Enter both values LWL and Desired speed. These are used in Wymans formula to calculate
estimated power required for the vessel.
This is the maximum speed you require. Note, there are other factors, such as safety,
not covered by this calculation that would limit desired speed. Contact the designer
manufacturer to find out what the vessels maximum
SL Ratio is.
The results show the estimated required power at the shaft. Note that engines are
rated differently for inboard diesels. For example SHP is approximately 95% of BHP
due to losses in the transmission, to ancillaries etc.
This shows the SHP required for a % of hull speed.