Exam Question
(a) List the components of residual resistance.
(b) The following data are available for a twin-screw vessel:
V (knots) | 15 | 16 | 17 | 18 |
RP (kW) | 3000 | 3750 | 4700 | 5650 |
QPC | 0.73 | 0.73 | 0.72 | 0.71 |
Calculate the service speed if the brake power for engine is 3500kW. The transmission efficiency loss is 3% and the allowances for weather and appendages 30%. (10)