Andrew Duncan James Anderson CMAL Project Team Preliminary Design Considerations of CalMac Ferries Ltd Capable of Serving Multiple Routes on West Coast Transport Scotland Requirements Brodick ID: 488493
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Slide1
New Dual Fuel Ferry Slide2
Andrew Duncan
James Anderson
CMAL Project Team Slide3
Preliminary Design Considerations of
CalMac
Ferries Ltd Slide4
Capable of Serving Multiple Routes on West Coast
Transport Scotland RequirementsSlide5
Brodick
Ardrossan
Gourock
Uig
Tarbert
Coll
Tiree
CastlebayLochboisdaleCraignureUllapoolStornowayObanLochmaddyColonsayPortsSlide6
Length Restricted to 102.4m
Beam Restricted to be able to operate from current linkspans
Draft Restricted to 3.4m (3.6m at a few ports)
RestrictionsSlide7
Development of SpecificationsSlide8
Special ConsiderationsSlide9
Design ChallengesSlide10
Shipyard TenderingSlide11
Initial Deployment
Vessel 1- Ardrossan -
Brodick
Vessel 2- Uig Triangle Slide12
Launched at Flensburg Shipyard, Germany
21 March 2014 by Mrs Joan Murray
New Vessels – Comparison with existing vessels
Hebrides
Caledonian
Isles
Loch Seaforth
New VesselsLength Overall9994117.9102.4Beam (inc.
belting)
16.3
16.3
19.8
17.5
Draught
3.2
3.2
4.8
3.4
Deadweight
624
704
1500
900
No of Cars
100
110
143
127/136
No of Passengers
612
1000
700
1000
Gross Tonnage
5506
52218680TBCService Speed16.514.519.216.5/14.5Main Engines2 x 3840 kW2 x 2163 kW2 x 4000 kWPlus 3 x 1520 kWAuxiliary2 x 3000 kWPlus 2 x 920 kWAuxiliarySlide13
The vessels are to be capable of running on dual fuel:
The flexibility of using Marine
Gas
Oil (MGO
)
and Liquid Natural
Gas (LNG) provide the opportunity to lower emissions and gives greater flexibility over future fuel costs. And allows the vessels to be operated at various ports.Using LNG as a fuel offers clear environmental benefits: The NOx emissions are at least 80% below the current IMO level
The amount of emitted particles are less than 10% compared to a conventional marine diesel engine running on
diesel
The SOx emissions are almost
negligible
Further, gas operation generates in general 25-30% lower CO
2
emissions compared to diesel
operation
However,
Methane
slip has to be avoided during the bunkering and combustion processes of the engines as
this
is damaging in the context of greenhouse
gases
Methane is 25 to 28 times more harmful than CO
2
Total CHG CO
2
equivalents including contribution from THC is 18 to 20% less than that for HFO
Why Dual
F
uel for Ferries Slide14
RefuellingSlide15
RefuellingSlide16
RefuellingSlide17
Gas Tank InstallationSlide18
Model Stern ArrangementSlide19
Ship ModelSlide20
Model Test TankSlide21
SimulationsSlide22
Build ProgrammeSlide23
Thank
you
Any Questions?