Optimum B-Series Propeller (Fixed diameter) - Calculator

Use this calculator to determine the optimum Wageningen B-Series propeller for a given propeller diameter.

The expanded area ratio Ae/Ao can be estimated using the proposed equation by Keller to avoid cavitation if 0 is entered below.

Use following link for example use: link

Please be aware that the calculator do not account for everything. Garbage in equals garbage out.

Property Symbol Value Unit
Ship speed Vs knots
Required thrust Tr kN
Wake fraction w
Number of propellers NP
Propeller diameter D m
Number of propeller blades per propeller Z
Expanded area ratio (Enter 0 and it is estimated using Keller) Ae/Ao
Depth from water surface to propeller hub center
(Only needed if 0 is entered as expanded area ratio)
h m
Property Symbol Value Unit
Thrust per propeller Tr 912.0 kN
Propeller diameter D 8.00 m
Number of propeller blades Z 4
Wake fraction w 0.260
Ship speed Vs 9.26 m/s
Speed of advance Va 6.85 m/s
Advance ratio J 0.805
Pitch-diameter ratio P/D
Rate of revolutions n 1.06 rps
Rate of revolutions n 63.9 rpm
Expanded area ratio Ae/Ao 0.424
Thrust coefficient KT 0.192
Torque coefficient KQ 0.0363
Open water efficiency ηO 0.677
Torque per propeller Q 1380.2 kNm
Delivered power per propeller Pd 9229.0 kW