🛶 Oared Longboat: Hull Speed, Oar Power, Friction and Wave-Making Drag (2D top view)

Top view of a long narrow boat rowed by a crew of oars, with the length of its own bow wave drawn beside the hull. Set length, displacement, draught, number of rowers, power per rower, oar efficiency and stroke rate, and watch the speed pulse with each stroke, the drag split between friction and waves, and the hull speed. Five numerical checks.