Zero emission commuter ferry

Kul-24.4110, Ship Project A

Tomas Their (224051), Ran Xiao (467643)

Kul-24.4110, Ship Project A 2

Original conceptResistance calculationsGeneral arrangementStructural calculationsWeight estimationStabilityCost estimationConclusions

Main content

16.12.2014

Kul-24.4110, Ship Project A 3

“Zero emission commuter ferry to be used in Helsinki”

City centre - Kruunuvuorenranta

16.12.2014

Original concept

Kul-24.4110, Ship Project A 4

Original specifications 150 passengers (+ 20 bicycles, wheel chair

capacity etc.) Wooden catamaran Hydrogen fuel cells Service speed 15 knots 24 m long, 9 m wide, 1.15 m draught

16.12.2014

Original concept

Kul-24.4110, Ship Project A 5

Poorly done during concept phase Catamaran calculations

Problematic Reliability of results

Cavitation RPM limitation: 390 r/min

Final results: Lower service speed to 13 knots 2 x 320 kW engines

16.12.2014

Resistance calculations

Kul-24.4110, Ship Project A 6

Small ship Emphasis on more details

Passenger area done Machinery placement Other gear

16.12.2014

General arrangement

Kul-24.4110, Ship Project A 7 16.12.2014

Kul-24.4110, Ship Project A 8

Wooden structure Own regulations

Small ship Relatively easy calculations

Results: The current design has all the strength it needs

16.12.2014

Structural calculations

Kul-24.4110, Ship Project A 9

Unconventional design Direct approach simple

Weight of wood and other materialsWeight of main componentsPassengers and cargo

Final weight: 57,2 tons

Comparing the results to other ships is useless

The draught is similar to that of other ships of the same size

16.12.2014

Weight estimation

Kul-24.4110, Ship Project A 10

Vertical center of gravity High and heavy roof vs. machinery in the hulls

Catamaran design helps with stability

Final results: The recovering moment is much more than the needed one. Fully satisfied the requirement of DNV’s regulation for the ferry.

16.12.2014

Stability

Kul-24.4110, Ship Project A 11

As with weight, a direct approach is best Price of materials, main components, other

Final cost: 1,88 million €

Comparisons with ships in the same class Simple ships: ~ 1,5 million € Complicated ships: ~ 3,5 million €

Ar Vag Tredan gives interesting comparison

16.12.2014

Cost estimations

Kul-24.4110, Ship Project A 12

Changes from concept: Higher weight Slower speed

Higher power Cost same Main design points same

The ship seems feasible More work is needed to make final decision (Proper CAD model would have been nice)

16.12.2014

Conclusions

Kul-24.4110, Ship Project A 13

Thank you!Questions?

16.12.2014