“THE SUSTAINABLE SOLUTION FOR DREDGING”.

MID 8 SEPT 2014BY CARLO CONTESSI

8 September 20141 © Wärtsilä

Contents

1. Why looking for (fuel) alternatives

2. Dual Fuel sustainable on Dredgers

1. Dual Fuel Design, Operation and Maintenance

2. Dredgers applications typical aspects

3. Wärtsilä dual fuel engine developments

NOx

Acid rains

Tier II (2011)Tier III (2016)

SOx

Acid rains

3.5% (2012)ECA 0.1% (2015)

CO2

Greenhousegas

Under evaluation by IMO

PMHarming humans

and animals

Along with SOxreduction

)

Introduction: Why LNG?

Current and potential emission control areas

Introduction: Why LNG?

Introduction: Why LNG?

0 200 400 600 800 1000 1200 1400 1600 1800 2000

6

8

10

12

14

16

18

2

0

Specific NOx emissions (g/kWh)

Rated engine speed (rpm)

Tier II (global 2011)Ships built 2011 onwardsEngines > 130 kW

Tier III (ECAs 2016)Ships in designated areas, 2016 onwardsEngines > 130 kW

Tier I (present)Ships built 2000 onwardsEngines > 130 kW

Retrofit: Ships built1990 – 2000 Engines > 90 litres/cylinderand > 5000 kWDry/Wet Methods

4Selective Catalytic Reduction

Wärtsilä dual-fueltechnologyWärtsilä dual-fueltechnology

First driving factor : fuel prices Marine Diesel Oil Rotterdam

Fuel price [USD/MMBTU]

Source: bunkerworld.com; LNG OneWorld.com

180 Centistoke Rotterdam

?

380 Centistoke RotterdamHenry Hub (Natural Gas)

Marine Gas Oil Rotterdam

0,0

5,0

10,0

15,0

20,0

25,0

30,0

35,0

8 September 20147 © Wärtsilä Wartsila Technical Seminar Turku 2014

Solutions to fulfil the limitations

... running on HFO/MDO ... running on MGO ... running on LNG

IMO TIER III

SOx compliant

EPA compliant

LNG ship - Emissions

9 © Wärtsilä

CO2

NOx

SOx

ParticulatesDieselengine

0

10

20

30

40

50

60

70

80

90

100

Emissionvalues [%]

-25%

-85%

-99%

-99%

Dual-Fuel enginein gas mode

IMO Tier III compliant

SOx compliant

EPA compliant

2. Dual Fuel sustainable on Dredgers

1. Dual Fuel Design, Operation and Maintenance

IMO – IGF Code

DNV - GAS FUELLED ENGINE INSTALLATIONS

IMO – Resolution MSC.285(86) – Interim Guidelines on Safety for Natural Gas-Fuelled Engine Installations in Ships

GL - Guidelines on gas as a ship fuelABS - Guide for Propulsion and Auxiliary Systems for Gas Fueled ShipsBV - Safety Rules for Gas -Fuelled Engine Installations in Ships

LRS - Provisional Rules for the Classification of Methane Gas Fuelled Ships

IMO – IGC Code

ISO- Bunkering guidelines

Different studies

LNG: DesIGn, RULES and Requirements

HAZARDOUS ZONES

8 September 201413 © Wärtsilä

Bunkering

LNGPac™ Simplified P&ID – Vacuum - PBE

Bunkering

8 September 201415 © Wärtsilä

• Truck to ship ~40 m3/h

• Stationary tank to ship ~ 500 m3/h

• Ship to ship ~150-200 m3/h

8 September 201416 © Wärtsilä

Bunkering from truck to ship

Bunkering of Viking Grace in Stockholm

Dual Fuel Operation and Maintenance

“LNG and natural gas system proven very reliable.Scavenging air channel after 14 000 hours operation

Maintenance interval is now set to 25 000 hours”

Quote from Eidesvik:

Wärtsilä added values on Dredgers

2. Dredgers applications typical aspects

4-stroke DF Portfolio & Application types

8 September 2014 Wartsila Technical Seminar Turku 201419 © Wärtsilä

0 5 10 15

50DF

20DF

46DF

0.5 -1.8 MW

3,0 – 10,0 MW

6.2 -18.3 MW

5.8- 17.5 MW

20

34DF

• LNG Carriers• Cruise ships• RO-RO/PAX• Ferries• Large Offshore Units

• Small LNG / CNG vessel

• Small cargo vessels• Supply vessel• Offshore application &

Production• Aux. engines with

W50DF

• LNG Feeder• Jack-up• Tugs• Small cargo vessels• Barges• Small ferries• Aux. engines with

W34DF & W50DF

• LNG Carriers• Cruise ships• RO-RO/PAX• Ferries• Large Offshore Units

Trailing Suction Hopper Dredger (TSHD)

8 September 201420 © Wärtsilä

Main Features:• Self-propelled dredger used to maintain or deepenchannels and fairways or constructions of artificialislands

Typical operation profile:

1. Draghead2. Dredgepump3. Hopper

Requirements

Phase % in Rhs

Sailing to the dredging location 30

Dredging phase 30Sailing to the discharge point 30

Dumping/shore discharging 10

Engine direct drive

Engine costant torque

Operation profile with dumping

Cutting Suction Dredger

8 September 201421 © Wärtsilä

Main Features:• Stationary dredger equipped with a cutter head, whichexcavates the soil before it is sucked up by the flow ofdredge pump.

Typical operation profile:Phase % in Rhs

Cutting and pumping soft orhard soil: Consumers full load 80

Transient 10

Pump and boardnet 5

Boardnet 5

Fast and frequentload variations (instant load)Requirements

Wärtsilä added values on Dredgers

3. Wärtsilä dual fuel engine developments•W20DF

•W34DF

• W46DF

Wärtsilä 20DF

9/8/201424 © Wärtsilä

Main data: 176kW 185kW Cylinder bore 200 mm 200 mmPiston stroke 280 mm 280 mmCylinder output 146/176 kW/cyl 160/185 kWEngine speed 1000/1200 rpm 1000/1200 rpmMean effective pressure 20.0 bar 22 barMethane number > 80* > 80*Regulation IMO Tier II & Tier III Cylinder configurations 6L, 8L, and 9L

* MN70 version in planning phase

170

175

180

185

20DF (176kW/cyl) 20DF (185kW/cyl)

What’s new : updated 20DF

9/8/201425 © Wärtsilä

Increased with 5%

7500

8000

8500

9000

20DF (176kW/cyl) 20DF (185kW/cyl)

Reduced with 7%

20DF energy consumption (gas mode)

kJ/k

Wh

195

200

205

20DF (176kW/cyl) 20DF (185kW/cyl)

g/kW

h

20DF fuel consumption (MDO)

kW/c

yl

20DF cylinder output (1200rpm)

MDO consumption maintained

0

20

40

60

80

100

120

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98100102104106108110112114116118120122124126128130132134136138140142144146148150152154156158160162164166168170172174176178180182184

Pow

er [

%]

Time [min]

Load step test for Duel Fuel 34 engine

Test Results

8 September 2014 34DF Dredger application test / Nico Höglund26 © Wärtsilä

34DF/W20DF load step variation successfully tested for dredger application test program in close cooperation with Royal IHC

34DF

Wärtsilä 34DF

8 September 2014 Dual fuel - E.Haapoja27 © Wärtsilä

Main data: 450kW 500kW Cylinder bore 340 mm 340 mmPiston stroke 400 mm 400 mmCylinder output 435/450 kW/cyl 485/500kWEngine speed 720/750 rpm 720/750rpmMean effective pressure 20.0/19.8 bar 22 barMethane number > 70 >80*Regulation IMO Tier II & Tier III Cylinder configurations 6L, 9L, 12V and 16V

Test conditions• Wärtsilä laboratory• ISO conditions• Gas MN >80• MDO pilot fuel• Standard reciver temperature• Generator drive* MN70 version in planning phase

What’s new : updated 34DF

28 © Wärtsilä

300

400

500kW

/cyl

34DF cylinder output (750rpm)

34DF New 34DF Old

6000

6500

7000

7500

kJ/k

Wh

34DF energy consumption (gas mode)

34DF New 34DF Old

Reduced with 4%

Increased with 11%

180

184

188

192

g/kW

h

34DF fuel consumption (MDO)

34DF New 34DF Old

Reduced with 3%

9/8/2014

-Current

-Current-Current

W46DF - main features

The most powerful marine gas engine in the market

Available for retrofit W46F to DF

600 rpm

• Approx: 1150kW/Cyl

• Lowest fuel consumption in the market.

W46DF installation’s benefits

W38C(725 kW/cyl)

W46DF(1145 kW/cyl)

600 rpm 600 rpm

24 cylinders 16 cylinders

2 * W12V38C 2 * W8L46DF

SFOC Diesel @ 100% load = 185 g/kWh SFOC Diesel @ 100% load = 182 g/kWh

SFOC Diesel @ 100% load = 7899 kJ/kWhSFOC Diesel @ 100% load = 7771 g/kWh

BSEC Gas @ 100% load = 7075 kJ/kWh

Assumed 17.4 MW power installed ( 2 x 12V38C ME - Hopper dredger)

W46DF MAIN BENEFITS:

- 3 g/kWh @ 100 % load SFOC vs W38C -> less fuel cost (DIESEL)- 8 cylinders installed in the engine room -> less maintenance

same rpm (600)+ 58 % kW/cyl installed vs W38C + 11 % more efficient in GAS mode vs W38C in Diesel mode

8 September 2014

Wärtsilä Worldwide Dredgers reference

More than

641 MWinstalled

31 © Wärtsilä

More than

155 enginesinstalled

More than

390 dredgers

in operation

Dual-fuel application references

8 September 2014 Wartsila Technical Seminar Turku 201432 © Wärtsilä

Merchant

Offshore

Cruise &Ferry

Navy

Others

Power Plants

DF Power Plant• 67 installations• 354 engines• Output 4600 MW • Online since1997

LNGC• 141 vessels• 567 enginesMultigas Carrier• 5 vessels• 20 engines

Conversion• 1 Chem. Tanker• 2 enginesRo-Ro• 2 vessels• 8 engines

OSV’s• 31 vessels• 96 engines

Production• 2 platform• 9 FPSO’s etc.• 1 FSO• 40 engines

LNG Cruise ferry• 1 vessels• 4 engines • Complete gas

train

LNG ferries• 4 ferries• 18 enginesConversion• 1 ferry• 2 engines

Coastal Patrol• DF-propulsion• DF main and

auxiliary engines

TUG• 2 vessel• 2 engines

each • Mechanical

drive

Guide Ship• 1 vessel

/engineIWW• 2 vessel• 3 engines

6 segments >1,000 engines 10,000,000 running hours

Dutch Recent References

8 September 2014 Presentation name / Author33 © Wärtsilä

Yard: Shipyard Constr. H-FoxholOwner: Chemgas ShippingDelivery: 2014/2015Amount of vessels: 2

Wärtsilä scope of supply:

• 1*W8L20DF main engine(8L20DF, 1’408kW)• Shaft, S&B

• CPP, HR Nozzle

Built 2000Overall lenght 177 meterWidth 11,45 meterDraft 2,56 meterTonnage 5300 tonnesCapacity (4 layers) 348 TEUEngines 2x 900 kW

Wärtsilä DF Sustainability proven

Excellent experience:

• Load taking capability

• Intrinsic redundancy – no interruption of operations

• Safety and fuel flexibility

• Application as:

• mechanical drive, (CPP,FPP, Pump)

• single main engine,

• OSV DP requirements.

• Etc..

8 September 201434 © Wärtsilä

Thank You!

8 September 201435 © Wärtsilä