The business case for battery hybrid harbor tugs is outstanding. How do new technologies, reduced cost of existing hardware, and big data come together to create a new operating model for tug operators? Presentation of business case study for 75T BP hybrid tug by Kevin Humphreys at the Tug & Barges Conference & Expo, Philadelphia, PA, May 10-11, 2018.

1. © Wärtsilä© Wärtsilä
WÄRTSILÄ
SMART MARINE
ECOSYSTEM: HYBRID TUG
ECONOMICS
14.5.2018 [Presentation name / Author]1
Kevin Humphreys
Segment Sales General Manager
Merchant and Gas Carriers
Wartsila North America
Mobile +1 757 478 8117
kevin.humphreys@wartsila.com
MARINE LOG TUGS & BARGES
CONFERENCE & EXPO
PHILADELPHIA, PA
MAY 10, 2018

2. © Wärtsilä 14 May 2018 A SUSTAINABLE MODEL FOR FUTURE SHIPPING2
WÄRTSILÄ’S PURPOSE
WÄRTSILÄ’S PURPOSE IS ENABLNING
SUSTAINABLE SOCIETIES WITH SMART
TECHNOLOGY

3. © Wärtsilä 14 May 2018 A SUSTAINABLE MODEL FOR FUTURE SHIPPING3
CONNECTING THE DOTS IN THE SMART MARINE ECOSYSTEM
Our joint vision at Wärtsilä is to lead the industry
transformation towards a Smart Marine Ecosystem

4. © Wärtsilä
LET’S MAKE A DIFFERENCE – TOGETHER
Ecosystem
thinking
Autonomous robots
Cybersecurity
Internet
of things
System
integration
Simulation
Big data
Augmented
reality
Cloud computing
Additive
manufacturing
Artificial
intelligence
Block chain
Predictive
analytics

5. Eniram
SKYLIGHT 3.0
Fleetwide performance benchmarking
and insight as a digital service

6. © Wärtsilä 14 May 2018 A SUSTAINABLE MODEL FOR FUTURE SHIPPING6
TRANSAS ACQUSITION

7. © Wärtsilä
WHAT LIES IN THE FUTURE OF THE MARINE INDUSTRY?
Unprecedented convergence
of rapidly evolving technologies will enable new
business models and disrupt existing ones

8. © Wärtsilä
RESHAPING THE INDUSTRY
Why should any of us
abandon a successful, well
understood business model?
SALES
TIME
PRODUCT
AS-A-SERVICE
TODAY

9. © Wärtsilä
DISRUPT OR BE DISRUPTED
Maturity of existing
technology
Big data analytics improved
capability
Low cost of sensors and
connectivity
Advanced automation
SALES
TIME
PRODUCT
AS-A-SERVICE
TODAY

10. © Wärtsilä
Container: 25% of global container fleet capacity is
wasted, excess time spent at anchorage and berth
7% of global
fleet idle
81% fill rate
per vessel
Container ships spend 6% of their time –
or 22 days a year , waiting at anchorage
for berthing
Berthing time can be reduced by 30% through
more efficient crane operations
of total fleet capacity wasted due to idle fleet,
low fill rates25%
From the cargo owners’ perspective, sea voyage is small part of the
shipping cost…with land-side costs being a major burden Container ships spend 25% of their time at berth.
Reducing this allows ships to sail slower, save fuel
from last mile transport,
warehousing and customs
from loading
and unloading
from ocean
voyage
55% 10% 35%
10

11. © Wärtsilä
FOUR FORCES HAVE ALREADY STARTED RESHAPING THE MARITIME SECTOR
Big data
analytics
Intelligent
vessels
Smart
ports
Shared
capacity

12. © Wärtsilä
INTELLIGENT VESSELS: IT IS A JOURNEY THAT HAS THE CUSTOMER’S BUSINESS AT THE CENTER
SYSTEM
INTEGRATION
SIMULATION
AUGMENTED
REALITY
CLOUD
COMPUTING
PREDICTIVE
ANALYTICS
CYBER
SECURITY
A continous development of modular
solutions will make ships smarter
adding advanced navigation
capabilities, increased levels of
automation, connected systems and
insight driven value added services
• Advanced route planning
• Collision prevention
• Autodocking
• Remote and automated operations
• Holistic energy and emission management
• Fleet coordination

13. © Wärtsilä 14.5.201813
WÄRTSILÄ HYTUG SERIES ECO-FRIENDLY DESIGN
Wärtsilä HYTug Series
Operation Features:
• To assist in the berthing and un-berthing operation of vessels calling at ports/ terminals
• To perform towing, ship handling operation in Ports/ terminals
• Escorting at high speed (for escort tug version)
• Fire-Fighting (optional)
[Wärtsilä Eco-Friendly Tug/ Ngoh]

14. © Wärtsilä 14.5.201814
DESIGN HIGHLIGHTS
MECHANICAL-HYBRID
SHAFT M/G
Main engine with clutch
In-line shaft generator/motor
Energy storage system
DC link and power drives
Energy Management System
Thrusters, shafting & propulsion controls
ELECTRICAL-HYBRID
Generating set
Energy storage system
DC link and power drives
Energy Management System
Thrusters, thruster motors & propulsion
controls
Modular Hybrid propulsion
[Wärtsilä Eco-Friendly Tug/ Ngoh]

15. © Wärtsilä 14.5.201815
SINGLE LINE DIAGRAM
Wärtsilä HYTug 75H
Diesel Electric Hybrid configuration
DC DC
Em. 24V/DC
230V/60Hz
Feeders
W8L20
1600kWM
1000rpm
G G
M M
BatteryBattery
150kVA
WST24
2075kW
2.8m
Sum Battery Capacity:
75TBP - 500kWh
W8L20
1600kWM
1000rpm
WST24
2075kW
2.8m
440V/60Hz
Feeders
50kVA
Shore
Connection
Emergency
Batteries
Wärtsilä HYTug 75E
Diesel Mechanical Hybrid configuration
DC
Battery
FeedersFeeders
Em. Gen
97KW
1800rpm
G
M M
500kVA
Aux. Gen
250kW
1800rpm
230V/60Hz 230V/60Hz
PTI / PTO
Transit: 460kW @ 760rpm
Boost: 415kW @ 1200rpm
Generator: 540kW @ 890rpm
Battery Capacity:
75TBP - 400kWh
W8L20E
1760kW
1200rpm
W8L20E
1760kW
1200rpm
WST24
2175kW
2.8m
WST24
2175kW
2.8m
50kVA
G
Feeders
440V/60Hz
Shore
Connection
[Wärtsilä Eco-Friendly Tug/ Ngoh]

16. © Wärtsilä 14.5.201816
HARBOUR TUG TYPICAL OPERATING PROFILE
0.10%
3%
11% 11%
2%
12%
25%
25.90%
10%
0%
5%
10%
15%
20%
25%
30%
Steaming
Max
(13 knots)
Transit high
(12 knots)
Transit Eco 1
on Battery
(10 knots)
Transit Eco 2
on Battery
(8 knots)
Peak Load
(Max BP)
Medium
Assist
Low Assist Loitering-
Standby/
Loitering- on
Battery
Harbour –
Standby/
Harbour-
Standby on
battery
%Time
Mode Annual
Time
(%)
Annual
Time
(Hours/year)
Steaming Max (13 knots) 0.1 3
Transit high (12 knots) 3 94
Transit Eco 1 on Battery (10
knots)
11 343
Transit Eco 2 on Battery (8 knots) 11 343
Peak Load (Max BP) 2 62
Medium Assist 12 374
Low Assist 25 780
Loitering- Standby/ Loitering- on
Battery
25.9 808
Harbour – Standby/ Harbour-
Standby on battery
10 312
Total: 100% 3120
[Wärtsilä Eco-Friendly Tug/ Ngoh]

17. © Wärtsilä 14.5.201817
OPERATING MODE HARBOUR STANDBY ON BATTERY
All-electric mode
Both engines off,
all power from batteries:
Zero Emission
[Wärtsilä Eco-Friendly Tug/ Ngoh]
AC SWB
=
=
M/G
=
≈
ENGINE
≈
=
M/G
=
≈
ENGINE
DC LINK
ESS

18. © Wärtsilä 14.5.201818
OPERATING MODE ECO TRANSIT 8-10 KNOTS
[Wärtsilä Eco-Friendly Tug/ Ngoh]
Green mode
Both engines off,
all power from batteries:
Zero Emission
AC SWB
=
=
M/G
=
≈
ENGINE
≈
=
M/G
=
≈
ENGINE
DC LINK
ESS

19. © Wärtsilä 14.5.201819
OPERATING MODE LOITERING STANDBY/ WAITING
[Wärtsilä Eco-Friendly Tug/ Ngoh]
AC SWB
=
=
M/G
=
≈
≈
=
M/G
=
≈
ENGINE
DC LINK
ENGINE
ESS
Start & stop
Low state of charge:
engine provides power
and recharges batteries

20. © Wärtsilä 14.5.201820
OPERATING MODE LIGHT/ MEDIUM ASSIST
Peak shaving
Both engines providing
power, batteries taking
sudden load peaks,
Instant Load taking
[Wärtsilä Eco-Friendly Tug/ Ngoh]
AC SWB
=
=
M/G
=
≈
≈
=
M/G
=
≈
ENGINE
DC LINK
ENGINE
ESS

21. © Wärtsilä 14.5.201821
OPERATING MODE PEAK LOAD (MAX BP)
[Wärtsilä Eco-Friendly Tug/ Ngoh]
AC SWB
=
=
M/G
=
≈
≈
=
M/G
=
≈
ENGINE
DC LINK
ENGINE
ESS
Power boost
Batteries and engines
providing power
simultaneously

22. © Wärtsilä 14.5.201822
WÄRTSILÄ HYTUG PROPULSION CONFIGURATION
[Wärtsilä Eco-Friendly Tug/ Ngoh]
Type
High Speed
DM - Conventional
Wärtsilä
DM - Conventional
Wärtsilä
HYTug DE 75H
Wärtsilä
HYTug DM 75H
Propulsion
Configuration
Conventional Conventional Wärtsilä HY [DE] Wärtsilä HY [DM]
Main engines High Speed
[2 x 2240 kW @1800rpm]
2 x W6L26
[2 x 2100kW @ 1000rpm)
2 x W8L20
[2 x 1520kW @ 1000rpm)
2 x W8L20E
[2 x 1760kW @ 1200rpm)
Available Battery
Power
- - 1500 kW 1200 kW
Battery Capacity - - 565 kWh
[3C rating]
452 kWh
[3C rating]
Thrusters 2 x azimuth thrusters
[FPP Dia. 2.60m]
2 x WST-21 FPP
[Dia. 2.60m]
2 x WST-24 FPP
[2075 kW, Dia. 2.80m]
2 x WST-24 CPP
[2175 kW, Dia. 2.80m]
Thruster E-motor - -
2 x 2075 kW
@1200rpm
2 x 460kW @
760rpm
Shore connection 80 kWe 80 kWe 80 kWe 80 kWe
Auxiliary gensets –
High Speed
2 x 99 ekW
[Non-Wärtsilä supply]
2 x 99 ekW
[Non-Wärtsilä supply]
- 1 x 99 ekW
[Non-Wärtsilä supply]
DM: Diesel Mechanical Propulsion
DE: Diesel Electric Propulsion
HY: Hybrid Propulsion with Batteries installed
FPP: Fixed Pitch Propeller
CPP: Controllable Pitch Propeller

23. © Wärtsilä 14.5.201823
75T BP HARBOUR TUG OPERATIONAL MODE ANALYSIS
[Wärtsilä Eco-Friendly Tug/ Ngoh]
High Speed: DM - FPP
Total installed generating power (kWm): 4,348
Operational Modes Analyses
Sailing Out
- 10kn
Sailing In -
10kn
Peak Load
75 TBP
Med. Assist --
- TBP
Low Assist ---
TBP
Loitering -
stand by
Harbour
% of Operational time: 11.8% 11.8% 2.0% 14.7% 31.4% 28.4% 72.6 %
Speed : Knots 10.0 10.0 0.0 0.0 0.0 0.0 0.0
Number of Op. Hours : 2400 282 282 48 353 754 682 6,360
Needed Total Mechanical Power kWm 759 759 4,213 2,372 1,288 294 30
PowerProduction
Variable rpm - DM - input for needed prop. power Main Engines
Main Engine rpm 1800 % 57% 57% 100% 84% 68% 39% 100%
Available Power 19% 19% 100% 59% 31% 6% NA
Main Engine rpm rpm 1026 1026 1800 1512 1224 702 1800
Main Engine 1 - Highspeed 2,075 kWm 348 348 2,075 1,154 612 116 -
Main Engine 2 - Highspeed 2,075 kWm 348 348 2,075 1,154 612 116 -
Aux Genset 1 - Highspeed 99 kWm 62 62 32 32 32 62 -
Aux Genset 2 - Highspeed 99 kWm - - 32 32 32 - -
Harbour Power 80 kWe - - - - - - 30
Loadin%(mech.)
Main Engine 1 - Highspeed % 16.8% 16.8% 100.0% 55.6% 29.5% 5.6% 0.0%
Main Engine 2 - Highspeed % 16.8% 16.8% 100.0% 55.6% 29.5% 5.6% 0.0%
Aux Genset 1 - Highspeed % 63.0% 63.0% 32.0% 32.0% 32.0% 63.0% 0.0%
Aux Genset 2 - Highspeed % 0.0% 0.0% 32.0% 32.0% 32.0% 0.0% 0.0%
Battery used as Generator % 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Harbour Power % 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 37.7%
SUM Energy Consumption in each mode: GJ/year 2,633 2,691 2,811 10,107 13,976 4,084 691
Fuel consumption in ton MGO Ton/year 62 63 66 237 327 96 -
Supply of Harbour El. Power MWh - - - - - - 192

24. © Wärtsilä 14.5.201824
75T BP HARBOUR TUG OPERATIONAL MODE ANALYSIS
[Wärtsilä Eco-Friendly Tug/ Ngoh]
Wartsila Conventional DM-FPP
Total installed generating power (kWm): 4,398
Operational Modes Analyses
Sailing Out
- 10kn
Sailing In -
10kn
Peak Load
75 TBP
Med. Assist --
- TBP
Low Assist ---
TBP
Loitering -
stand by
Harbour
% of Operational time: 11.8% 11.8% 2.0% 14.7% 31.4% 28.4% 72.6 %
Speed : Knots 10.0 10.0 0.0 0.0 0.0 0.0 0.0
Number of Op. Hours : 2400 282 282 48 353 754 682 6,360
Needed Total Mechanical Power kWm 767 767 4,263 2,399 1,302 287 30
PowerProduction
Variable rpm - DM - input for needed prop. power Main Engines
Main Engine rpm 1000 % 57% 57% 100% 87% 70% 40% 100%
Available Power 19% 19% 100% 66% 34% 6% NA
Main Engine rpm rpm 570 570 1000 870 700 400 1000
Main Engine 1 - W6L26 2,100 kWm 352 352 2,100 1,168 619 112 -
Main Engine 2 - W6L26 2,100 kWm 352 352 2,100 1,168 619 112 -
Aux Genset 1 - Highspeed 99 kWm 62 62 32 32 32 62 -
Aux Genset 2 - Highspeed 99 kWm - - 32 32 32 - -
Harbour Power 80 kWe - - - - - - 30
Loadin%(mech.)
Main Engine 1 - W6L26 % 16.8% 16.8% 100.0% 55.6% 29.5% 5.4% 0.0%
Main Engine 2 - W6L26 % 16.8% 16.8% 100.0% 55.6% 29.5% 5.4% 0.0%
Aux Genset 1 - Highspeed % 63.0% 63.0% 32.0% 32.0% 32.0% 63.0% 0.0%
Aux Genset 2 - Highspeed % 0.0% 0.0% 32.0% 32.0% 32.0% 0.0% 0.0%
Em. Genset % 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Harbour Power % 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 37.7%
SUM Energy Consumption in each mode: GJ/year 2,399 2,452 2,365 8,412 11,738 3,672 691
Fuel consumption in ton MGO Ton/year 56 57 55 197 275 86 -
Supply of Harbour El. Power MWh - - - - - - 192

25. © Wärtsilä 14.5.201825
75T BP HARBOUR TUG OPERATIONAL MODE ANALYSIS
[Wärtsilä Eco-Friendly Tug/ Ngoh]
Wartsila HYTug DM-FPP - Hybrid
Total installed generating power (kWm): 3,679
Operational Modes Analyses
Sailing Out
- 10kn
Sailing Out
on Battery
- 10kn
Sailing In
- 10kn
Sailing In
on Battery
- 10kn
Peak Load
75 TBP
Med. Assist
--- TBP
Low Assist
--- TBP
Loitering -
stand by
Loitering on
Battery
Harbour
% of Operational time: 5.5% 6.3% 5.5% 6.3% 2.0% 14.7% 31.4% 7.5% 20.9% 72.6 %
Speed
:
Knots 10.0 10.0 10.0 10.0 0.0 0.0 0.0 0.0 0.0 0.0
Number of Op. Hours : 2400 131 151 131 151 48 353 754 180 501 6,360
Needed Total Mechanical Power kWm 2,131 808 2,132 808 4,489 2,595 1,548 808 157 31
PTO 1 540 @ 890rpm kWm 536 - 537 - - 42 78 538 - -
PTO 2 540 @ 890rpm kWm 536 - 537 - - 42 78 - - -
PowerProduction
Variable rpm - DM - input for needed prop. power
Main Engines
Main Engine rpm 1200 % 85% 100% 85% 100% 100% 91% 77% 77% 100% 100%
Available Power 61% NA 61% NA 100% 75% 46% 46% NA NA
Main Engine rpm rpm 1020 1200 1020 1200 Increase 1092 924 926 1200 1200
Main Engine 1 - W8L20E 1,760 kWm 1,066 - 1,066 - 1,760 1,297 774 808 - -
Main Engine 2 - W8L20E 1,760 kWm 1,066 - 1,066 - 1,760 1,297 774 - - -
Aux Genset 1 - Highspeed 99 kWm - - - - - - - - - -
Battery used as Generator 1,200 kWe - 808 - 808 968 - - - 157 -
Harbour Power 80 kWe - - - - - - - - - 31
Loadin%
(mech.)
Main Engine 1 - W8L20E % 60.6% 0.0% 60.6% 0.0% 100.0% 73.7% 44.0% 45.9% 0.0% 0.0%
Main Engine 2 - W8L20E % 60.6% 0.0% 60.6% 0.0% 100.0% 73.7% 44.0% 0.0% 0.0% 0.0%
Aux Genset 1 - Highspeed % 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Battery used as Generator % 0.0% 67.3% 0.0% 67.3% 80.7% 0.0% 0.0% 0.0% 13.1% 0.0%
Harbour Power % 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 38.4%
SUM Energy Consumption in each mode: GJ/year 1,957 438 1,958 439 1,630 7,839 10,073 995 284 704
Fuel consumption in ton MGO Ton/year 56 - 56 - 34 184 241 30 - -
Supply of Harbour El. Power MWh - - - - - - - - - 196

26. © Wärtsilä 14.5.201826
75T BP HARBOUR TUG OPERATIONAL MODE ANALYSIS
[Wärtsilä Eco-Friendly Tug/ Ngoh]
Wartsila HYTug DE-FPP-Hybrid
Total installed generating power (kWm): 3200
Operational Modes Analyses
Sailing Out
- 10kn
Sailing Out
on Battery
- 10kn
Sailing In
- 10kn
Sailing In
on Battery
- 10kn
Peak Load
75 TBP
Med. Assist
--- TBP
Low Assist
--- TBP
Loitering -
stand by
Loitering on
Battery
Harbour
% of Operational time: 7.1% 4.7% 7.1% 4.7% 2.0% 14.7% 31.4% 4.1% 24.3% 72.6 %
Speed
:
Knots 10.0 10.0 10.0 10.0 0.0 0.0 0.0 0.0 0.0 0.0
Number of Op. Hours : 2400 169 113 169 113 48 353 754 99 583
6,360
Needed Total Mechanical Power kWm 1,363 786 1,364 787 4,559 2,616 1,455 1,291 175 31
PowerProduction
Main Genset 1 - W8L20 1600 kWm - - - - 1,600 1,308 1,455 - - -
Main Genset 2 - W8L20 1600 kWm 1,363 - 1,364 - 1,600 1,308 - 1,291 - -
Battery used as Generator 1500 kWe - 786 - 787 1,359 - - - 175 -
Harbour Power 80 kWe - - - - - - - - - 31
Loadin%(mech.)
Main Genset 1 - W8L20 % 0.0% 0.0% 0.0% 0.0% 100.0% 81.8% 90.9% 0.0% 0.0% 0.0%
Main Genset 2 - W8L20 % 85.2% 0.0% 85.2% 0.0% 100.0% 81.8% 0.0% 80.7% 0.0% 0.0%
Battery used as Generator % 0.0% 52.4% 0.0% 52.4% 90.6% 0.0% 0.0% 0.0% 11.7% 0.0%
Harbour Power % 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 38.4%
SUM Energy Consumption in each mode: GJ/year 1,568 319 1,569 319 1,501 7,445 8,799 674 367 704
Fuel consumption in ton MGO Ton/year 44 - 44 - 30 176 211 24 - -
Supply of Harbour El. Power MWh - - - - - - - - - 196

27. © Wärtsilä
4800 4800
3014
1993
3554 3554
0
1000
2000
3000
4000
5000
6000
High Speed
DM - FPP
Wärtsilä
Conventional
DM - FPP
Wärtsilä
HYTug DM
– CPP
Wärtsilä
HYTug DE
– FPP
Mechanical Engine Running Hours
(Hours/ Year)
Main Engines Aux. Engines
14.5.201827
75T BP HARBOUR TUG COMPARED PROPULSION CONFIGURATION
[Wärtsilä Eco-Friendly Tug/ Ngoh]
4348 4398
3679
3200
1200
1500
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
High Speed
DM - FPP
Wärtsilä
Conventional
DM - FPP
Wärtsilä
HYTug
DM – CPP
Wärtsilä
HYTug
DE – FPP
Installed Power (kW)
Main Engines Battery
Ref
-37.2%
-58.5%
Comparison
High Speed Wärtsilä Wärtsilä HYTug
DM - FPP DM - FPP
DM - CPP -
Battery
DE – FPP
Battery
Total Installed Mechanical Power: kWm 4,348 4,398 3,679 3,200
Available Battery Power kW - - 1,200 1,500
Battery Capacity kWh - - 452 565
Main Engine running hours: Hours/year 4,800 4,800 3,014 1,993
Aux. Engines running hours Hours/year 3,554 3,554 - -
Fuel Type MGO MGO MGO MGO
-16.4%
-28%
Ref

28. © Wärtsilä 14.5.201828
75T BP HARBOUR TUG COMPARED FUEL SAVINGS
[Wärtsilä Eco-Friendly Tug/ Ngoh]
Note: The calculation above based on global average bunker price of USD610/ ton.
Fuel Savings
REF.
High Speed
Wärtsilä Wärtsilä HYTug
DM - FPP DM - FPP
DM - WHY
Battery
DE – FPP
Battery
Fuel consumption in Ton: Ton/year 812 741 567 528
Fuel Cost in USD: USD 495 385,00 451 709,00 345 780,00 322 311,00
Reduced Fuel cons. compared with Ref.: Ton/year - 72 245 284
Reduced Fuel cost compared with Ref.: USD - 43 767,00 149 605,00 173 074,00
-
100,000.00
200,000.00
300,000.00
400,000.00
500,000.00
600,000.00
Conventional
with High Speed
(3516 + FPP -
21)
Conventional
with Medium
Speed (6L26 +
FPP -21)
Hybrid Tug -
Diesel Electric
(8L20 +FPP - 24)
DM WHY (6L26
+ CPP)
FUEL COST(ANNUAL)
-8,8%
-34,9% -30,2%

29. © Wärtsilä 14.5.201829
75T BP HARBOUR TUG COMPARED PROPULSION CONFIGURATION (CONT.)
0
10
20
30
40
50
60
70
80
90
100
EmissionValues(%)
[Wärtsilä Eco-Friendly Tug/ Ngoh]
Emissions
REF.
High Speed
Wärtsilä Wärtsilä HYTug
DM - FPP DM - FPP
DM - CPP
Battery
DE – FPP
Battery
Summary of Yearly consumption of
MGO
Ton/year 850 727 601 529
Emissions, CO2 Ton/year 2,789 2,384 1,940 1,710
Comparison CO2 - relative to Ref. % 100.0% 85.5% 69.6% 61.3%
Emissions, NOx - Tier II Ton/year 53.1 45.4 28.8 25.4
Comparison NOx - relative to Ref. % 100.0% 85.5% 54.3% 47.9%
Emissions, Sox Ton/year 1.7 1.5 1.2 1.1
Comparison SOx - relative to Ref. % 100.0% 85.5% 70.6% 62.3%
Emissions, Particles Ton/year 0.418 0.358 0.197 0.174
Comparison Particles - relative to Ref. % 100.0% 85.5% 47.1% 41.5%

30. © Wärtsilä 14.5.201830
75T BP HARBOUR TUG COMPARED MAINTENANCE COST
[Wärtsilä Eco-Friendly Tug/ Ngoh]
Conventional
with High
Speed (3516
+ FPP - 21)
Conventional
with Medium
Speed (6L26
+ FPP -21)
Hybrid Tug -
Diesel
Electric
(8L20 +FPP
- 24)
DM WHY
(6L26 +
CPP)
Fuel Cost (USD) 9,907,700.00 9,034,180.00 6,446,220.00 6,915,600.00
Maintenance(USD) 4,775,146.08 2,243,426.40 2,184,198.87 3,938,357.64
4,775,146.08
2,243,426.40 2,184,198.87
3,938,357.64
9,907,700.00
9,034,180.00
6,446,220.00
6,915,600.00
-
2,000,000.00
4,000,000.00
6,000,000.00
8,000,000.00
10,000,000.00
12,000,000.00
14,000,000.00
16,000,000.00
OPEX IN 20 YEARS OPERATION
-23,2%
-41,2%
-26%
-
170,261.98
191,444.42
302,621.36
Conventional
High Speed
Conventional
Medium Speed
Hybrid Tug DM Hybrid Tug DE
Annual OPEX Savings

31. © Wärtsilä 14.5.2018 [Presentation name / Author]31
(3,000,000.00)
(2,000,000.00)
(1,000,000.00)
0.00
1,000,000.00
2,000,000.00
3,000,000.00
4,000,000.00
5,000,000.00
6,000,000.00
7,000,000.00
8,000,000.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Payback Analysis
Hybrid Tug - Diesel Electric (8L20 +FPP - 24)
Hybrid Tug - Diesel Mechanic (8L20 + CPP)

32. © Wärtsilä
Conventional Tug
DM High Speed
WÄRTSILÄ
Conventional Tug
DM Medium Speed
WÄRTSILÄ HYTug
DM W8L20E + 452 kWh
WÄRTSILÄ HYTug
DE W8L20 + 565 kWh
Total Installed Mechanical
Power

Similar to Ref

Ref

-16.4%

-28%
Power boost

Not available

Not available

+1200 kW

+1500 kW
Duration of Max BP with
Power boost

Not available

Not available

20 mins
(>2 mins as required)

17 mins
(>2 mins as required)
Response

Load ramps

Load ramps

Instant

Instant
Smoke

At start / load taking

At start / load taking

Zero

Zero
Green mode
Supported by Start&Stop

Not available

Not available

Yes

Yes
Duration of Eco Transit
Mode (10 knots)

Not available

Not available

23 mins
(>12 mins as required)

30 mins
(>12 mins as required)
Main Engines Running
Hours

Similar to Ref

Ref

-37.2%

-58.5%
Maintenance costs

More cyl-hours, shorter
TBOs

Ref

Less cyl-hours, longer
TBOs

Less cyl-hours, longer
TBOs
14.5.201832
75T BP HARBOUR TUG SUMMARY OF COMPARED PERFORMANCE
[Wärtsilä Eco-Friendly Tug/ Ngoh]

33. © Wärtsilä 14.5.201833
75T BP HARBOUR TUG COMPARED FUEL EFFICIENCY & EMISSION
116.3%
100.0%
88.7%
78.1%
70%
75%
80%
85%
90%
95%
100%
105%
110%
115%
120%
High Speed
DM - FPP
Wärtsilä
Conventional
DM - FPP
Wärtsilä HYTug
DM – CPP
Wärtsilä HYTug
DE – FPP
FuelConsumption(%)
The efficiency comparison has been performed based on fuel consumption per kW of power
delivered to the thrusters, and all losses (mechanical and electrical) in the different
alternatives are taken into account.
0
10
20
30
40
50
60
70
80
90
100
EmissionValues(%) -23% -40% -22% -48%
-11%
-22%
+16%
[Wärtsilä Eco-Friendly Tug/ Ngoh]

34. © Wärtsilä 14.5.201834
WÄRTSILÄ HYTUG SERIES CUSTOMER VALUES
* ...
Weight & Volume
Operational costs
 Power boost for higher tbp
from energy storage
 Less cylinders
 GA flexibility
 Built-in redundancy
 Back-up logics
 Instant load taking
Green image
Interfaces with supplierBollard pull
Safety & Reliability
 Reduced maintenance costs
(less cylinder-hours, reduced stress to components)
 Reduced fuel consumption
 Green mode (zero emission)
 Start & stop
 Smokeless operations
 Wärtsilä as the single supplier
 In-house integration
 Single set of documentation
 Reduced interfaces
 Less commissioning days
 Guaranteed performance
Performance
 Continuous EMS tuning
 Easy EMS expansion
Life-Cycle Support
 Service agreements
[Wärtsilä Eco-Friendly Tug/ Ngoh]

35. © Wärtsilä 14.5.201835
WÄRTSILÄ LNGTUG SERIES HIGHLIGHTS & CUSTOMER VALUES
• Optimised hull for high performance
• Safety and comfort for crew
• High manoeuvrability
• Good sea keeping
• Integrated ‘State-of-the-Art’ & proven Wärtsilä LNG propulsion system
• Significant improvement regarding lower emission with Tier III compliance
• Wärtsilä as full integrator, guaranteed performance & life-cycle support
CO2
NOx
SOx
Particulates Diesel
engine
0
10
20
30
40
50
60
70
80
90
100
Emission
values [%]
-25%
-85%
-99%
-99%
Dual-Fuel engine
in gas mode
SOx compliant
IMO Tier III compliant
[Wärtsilä Eco-Friendly Tug/ Ngoh]

36. © Wärtsilä 14.5.201836
WÄRTSILÄ HY / LNGTUG SERIES
Wärtsilä
ECO-Friendly Tug series
Reducing Emission
with
[Wärtsilä Eco-Friendly Tug/ Ngoh]

37. © Wärtsilä 14 May 2018 A SUSTAINABLE MODEL FOR FUTURE SHIPPING37
THANK YOU!
JOIN US ON A MARINE JOURNEY
TO THE FUTURE.
Kevin Humphreys
Kevin.Humphreys@wartsila.com