The document outlines DNV GL's maritime specification review service for oil and chemical tankers, targeting shipowners in the design and contracting phases. It highlights the comprehensive assessment of specifications against existing and future regulations, cargo flexibility, and design feasibility based on industry experience. The service encompasses various technical disciplines including cargo handling and machinery systems, while noting exclusions such as electrical and navigation systems unless specified by clients.

1. SAFER, SMARTER, GREENER
Oil and chemical tankers
MARITIME
SPECIFICATION
REVIEW SERVICE
– SHIP OWNERS
©iStock

2. 02 MARITIME Oil & chemical tankers
The competence and knowledge required to review
technical specifications is based on experience. DNV GL
has long experience in reviewing specifications; with
our deep knowledge of both the operation and the
building of all kinds of ships, we are ideal for assisting
the owners. Further, as the vessel is intended to operate
over a long time span, verification of existing and future
rules and regulations has to be taken into account.

3. Oil & chemical tankers MARITIME 03

4. 04 MARITIME Oil & chemical tankers
OVERVIEW
Target clients
Shipowners in the design, pre-contract or contracting
phase for newbuildings.
Ship types
■■ Oil tankers (crude, oil products, asphalt, shuttle etc.)
■■ Chemical tankers
■■ Oil and chemical tankers
■■ Combination carriers carrying oil or chemicals
Purpose
■■ To review owners’ outline specifications.
■■ To review outline specifications or detailed techni-
cal specifications from shipyards or designers.
SCOPE
The scope of the service is to give an overall assess-
ment of the specifications with respect to:
■■ Class and statutory requirements in force
■■ Future known statutory, regional and IACS require-
ments
■■ Potential cargoes
■■ Relevant regional requirements (EU and USCG)
■■ Oil major requirements (OCIMF and ExxonMobil)
■■ Feasibility of design and specifications based on
experience from previous newbuilding project
execution and in-service experience
■■ New technology such as alternative fuels
■■ Equivalent level of safety for novel designs.
Class and statutory requirements in force
DNV GL rules, SOLAS, MARPOL, IBC code.
Future known statutory, regional and IACS
requirements
Requirements with known entry into force date or
requirements under consideration. Examples are
MARPOL Annex VI tier III NOx requirements, SOLAS
and IBC code amendments related to inert gas for
new tankers of 8000 dwt and above, and IACS har-
monized CSR.
Potential cargoes
Assessment of and recommendations related to ship
arrangements and specified equipment with respect
to chemical tanker cargo flexibility, for example
related to carriage of FAME and enhancing cargo
flexibility.
Relevant regional requirements (EU and USCG)
Assessment with respect to main regional require-
ments such as USCG VGP, VECS and ballast water
treatment issues, as well as future EU SOx and poten-
tial NOx requirements.
Oil major requirements (OCIMF & ExxonMobil)
Assessment with respect to main OCIMF SIRE VIQ
and ExxonMobil requirements and experienced
practices.
Feasibility of design and specifications based on
experience from previous newbuilding project
execution and in-service experience
Examples: comparison of capacities versus other
designs, recommendations related to cargo handling
efficiency (such as tank cleaning), cargo handling sys-
tem design, material selection, MGO operation etc.

5. Oil & chemical tankers MARITIME 05
©DNVGL/MagneA.Røe

6. 06 MARITIME Oil & chemical tankers
DISCIPLINES
Disciplines
The service covers an overall assessment of technical
issues covering the following main disciplines:
■■ Cargo handling and piping systems
■■ Hull structural issues
■■ Machinery systems
I.e. the review will not cover electrical systems, au-
tomation and control systems, nautical systems and
navigation, fire safety, life saving and load line unless
specifically requested by the client.

7. Oil & chemical tankers MARITIME 07
CONTACTS
Please contact your local DNV GL office or customer
service manager for further information and support.
©GettyImages

8. SAFER, SMARTER, GREENER
DNV GL AS
NO-1322 Høvik, Norway
Tel: +47 67 57 99 00
www.dnvgl.com
DNV GL
Driven by our purpose of safeguarding life, property and the environment, DNV GL enables organizations to advance
the safety and sustainability of their business. We provide classification and technical assurance along with software and
independent expert advisory services to the maritime, oil and gas, and energy industries. We also provide certification
services to customers across a wide range of industries.
Combining leading technical and operational expertise, risk methodology and in-depth industry knowledge, we empower
our customers’ decisions and actions with trust and confidence. We continuously invest in research and collaborative innovation
to provide customers and society with operational and technological foresight. With our origins stretching back to 1864, our
reach today is global. Operating in more than 100 countries, our 16,000 professionals are dedicated to helping customers
make the world safer, smarter and greener.
The trademarks DNV GL and the Horizon Graphic are the property of DNV GL AS. All rights reserved.
©DNV GL 06/2015 Design: Coor Media 1504-030 Print: Coor Media, volume 3000
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