METHOD FOR DETERMINING AN EFFECT OF VARYING A PROPULSOR CHARACTERISTIC ON VESSEL PROPULSOR PERFORMANCE

Disclosed is a method for determining an effect of varying a propulsor characteristic on vessel propulsor performance, the method comprising: obtaining information indicative of a performance property of a first propulsor of a vessel based on operation of the first propulsor for a first time period with a first variation of the propulsor characteristic; obtaining information indicative of the performance property of a second propulsor of the vessel based on operation of the second propulsor, simultaneous with the first propulsor, for the first time period with a second variation of the propulsor characteristic, wherein the second variation is different from the first variation; and determining a difference between the performance property of the first propulsor and the performance property of the second propulsor. Apparatus for determining an effect of varying a propulsor characteristic, and non-transitory computer-readable storage media, are also disclosed.