General modelling criteria: 

Route modelling assumptions as follows: 

  • Calculations are based on the standard Baltic routes and the representative port parings (see below).
  • Distances between ports on basis of great circle method.
  • Savings are calculated in t/day for ballast, laden and round voyage.
  • The benefit of wind route optimisation to increase the savings further is not included.
  • Minimum 5-year wind data set to be used in the simulation.

Cape size route inputs:

Route Ballast Port Load Port Discharge Port Total Mileage Wind potential - region assessed
C2 Rotterdam Tubarao Rotterdam 5,003 Atlantic - North South, cross Equator
C3 Qingdao Tubarao Qingdao 11,339 South Atlantic, Indian Ocean to China
C5 Qingdao Port Hedland Qingdao 3,612 West Australia - China
C7 Rotterdam Bolivar Rotterdam 4,376 Northern Hemisphere Cross Atlantic
C17 Qingdao Saldanha Bay Qingdao 8,251 Indian Ocean/ South Africa to China

Reference ship: 

  • 5 to 10 (max) year-old Cape (not optimised for wind at NB)
  • 180k dwt, non-scrubber fitted, no ESD or rudder optimisation assumed
  • LOA 290m, beam 45m, TPC 121, 198k cbm grain capacity.
  • Assume scantling draft in laden condition.

 

Baltic standard speeds and consumptions

  • Full speed 14 knots laden or 15 knots ballast on 62mt VLSFO

  • Eco speed 12 knots laden or 13 knots ballast on 43mt VLSFO

  • No diesel assumed at sea, except required for WASP

 

IWSA members who have participated in this initiative:

The simulation and validated data for this resource has been kindly provided by the following members of IWSA (International Windship Association) who should be contacted directly for more detail.

  1. Anemoi – https://anemoimarine.com/ 
  2. WindWings® from BAR Technologies - https://www.bartechnologies.uk/commercial-ships/windwings/

Please contact [email protected] with any questions or comments.