residuary resistance

…lumped into a single “residuary resistance,” especially when resistance measurements are extrapolated from model testing. Wave making is usually by far the larger component of residuary resistance; it is therefore given more attention in research and in the designing of a hull. Indeed, wave making increases so rapidly as…

…called what was left the residuary resistance. For corresponding ship and model speeds, where the Froude numbers V/(gL)^0.5 (V is the speed, g the acceleration of gravity, and L the waterline length) were the same, he extrapolated the residuary resistance on the basis that this resistance per ton of displacement…