Exercise 1 (Resistance+Propulsion) - Elsevier
A 6 m model of a 180 m long ship is towed in a model basin at a speed of 1.61 m/
s. The towing pull is 20 N. The wetted surface of the model is 4 m2. Estimate the
corresponding speed for the ship in knots and the effective power PE, assuming
resistance coefficients to be independent of scale for simplicity. Solution.