Post-Panamax Cruise Ship Workshop 1: Resistance, propulsion and machinery Aleksi Airinen Andres Kurmiste Rainer Klein

Plausible resistance estimation Ship resistance estimation by Holtrop-Mennen Method

But something is wrong Comparison of frictional and residual resistance in HMM

Let’s check the components Resistance component at cruise speedValue in kN Frictional1530 Appendage458 Transom0 Bulb97 Wave421 Correlation541 Odd...

Resistance needs refinement Current methods inaccurate –Refine Hotrop-Mennen and ITTC-57 Current dimensions Fix implementation errors Too few methods –Apply a third method –These have been proven reliable Andersen-Guldhammer HSTS –Maybe by NavCad or Napa

Medium-speed diesel engines still the best Power generation –6 x Wärtsilä Medium-speed engines –6 x ABB generators –Output kVA Choices based on –Power requirement –Reference ships

Will we have sufficient power? Propulsion –3 x ABB Azipods 37 MW at operational speed (22 kn) 51 MW at max speed (25.5 kn) –5 x Wärtsilä CT3500 bow thrusters Up to 27 MW Auxiliary systems –Based on reference ships

Effective power 38 MW or 51 MW?

More analysis necessary Create energy demand profile –Propulsion machinery –Estimated auxiliary system use Update power generation machinery –Energy sufficiency –Further compare engines, generators Fuel usage Compatibility Price

Our propellers need some work Number of propellers –Based on reference ships Operational point –Will be found with Wageningen B-series Cavitation –Will calculate with methods from Ship Hydrodynamics

We will be on time Resistance calculations by –New method –Compared to refined old methods –By Rainer Propeller calculations by –Number, cavitation and efficiency –By Aleksi Machinery systems by –Energy profile –Sufficiency –By Andres

Thank you!