Deltares Capability Statement Offshore Wind Energy

Offshore wind energy

Capability Statement

Offshore wind farms have recently become an appealing form of sustainable energy, encouraged by govern-
van internet)
Offshore wind energy related to global climate change. Pilot wind farms across Northern Europe have proven
ments worldwide and
to be successful and provided expert knowledge on the design and installation of turbines and wind farm
monitoring. Future generation wind farms face new challenges, such as deep-water foundations, installation
ergy in severe environments, and mitigating large-scale and long-term impacts on the environment.

Deltares’ hydraulic, geotechnical and ecological exper-
Offshore wind farms have recently become an appealing form of sustainable energy, encouraged
tise in marine environments supports offshore engi-
by governments worldwide and related to global climate change. Pilot wind farms across Northern
Europe have proven to be successful and provided operation and monitor-
neers in the development, safe expert knowledge on the design and
installation of turbines and wind farm monitoring. Future generation wind farms face new
ing of offshore wind farms. Our specialised consultancy
challenges, such as deep-water foundations, installation in severe environments, and mitigating
become large-scale and and integrated studies focus on:
an appealing long-term sustainable energy, encouraged
form of impacts on the environment.
ed to global climate change. Pilot wind farms across Northern
essful and provided • Operational and extreme metocean design conditions
Deltares’ hydraulic, geotechnical and on the design and marine environments supports
expert knowledge ecological expertise in
offshore engineers in the development, safe operation and monitoring of offshore wind farms. Our
• Modelling of wave forces and wave run-up
farm monitoring. Future generation wind farms face new
specialised consultancy and integrated studies focus on:
undations, installation• Scour prediction, scour protection and morphological
in severe environments, and mitigating
n the environment. changes
o Operational and extreme metocean design conditions
o
• Geotechnical studies for foundation design
Modelling of wave forces and wave run-up
and ecological Scour prediction, marine environments supports
o expertise in scour protection and morphological changes
• Cable trenching, burial and risk assessment
ent, safe operation and monitoringfor foundation designfarms. Our
o Geotechnical studies of offshore wind
• Spatial planning and environmental legislation and
o Cable trenching, burial and risk assessment
ed studies focus on:
o Spatial• Environmental impact assessments
planning and environmental legislation and
o Environmental impact assessments
• Geophysical surveys and interpretation of the
etocean designGeophysical surveys and interpretation of the sub-surface
conditions
o
nd wave run-up sub-surface
ection and morphological changes
undation design
risk assessment
nmental legislation and
ssments
nterpretation of the sub-surface

© GE Wind Energy

(van internet)

o wind speed at various levels, wind direction,
jack-ups and transfer of
challenge
o and
wave heights, wave periods, wave direction, requires personnel. These operations
o current velocity, current direction and
Metocean conditions
coordination of supply and
o water levels. for the design basis
Statistics
Metocean conditions
are all weather restricted.
Statistical analysis of
Environmental design conditions are needed as input Weather window analysis for marine installations
We support forvessels, installation
use ourfor the design of wind turbines and their foundations.
knowledge designenvironmental processes and
Statistics the on basis
expected weather windows is
Deltares provides all relevant parameters such as: therefore essential for the
The erection of an offshore
statistics to translate individual parameter data into joint
Environmental design conditions are needed as input for the

probabilities, • wind speed at various levels, wind direction, of of
jack-ups and and evaluations field
confidence intervals transfer
wind park is a logistical
design of wind turbines and their foundations. Deltares planning of marine
provides all relevant parameters such as: challenge and requires
measurements. • wave heights, wave periods, wave direction,
installations. Deltares is able
coordination of supply and
personnel. These operations
• current velocity, current direction and
o wind speed at various levels, wind direction, to support clients with simple
support vessels, installation
• water levels.
o wave heights, wave periods, wave direction,
and complex weather window analyses, valida
o
o
current velocity, current direction and
water levels.
operational forecasts and decision support sys
We use our knowledge on environmental processes and Statistical analysis of
what-if simulations.
Statisticalto translate analysis data into
statistics individual parameter
We use our knowledge on environmental processes and of
joint probabilities, confidence intervals and evaluations
expected weather windows is
therefore essential for the
statistics to translate individual parameter data into joint
Metocean conditions
of field measurements.
expected weather windows is WeatherWave forces andmarine installations and the ve
probabilities, confidence intervals and evaluations of field
measurements.
planning of
window analysis for
wave run-up
marine
installations. Deltares is able
The maximum wave run-up level
to support clients with simple
Statistics for the design basis
therefore essential asfor for the
Environmental design conditions are needed input the The erection of anvaluable input for the design of acc
provide offshore
and complex weather window analyses, validate and provide
operational forecasts and decision support systems based on
design of wind turbines and their foundations. Deltares Standard computations of wave forces at slen
wind park is a logistical
planning parametersof as:
provides all relevant such marine coordination and supply and from engineering software
challenge requires
piles are available
of
Wave forces and wave run-up
books and design codes and allow for the de
installations. Deltares is able support drag and inertia forces efficiently and wi
o wind speed at various levels, wind direction,
o wave heights, wave periods, wave direction,
vessels, installation
The maximum wave run-up level and the vertical pressure
provide valuable input for the design of access platforms.
o current velocity, current direction and accuracy. However, forces on more comp
Standard computations of wave forces at slender cylindrical
Extreme value analysis of significant wavewith wave rose and are all weather restricted.
to support clients heights, simple piles are available from engineering software programs, text
o water levels. especially large gravity base foundations, re
validation of predictions against measurements Statistical analysis of
books and design codes and allow for the determination of
personnel. These operations are all weather restricted.
expectedadvanced approach.
and use our knowledge on environmental processes and analyses, validate and of Groningen
We complex weather window weather windows is
provide
drag and inertia forces efficiently and with reasonable
Statistical analysis of expected weather windows is
therefore Together for thethe University
essential with
accuracy. However, forces on more complex structures,
statistics to translate individual parameter data into joint therefore essential for the planning of marine installa-
Extreme value analysis of significant wave heights, wave rose and
Extreme value analysis of significant wave heights, wave rose and vali- especially large gravity base foundations, require a more
operational forecasts andof decision supportmarine “ComFLOW”. ComFLOW c
validation of predictions against measurements
probabilities, confidence
measurements.
waves, evaluations
dation of predictions against measurements field planning Deltares is
of
Numerical modelling of intervals andcurrents and water installations. Deltares iscurrently developing the 3D on
systems based
tions. Deltares is able to support clients with simple and comp
advanced approach.
able
complex weather window analyses, validate and provide
dynamics program
Together with the University of Groningen and MARIN,
levels to support clients with simple
what-if simulations. models andwaves,levels and complex forecasts andand wave validate and provide g
Numerical modelling of waves, currents and water operational
impact forces decision support systems
Deltares is currently developing the 3D computational fluid
Deltares operates a number of regional currents of water tidal based on what-if simulations.
Numerical modelling of waves,
levels
weather window analyses, run-up for arbitrary
dynamics program “ComFLOW”. ComFLOW computes wave
Deltares operates a number of regional models of waves,
currents andDeltares operates a number ofdedicated local models are
water levels. These regional models of waves, tidal impact forcesforecasts and decision support systems and the impro
extreme wave conditions, is based on
operational and wave run-up for arbitrary geometries based on
extreme wave conditions, is and solves the Navier-Stokes equa
fluid method based on the improved volume of
set-up according currents and water levels. These dedicated local
tidal to project-specific needs. Accurate numerical
currents and water levels. These dedicated local models are Wave forces and wave run-up
fluid method and solves the Navier-Stokes equation.
set-up according to project-specific to project-specific needs.
models are set-up according needs. Accurate numerical The maximum wave run-up level and the vertical pres-
modelling is modelling is essential, especially for those areas that are not
essential, especially for those areas that are not
Accurate numerical modelling is essential, especially for
located nearlocated areasathat are not locatedthat have a complex
a measurement station, near a measurement
near measurement station, that have a complex
sure provide valuable input for the design of access
those platforms. Standard computations of wave forces at
bathymetry or where wave-current interaction plays an provide valuable input for the design of access platforms.
station, that have a complex bathymetry or where wave-
bathymetry important role. wave-current interaction plays an
or where
current interaction plays an important role.
important role.
slender cylindrical piles are available from engineering
software programs, text books and design codes and
piles are available from engineering software programs, text
books for the determination of drag and inertia forces ef-
allow and design codes and allow for the determination of
provide valuable input for the design of access platforms. ficiently and with reasonable accuracy. However, forces
drag and inertia forces efficiently and with reasonable
accuracy. complex structures, especially large gravity
on more However, forces on more complex structures,
Extreme value analysis of significant wave heights, wave rose and
validation of predictions against measurements
base foundations, require a more advanced approach.
especially large gravity base foundations, require a more
Together with the University of Groningen and MARIN,
advanced approach.
piles are available from engineering software programs, text ComFLOW is field,the University of at a 3D computational
Together flow currently developing the monopile and MARIN,
Deltares with water levels and run-up Groningen
fluid dynamics program “ComFLOW” . ComFLOW com-
Deltares is currently developing the 3D computational fluid
Numerical modelling of waves, currents and water
books and design codes and allow for the determination of
levels
putes wave impact forces and wave run-up for arbitrary
ComFLOW program “ComFLOW”. wave impact forces and wave
dynamics can be used to compute ComFLOW computes
geometries and extreme wave conditions, is based on
wave run-up for arbitrary run-up for arbitrary geometries and
impact forces and wave geometries and extreme wave
Deltares operates a number of regional models of waves, tidal conditions.ComFLOW flow fluid method and the vertical
extreme wave maximum wavebased on the and solves the of a mo
the improvedconditions, isfield, water levels and volume at
The volume of run-up level improved run-up
drag according to project-specificdedicated local models are
set-up
and inertia forces efficiently and with reasonable
currents and water levels. These
needs. Accurate numerical
pressure provide valuable input for the design of access
Navier-Stokes equation.
fluid method and solves the Navier-Stokes equation.
Computational grid of Continental Shelf Model and nested models platforms.
ComFLOW can be used to compute wave imp
accuracy. However, have a complex on more run-up for arbitrary structures,
forces
modelling is essential, especially for those areas that are not
located near a measurement station, that wave
complex geometries and
bathymetry or where wave-current interaction plays an
especially large gravity base foundations, maximum wave afor more
important role.
conditions. The
require run-upthe des
pressure provide valuable input
level a

advanced approach.
Computational grid of Continental Shelf Model and nested models platforms.
Computational grid of Continental Shelf Model and nested models

Togetherwindow analysisthe University of Groningen and MARIN,
Weather with for marine installations
The erection of an offshore wind park is a logistical
Deltares and requires coordination of supply and
challenge is currently developing the 3D computational fluid
2support vessels, installation jack-ups and transfer of
Deltares - Geo-engineering ComFLOW flow field, water levels and run-up atat a monopile
ComFLOW flow field, water levels and run-up a monopile

dynamics program “ComFLOW”. ComFLOW computes wave ComFLOW can be used to compute wave impact forces and

tests can be conducted at
ComFLOW can be used to compute wave impact forces PROBED provides the required armour and filter stone
and wave run-up for arbitrary geometries and extreme
erial leads to significant scour
wave conditions. The maximum wave run-up level and
foundations at the same time.
diameters for statically and dynamically stable protec-
tion under given hydraulic conditions. Accordingly, the
Scour and scour protection
the vertical pressure provide valuable input for the de-
current angles of 0º/180º (waves and c
stability of a certain rock class can be assessed. A library
e the foundation stability. An
sign of access platforms. of structure-dependent opposing) and 90º (waves perpendicular
velocity amplification factors is
available. The strength of PROBED is the possibility to
tests can be conducted at large scale
Scour prediction
scour and scour protection
Scour protection current and compare sensitivity computations. currents in line an
angles of 0º/180º (waves and
pectedprediction seabed material leads to significant scour and 90ºfoundations at the sameon current), mode
scour depth is required opposing) carry out
Local erosion of time.
Scour (waves perpendicular
Local erosion of seabed material leads to significant
d to which which can jeopardize the foundation stability. can be conducted at large and currentswith line an
holes, decidejeopardize the counter Physical modellingof 0º/180º (waves scale and in multipl
scour holes,
can
protection whether
scourfor the maximum expected foundation istests An current angles
Deltares has unique facilities in which scour can be in-
estimate scour depth foundations at the same time.
required
will be material leads to significantdecide decide vestigated: With test sections of more than 100m2 and current),multipl
required. structuraltimeand to whetherwave-current angles of 0º/180º (waves and currents on with mode
for the structural for the
depth is required
The designscour of opposing) and conducted atperpendicular and
stability. An estimate for the maximum expected scour
seabed
design and to rate counter be
tests can
90º (waves
large scale
n jeopardize the foundation stability. An
n
whether counter measures (scour protection) will be re- in line and opposing) and 90º (waves perpendicular on
measures (scour protection) will be required. The time rate of at the same time.
erest material leads scouring isis required interest current), model tests can be conducted at large scale
maximumin the scour depth of particular
seabed expected installationscour
to significant phase foundations
scouring is of to rate of whether in the installation phase
quired. The time
particular interest counter
l design and the decide
in the installation phase because it determines the time and
e atatwhich afoundationis stability. Ancritical scour with multiple foundations at the same time.
n jeopardize
because it will be required. time reached andadepth
critical scour
protection) determines the The at which scour
which a critical scour depth
maximum expected scour depth time rate of is required
depth
protection needs to be applied.
articular and scour protection needs to be applied.
is reached and
n design interest bethe installation counter
l needs to in applied. phase
to decide whether
mines Deltareswill be required. The scourrate of
protection) has carried out numeroustime depth
the time at which a critical research projects,
Deltares has needs toout applied. research projects, which
which have carried inbe numerous of scour predic-
our protection resulted the installation phase
the development
articular interest in
havetion formulae for the equilibrium scour depth and the
resulted in the development of scour prediction formulae
mines time rate ofat which a critical scour depth
the time scour development under offshore condi-
erous research projects, which
for the numerous research projects, which
ied out equilibrium scour depth and the time rate of scour
tions. We have developed sophisticated modelling tech-
our protection needs to be applied.
he developmentunder offshore that allow insight into
development digital video prediction formulae
niques with of scour cameras
ent of scour prediction formulae
processes during storm conditions. Extensive knowledge
conditions. We have
m scour numerous research projects, scour
ried out depth and the time rate of which
and experience is not only available for monopiles but
e and the time rate of scour
pth
derdevelopment ofsophisticated
developed
he offshore scour prediction formulae
also for gravity base foundations, jackets and jack-ups.
We scour have techniques time rate of scour
m
modelling
depth and the
with
e
n sophisticated scour protection design
Conceptual
digital video cameras that Scheldt basin at Deltares. The combination o
der offshore
niques insight into processes
e
We
allow with
have essential for offshore scour modelling.
during
ameras that storm conditions.
sophisticated Scheldt basin at Deltares. The combination of waves and current i
d Extensive knowledge and experience is not only available for
o processes
niques with essential for offshore Scour protection usually consists of gra
scour modelling.
monopiles but also for gravity base foundations, jackets and
conditions. and armour. However, es- Deltares has also
hameras that
jack-ups.experience is not only available for
dge and
Scheldt basin at Deltares. The combination of combination of waves and current
Scheldt basin at Deltares. The waves and current is
o processes Scour offshore scour modelling. modelling. so we can advise our clie
on alternatives
sential for protection usually consists of granular material: filte
essential for offshore scour
t
so for gravity base foundations, jackets and
conditions. of scour protection options: gravel bags,
and armour. However, Deltares has also built up knowledg
Scheldt basin at Deltares. The
e Conceptual scour protection design for
dge and experience is not only available
Scour protection usually consists of granular material:
Scour protection we can advise of and frond mats. rang
mattresses, collars granular the full
on alternatives so usually consistsour clients on material: filte
filter and armour. However, Deltares has also built up
s For the conceptual scour protection design, Deltares has knowledge on alternatives so we can advise our clients scour mode
so for gravity base foundations, jackets and
. and armour. essential for offshore
of scour protection options: gravel bags, rubber mats, bloc
However, Deltares has also built up knowledg
developed the engineering software program “PROBED”. collars and frond mats.
ur protection design on the full range of scour protection options: gravel bags,
. mattresses,
on alternatives so we can advise our clients on the full rang
For the conceptual scour protection design, Deltares has rubber mats, block mattresses, collars and frond mats.
ual scour is a user-friendly and flexible program for calculating
PROBED protection design, Deltares has
l developed the engineering software program “PROBED” . of scour protection options: gravel bags, rubber mats, bloc
erience is not only available for
engineering softwarepipe covers “PROBED”. a combination of
ur protection design program subjected to
bed protections and
PROBED is a user-friendly and flexible program for cal- Scour protection usually con
mattresses, collars and frond mats.
t base foundations, jackets and
ual scourand flexible program for calculating program is the
r-friendly and (non-breaking) Deltares This
currents protection design, waves. has
culating bed protections and pipe covers subjected to a
combination of currents and (non-breaking) waves. This
engineering to earlier programs “PROBED”.
successor software program like BPP (Bottom Protection
nd pipe covers subjected to a combination of and armour. However, Delta
f program is the successor to earlier programs like BPP
on-breaking)and Pipecover, both developed by Deltares
Program)
er-friendly and waves. program for calculating
flexible This program is the
(Bottom Protection Program) and Pipecover, both devel-
nd pipe covers like BPP (Bottom Protection
lier programs subjected to aPROBED includes the latest and
(formerly Delft Hydraulics). combination of
oped by Deltares (formerly Delft Hydraulics). PROBED
on alternatives so we can ad
eon-breaking) the latest and validatedby Deltares and
Pipecover,design formulae and itdesign formulae better insight in
includes
validated both developed gives the user
waves. This program is the
it gives the user better insight in the sensitivity to the of scour protection options:
,
ydraulics). PROBEDBPP (Bottom latest and
the programs like includes the Protection
lier sensitivity to the input parameters.
n designinput parameters.
ormulae and both developedbetter insight in
Pipecover, it gives the user by Deltares mattresses, collars and frond
e
rotection design, Deltares has PROBED also simulates
he input parameters. includes the latest and simulates one-
ydraulics). PROBED PROBED also
one-dimensional wind-
dimensional
ormulae and it gives the user better insight in and wind-generated
generated waves
software program “PROBED”.
PROBED also simulatesand wave
he input parameters. waves one-
computes the computes the wave
dimensional height distribution in
wind-generated
height distribution in shallow
,
d flexible program for calculating
waves andalso simulates wave wave
computes thewaterwave transformation
water and and
shallow
Investigation of alternative scour protection: rub
PROBED one-
transformation from off-
d subjected to a combination of
rs height distributionfrom to nearshore. nearshore.
dimensional in offshore to
shallow
wind-generated
shore Evaluation of field data
Investigation of alternative scour protection: rubber mat with chain
water and wave transformation
waves and computes the wave Investigation of alternative scour protection: Deltares - Geo-engineering 3
rubber mat with chain
Combining knowledge from field resea
e waves. This program is the
from offshore to nearshore.
height distribution in shallow Evaluation of field data experiments plays a key role in our
Investigation of alternative scour protection: rubber mat with chain

Evaluation of field data using numerical modelling techniques, cross correlation
Combining knowledge from field research and labora- and spectral analyses. Deltares has access to historic
tory experiments plays a key role in our research proj- databases of the North Sea and international waters.
ects. Together with industry we evaluate bathymetric Deltares offers this expertise in tailor-made studies
surveys and assess expected scour development and combining foundations design (expected fixation levels
the performance of the scour protection. and ranges), scour protection stability under the influ-
ence of migrating sand banks and bed level changes
Data from the Dutch demonstration offshore wind parks along the cable route.
have provided unique insight into the long-term stabil-
ity of a dynamically stable scour protection and the de-
velopment of scour at the edge of the scour protection.

2009
2009 2009

Analysis ofAnalysisprotection protection performance from fieldfield data, Egmond correlation result of two bathymetric grids, providing the migra-
Analysis of scour protection performance data, Egmond Egmond
scour of scour performance from field from data,
Analysis of scour protection performance from field data, Egmond Cross
windpark
windpark
windpark windpark Cross Cross Cross correlation resultbathymetricbathymetric grids, p
correlation result result of bathymetrictwo grids, providing the
correlation of two two grids, providing the
tion vector of sand waves near the island Texel.
of
migration vector vector of sand near near the Texel.
migration of sand waveswavesthe islandisland Texel.
migration vector of sand waves near the island Texel.
Morphodynamics Cable safety
Morphodynamics
Short-term and long-term morphological changes
Morphodynamics The safety of electricity cables between wind turbines,
Morphodynamics
are important parameters in the design, stability and
Cable safety
Cable safety and the shore connection is of ma-
transformer station
Cable safety
Short-termenergy yield of wind turbines and allow for risk assess-
Short-term and long-term morphological changes are jor importance for the transport of energy. Cables must
and long-term morphological changes are
Short-termparameters in the design, stability and energy yield are safety safety of electricity cables between wind turbines,
and long-term morphological changes The The of electricity cables between wind turbines,
ments of electricity cables. For example, the migration
important be buried to a safe depth and must remain at this safe
important parameters in the design, stability and energy yield transformer station and electricity connection is of major
the shore cables
importantturbines and allow assessments of electricity transformer stationsafety the shore connection is between win
The and of
of wind parameters in the design, stability andelectricity yield
for risk assessments of energy
of mobile sand waves may cause seabed elevation dif- depth during the entire lifetime of the windpark. But major
of wind turbines and allow for risk of
importance for the transport ofand theCables must be buried
transformer station energy. shore connection
ofcables. turbinesmigrationmigration ofsand waves mayof electricity
ferences up to several meters. risk mobile sand waves may importance for the transport of energy. Cables must be buried
wind For example, the of mobile assessments
cables. For example, the and allow for what are safe burial depths? How deep do ship anchors
cause seabed elevation differences up to several meters. to a safe depth and must remain at this safe depth during the
and falling objects penetrate into the seabed? Is the
to a entire importancethe the transport of depth during burial
for
cause seabed elevation differences migration of mobile sand waves may safe depth and must remain at thisBut what are safe the
cables. For example, the up to several meters. energy. Cables mu
lifetime of windpark. safe
equipment able to reach for the given soil properties?
to of safe depth and mustwhat areatsafe safe dept
a the windpark. But remain this burial
cause seabed elevation differences up to several meters. entire depths? How deep do ship anchors and falling objects
lifetime
Do long-term changes of the seabed affect the burial
penetrate into lifetime of Is thewindpark. able objectsare
entire do ship the equipment But what
depths? How deepthe seabed? anchors and falling to reach for
depth and thereby also the safety? Deltares addresses seabed
penetrate into the seabed? Is deep do shipable to of theand fall
the given soil properties?the equipment anchors
depths? How Do long-term changes reach for
all given soilpenetratedepth the seabed?alsotheofsafety? Deltares
the these questions in into and thereby Is the equipment able
affect the burial tailor-made individual studies or
properties? Do long-term changes the seabed
in an the burial depth soil properties? Do long-termDeltares of
integrated approach.
affect addresses given and therebyin tailor-made individual studies
the all these questions also the safety? changes
addresses allaffect the burial in tailor-made individual studies
or in an these questions depth and thereby also the safet
integrated approach.
or in an integrated approach. include:
Our expertise and services
addresses all these questions in tailor-made indivi
• Assessment and testing of performance of trenching
Our expertise and services include:
or in an integrated approach.
equipment
Our expertise and services include: of performance of trenching
Assessment and testing
• Penetration behaviour of ship anchors and fishing
equipment
Assessment and testing of performance of trenching
Our expertise and services include:
gear on seabed behaviour of ship anchors and fishing gear on
equipmentPenetration
seabedAssessment and testing of performance o
• Fall behaviour and seabed impact of dropped objects
Penetration behaviour of ship anchors and fishing gear on
Multibeam echo sounding data of of sand wave field field 50 km offshore
Multibeam echo sounding data a a sand wave 50 km offshore equipment
Egmond aan Zee, displaying straight sand waves and and superimposed
aan Zee, displaying straight sand waves seabed behaviour and seabed impact of dropped objects
Fall
Multibeam echo sounding data of a sand wave field 50 kmsuperimposed
Egmond offshore Penetration behaviour of ship anchors and fish
megaripples. Fall behaviour and seabed impact of dropped objects
megaripples.
Egmond aan Zee, displaying straight sand waves and superimposed Environmental seabed legislation & planning
Multibeam echo sounding data of a sand wave field 50 km offshore European Community and/or European Union countries
megaripples.
Regional bathymetric maps provide insight into the spatial
Environmental legislationimpact of dropped
Fall behaviour and seabed & planning
Regional bathymetric maps provide insight into the
Egmond aan Zee, displaying straight sand waves and superimposed work under the EU regulatory demands such as the Bird
variation of seabed dynamics, which depends on local Environmental legislation & planning
spatial variation of seabed dynamics, which depends on Directive (79/409/EEC), the Habitats Directive (92/43/ work
Regionalmegaripples. maps provide insight into the spatial
bathymetric European Community and/or European Union countries
conditions. The quantification of dimensions, migration rates
variation and seabed dynamics, which depends on local mi-
local conditions. The quantification of dimensions,
of the evolution of individual bed forms, such as sand EEC), the EIA Directive (85/337/EEC, on the assessment
under the EU regulatory demands such as the Bird Directive
gration rates and the evolution of individual bed forms, Environmental legislation & pl
of the effects of certain public and private projects on
conditions. The quantification of maps provide insight rates the spatial (79/409/EEC), the Habitats Directive (92/43/EEC), work EIA
Regionalsand banks, and tidal channels is determined from European Community and/or European Union countries the
bathymetric dimensions, migration into
waves,
such as sand waves, sand banks, and tidal channels is
evolution of individual bed forms, such depends on
of governing hydrodynamic and sand the environment) and the OSPAR Convention (which is
and the variation into seabed dynamics, which asmorphological local Directiveregulatory demands such as the Birdthe effects of
under the EU (85/337/EEC, on the assessment of Directive
insight
determinedand quantification governing hydrodynamic rates current European private projects on theEuropean Union the
from insight into of dimensions, from
waves, sand banks,and field measurements, using numerical modelling the certain legal and Community and/or environment) and cou
conditions. The tidal channels is determined migration (79/409/EEC), theinstrument guiding international coop-
public Habitats Directive (92/43/EEC), the EIA
processes
andgoverning hydrodynamic and field measurements,
into morphological processes and morphological
2techniques, cross correlation and bed analyses. Deltares eration
insight and the -evolution of individualspectralforms, such as sand OSPAR protection the assessment of legal of the
Deltares Geo-engineering Directive on theConvention (which marine currentthe effects of B
(85/337/EEC, EU of the is the environmentinstrument
under the on regulatory demands such as
and field measurements, tidal channels is determined certain public(79/409/EEC), the on the environment) and the
and private projects Habitats Directive (92/43/EEC
waves, sand banks, and using numerical North Sea and from guiding international cooperation on the protection of the
processeshas access to historic databases of the modelling
OSPAR Convention (which is the current legal instrument

the North-East Atlantic). For this reason, Environmental Ecological impacts & risks
Baseline Surveys and Habitat Assessments are car- In many countries, an Environmental Impact Assess-
ried out in advance of any significant marine development (EIA) is a statutory requirement for projects that
ment. Most research or consulting operations relate to involve nearshore and offshore construction works.
institute, Deltares can assist quality analysis within of the The purpose of the EIA is to interpret both long-term
detailed sediment and water in the interpretation legal the EIA is to interpret both long-term imp
a designated area, looking at physio-chemical and
requirements as they apply to a particular offshore energy impacts of proposed works and possible short-term
works and possible short-term impacts durin
biological factors as stated in the OSPAR guidelines. impacts during the construction phase in a manner
installation. phase in a manner consistent with formal EIA
As an independent institute, Deltares can assist in the consistent with formal EIA procedures, and recommend
interpretation of the legal requirements as they apply
recommend appropriate mitigation measu
appropriate mitigation measures that can be taken to
Deltares has assisted in the installation. of the European any adverse impact.
to a particular offshore energy development reduce taken to reduce any adverse impact.
Marine Strategy Framework Directive and its implementation.
Deltares has assisted in the development of the Europe-
Our strength lies in practical experience in conducting Deltares has ample experience in EIAs associated with
Deltares has ample experience in EIAs asso
an Marine Strategy Framework Directive and its imple- thorough
environmental assessments combined with a large-scale interventions in the aquatic and marine and ma
scale interventions in the aquatic
understanding of sector-specific decision-making in
mentation. Our strength lies in practical experience processes.
environment such as as reclamation schemes,farms, farms
such reclamation schemes, wind wind
conducting environmental assessments combined with siting of power plants, ports and harbours, pipeline lay-
Deltares has extensive experience in the field of plants, ports and harbours, pipeline lay
a thorough understanding of sector-specific decision- ing and coastal defence works. Services include:
environmental management, including EIAs, SEAs, and the
making processes. Deltares has extensive experience
defence works. Services include:
development environmental management, including
in the field of and implementation of • Communicating with regulatory authorities, stake authorit
Environmental Communicating with regulatory
EIAs, SEAs, and the development and implementation of
Management Plans (EMPs). holders, and the community;
and the community;
Environmental Management Plans (EMPs). • Screening and scoping study;and scoping study;
Screening
At Deltares we see Marine Spatial Planning as a dynamic, • Cause-effect chain analysis;
Cause-effect chain analysis;
At Deltares we see Marine Spatial Planning as a dynam- • Full Environmental Impact Assessment;
multidisciplinary and iterative process to promote sustainable Full Environmental Impact Assessment;
ic, multidisciplinary and iterative process to promote • Ecological, morphological and hydro-dynamical mod
development and management of marine areas. The MSP Ecological, morphological and hydro-dy
sustainable development and management of marine elling studies in support of EIAs;
process covers the full cycle of information collection,
areas. The MSP process covers the full cycle of informa- studies in support of EIAs;
• Analysis with Water Quality model Delft3D-WAQ and
planning, decision-making, management and monitoring of
tion collection, planning, decision-making, manage- Analysis with Water Quality model D
phytoplankton model BLOOM;
ment and monitoring of implementation.
implementation. • Habitat and biotope mapping, assessing quality and
phytoplankton model BLOOM;
Deltares consultants have extensive experience in man-
Deltares consultants have extensive experience in managing quantity of available habitat using the Habitat Model asses
Habitat and biotope mapping,
aging public consultation processes and incorporating
public consultation processes and incorporating environmental (including GIS); quantity of available habitat using th
environmental assessment into the broader planning • Follow-up analysis of an EIA, such as in an Appropri
assessment into the broader planning and decision-making (including GIS);
and decision-making process. ate Assessment, testing EIA results against the legal
process. Follow-up analysis of an EIA, such as
framework as described in the Habitat Directive;
• Developing and implementing monitoring and en results a
Assessment, testing EIA
vironmental management plans described in for the
framework as and systems the Habitat D
construction, operation, and decommissioning stages
Developing and implementing
of the project; environmental management plans and
• Definition of disposal alternatives, development of
construction, operation, and decommis
mitigating measures; and
the project;
• Design of monitoring techniques, such as remote
Definition of disposal alternatives,
sensing systems.
mitigating measures; and
Tools: Design of monitoring techniques, such a
• Habitat Model (including GIS functionality): docu
systems.
ments the quality and quantity of available habitat
for selected wildlife species, biotopes, ecotopes and
Tools:
user functions (e.g. recreation); A habitat evaluation
Habitat Model (including GIS function
procedure may be used in planning activities, Envi
the quality and quantity of available ha
ronmental Impact Assessments, habitat assessments
wildlife species, biotopes, ecotopes an
(including both baseline and future conditions), sen
sitivity mapping, (e.g. recreation); and compensa
trade-off analyses A habitat evaluation p
tion analyses; used in planning activities, Enviro
• Delft3D-WAQ: Water quality model for hydrodynamic
Assessments, habitat assessments
transport, erosion, resuspension, sedimentation and
baseline and future conditions), sen
chemical release; this model includes descriptions of
trade-off analyses and compensation an
dissolved oxygen, adsorption-desorption of contami
Delft3D-WAQ: Water quality model f
nants; release of nutrients;
transport, erosion, resuspension, se
• BLOOM: mathematical model simulating the biomass
and composition of phytoplankton and macro algae include
chemical release; this model
in relation to the amount of nutrients, the under wa
dissolved oxygen, adsorption-desorption
ter light climate and grazing.nutrients;
release of
BLOOM: mathematical model simulating
Risk map for crude oil spill, Dutch continental shelf
Risk map for crude oil spill, Dutch continental shelf composition of phytoplankton and macr
to the amount of nutrients, the under w

ments are crucial in various stages of project
Maritime safety and environmental awareness in con- S h ip p in g H y d r o d y n a m ic
d a t ab a se d a ta b a s e
nection with increasing ship traffic, offshore windpark
ment: site selection, permitting and societal
developments and recent ship accidents have triggered
nce, safety concept for operation and evaluation
assessments development of new assessment tools for marine
operation. the are crucial in various stages of project S p i ll h i p p i n g
S
st o c h a st i c
w in d
H y d r o d y n a m ic

development: site selection, permitting andstages of project
assessments are crucial in various r i s kd a t a b a se
environmental risks. Risk assessments are crucial in
d a ta b a s e
societal S h ip p in g
d a t ab a se
H y d r o d y n a m ic
d a ta b a s e
development: site project development: evaluation societal
various stages of selection, permitting and
acceptance, safety concept for operation and site selection, N a t u ra l r es o u r c e s
d a t a b a se
acceptance, and societal acceptance, safety concept for
permitting safety concept for operation and evaluation
during operation. S t o c h a s t ic p illy
S a ll st o c h a st i c
w in d
d r iv e n s p i llr ies ff e c t
k
during operation. evaluation during operation.
operation and m o d e llin g S p i ll
ris k
st o c h a st i c
w in d R e co v e r y
N a t u ra l r es o u r c e s
S t o c h a s t ic a lly d a t a b a se
I m p o rt a n c e
O il/ c h ivmni c a i ll e ff e c t
d r e e sp l V -m a p s N a t u ra l r es o u r c e s
p r e s e n c e e llin g
m od S t o c h a s t ic(vllyln e r a b ili t y )
a u d a t a b a se
R e co v e r y
p r o b a b il it y d r iv e n s p i ll e ff e c t E f fe c t s
m o d e llin g R e co v e r y
I m p o rt a n c e
O il/ c h e m i c a l V -m a p s
p re s en ce (v u ln e r a b ili t y )
p r o b a b il it y I m p o rt a n c e
MOail/in e m i c a l
r che V - m a p s f fe c t s
E

e n v ir o n m s e ntc el
p re en a (v u ln e r a b ili t y )
p r o b a b il it y E f fe c t s
r i sk
M a r in e
e n v ir o n m e n t a l
r i sk
M a r in e
e n v ir o n m e n t a l
r i sk

D e s i g n a t io n o f
M E R H A ’s
M E R H A ’s

Diagram of approach used for the DutchContinental Shelf
M E RContinental Shelf
Diagram of approach used for the Dutch
H A ’s
Diagram of approach used for the Dutch Continental Shelf

Diagram of approach used for the Dutch Continental Shelf

Hydrodynamic & morphological impacts
Hydrodynamic &&morphological
Hydrodynamic morphological
impacts environmental impact assessments,
As part of the
impacts Hydrodynamic & morphological
nearshore windparks need to investigate whether the
impacts
piles and foundations affect hydrodynamic conditions
As part of the environmental impact assessments, nearshore
and the seabed morphology in the vicinity of the wind-
As part of the environmental impactwhether the piles and
windparks need to investigate assessments, nearshore
park area. Deltares provides desk studies and numeri-
windparks needpart of investigate conditions and the piles and
As
to the environmental impact assessments, nea
foundations affect hydrodynamic whether the seabed
cal modelling studies to assessinvestigate whether as
windparks need to various effects such the piles
foundations affect hydrodynamicthe windpark and the seabed
morphology in the vicinity of conditions area. Deltares
structure-induced turbulences, turbulence damping, and the s
foundations affect hydrodynamic conditions
morphology in thestudies in thenumerical of the windpark area. D
provides desk vicinity of the windpark area. Deltares
wave energy damping and re-distribution of bed mate- to
morphology
and
vicinity
modelling studies
assess various local scour holes. These impact assess-
rial eroded in effects such as structure-induced turbulences,
provides desk studies andstudies and numerical modelling stud
provides desk numerical modelling studies to
turbulence damping, wave energy damping and re-distribution
assessmentsmaterial eroded inas structure-inducedwithimpact
various effects such effects suchconnection turbulences,
gain increasing attention in
bed assess various the scouras structure-induced
holes. These
the
ofupscaling of projects and localinstallation of larger foun- turbul
turbulence damping, wave energy damping and re-distribution
turbulence damping, wave energy damping and re-distr
assessments gain increasing attention in connection with the
dations (gravity based foundations) and in connection
Oil spill probability map, Dutch Continental Shelf of bedwith possible changes in the flow fields and associated These
upscaling of projects and the installation holes. These impact
material bed material local scour of larger foundations
of eroded in eroded in local scour holes.
Oil spill probability map, Dutch Continental Shelf assessmentsbased foundations) attention andconnection with thew
(gravity gain increasing and in connection with connection
assessments gain increasing attention in possible
changes in e.g. coastal morphology in water quality.
Oil spill probability map, Dutch Continental Shelf
robabilityIn cooperation with theShelf changes in the flowoffields andand the installation of larger found
upscaling projects associated changes in e.g.
map, Dutch Continental research institutes MARIN and upscaling of projects and the installation of larger foundations
In cooperation with the research institutes MARIN and
ALTERRA, Deltares offers such an integrated marine coastal morphology and water quality. and in connection with po
(gravity based foundations)
(gravity based foundations) flow fields and associated possible
changes in the
and in connection with changes
environmental risk assessments. The system institutes MARIN and
In ALTERRA, Deltares offers such an integrated marine
cooperation with the research comprises the
peration with ALTERRA, Deltares offers MARINanand
the research institutes such
key components: probability of events, exposure and marine integrated changes in the flowmorphology and water quality.
environmental risk assessments. The system comprises coastal fields and associated changes in e.g.
RA, Deltares environmental risk assessments. The system comprises the morphology and water quality.
offers such an integrated marine
vulnerability.the key components: probability of events, exposure
coastal
mental risk assessments. The system comprises the exposure and
and vulnerability.
key components: probability of events,
vulnerability.
A detailed numerical model (SAMSON) has been developed
mponents: probability of events, exposure and
A detailed numerical model (SAMSON) has been devel-
bility. to compute traffic statistics, frequency of collision, type,
volume A oped to compute traffic statistics, frequency of colli-
and geographical position of spills.
detailed numerical model (SAMSON) has been developed
to sion, type, volumestatistics, frequency of collision, type,
compute traffic and geographical position of spills.
ed numerical modeland fate of an oil patch by currents and waves is
(SAMSON) has been developed
The transport and geographical position of spills.
volume
pute traffic statistics, frequency of collision, type,
modelled The transport and fate of an oil patch by currents and
by using the inhouse developed program Delft-3D.
waves is modelled by using the inhouse developed pro-
and geographical position of spills. of an oil patch by currents and waves is
This resultstransport and fate
The in time-dependent probability maps for the
presence gram Delft-3D. This results in time-dependent probabil-
modelled by usingis combined developed ecological Delft-3D.
of oil, which the inhouse with an program
ity maps for the presence of oil, which is combined with
vulnerability map. patch by currents and waves is maps for the
of an oil The vulnerability map takes into account the
nsport and fate This results in time-dependent probability
sensitivity an ecological vulnerability map. The vulnerability map
of areas to certain substances and expected
d by using the inhouse of oil, which is combined with an ecological
presence developed program Delft-3D.
recovery. takes into account the sensitivity of areas to certain the
sults in time-dependentmap. The vulnerability map takes into account
vulnerability probability maps for the
substances and expected recovery.
sensitivity of areas to certain substances and expected
e of oil, which is combined three key factors (probability,
The combination of these with an ecological
recovery.
exposure, The combination of these three key factors (probability,
bility map. The vulnerability map one integrated approach provides
vulnerability) into takes into account the
a unique exposure, vulnerability) into one integrated approach
tool for the assessment of marine environmental
ty of areas The certain substances and expected
to combination of these three key factors (probability,
risks. provides a unique tool for the assessment of marine
y. exposure, vulnerability) into one integrated approach provides Hydrodynamic impact modelling for Hong Kong windpark
environmental risks. Hydrodynamic impact modelling for Hong Kong windpark
a unique tool for the assessment of marine environmental
mbination of risks. three key factors (probability,
these Hydrodynamic impact modelling for Hong Kong windpark
e, vulnerability) into one integrated approach provides

About Deltares Core expertise Deltares
Deltares is a Dutch independent research institute for Deltares offers its expertise on a wide range of water,
water, soil and subsurface issues. We work on innova- soil and subsurface related issues:
tive solutions that make life in deltas, coastal areas and
river basins safe, clean and sustainable. We conduct • Climate change
research and provide specialist advisory services for • Hydraulic engineering
government authorities and the corporate sector in the • Intake and outfall systems
Netherlands and globally. The essence of our work is • Integrated water resources management
the development, application and sharing of knowledge. • Industrial systems
We develop knowledge in partnerships with universities, • Geo- and soil engineering
other knowledge institutions and the business sector, • Operational warning and management systems
not only in government research programs but also in • Strategic studies
contract research. Deltares has more than 800 employ- • Water and soil quality
ees, and we are based in Delft and Utrecht. • Flood risk analysis and flood risk management
• Innovation management
• Integrated Coastal Zone Management
Delta technology • Levees, Dikes and Water defences
Economic activity, rising populations, falling land • Offshore
levels and the impact of climate change are generating • Spatial planning and ecology
increasing pressure on habitable space in deltas, river • Urban Land and Water Management
basins and coastal areas throughout the world. Deltares
has the knowledge and the resources needed to tackle
water and subsurface issues in a new, integrated way. Offshore products and services
Our knowledge areas comprise:
When water, soil and the subsurface are critical factors,
the debate will be about more than just technologi- • Metocean conditions & large-scale hydrodynamics
cal issues. For example, we take spatial planning into • Wave-structure interaction
account, together with the range of policy agendas and • Scour and morphology
interests, and legal and economic processes. Nature • Handling of solids
also plays an important role. So issues must be ap- • Marine geotechnics
proached from various angles. Deltares applies the • Geohazards
relevant knowledge in integrated ways. Sophisticated • Environmental impacts
combinations of measures result in more sustainable, • Transients in pipeline systems
liveable, and often more economic solutions. We call • Geophysical surveys
this integrated approach 'delta technology'.
In addition to offshore wind energy we serve clients in a
Our goal is the sustainable shaping of the living envi- variety of markets:
ronment, using high-grade technological solutions that
have the support of society in general. • Pipelines and cables
• Wave and tidal energy
• Oil & gas exploration and production
Knowledge and innovation • LNG transport and storage
The mission of Deltares is to develop, acquire, apply • Dredging and mining
and disseminate integral, multidisciplinary knowledge • Marine safety and remediation
and knowledge products related to living and working
in delta (coastal, estuarine, and riverine) areas, on an
internationally leading level. With this, Deltares sup-
ports public authorities, private parties and society in
their operations and ambitions, related to sustainable
development of delta areas: Enabling Delta Life.

Deltares will develop the roles into a balanced mix,
enabling a response optimally attuned to different re-
quirements of different stakeholders at different times.
The roles in combination provide essential added value
to our stakeholders, and are the pillars in defining stra-
tegic targets and operational plans. The roles mutually
reinforce each other, and together they cover all stages
of the innovation cycle: from developing and acquiring
new scientific knowledge to valorisation and validation
of new knowledge and models in real world projects.

P.O. Box 177
2600 MH Delft, The Netherlands
info@deltares.nl
www.deltares.nl

Deltares Capability Statement Offshore Wind Energy

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