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Pivot point when moving ahead with constant speed

Q. Explain briefly the following: – Pivot point when moving ahead with constant speed.

Ans:-

Pivot point when moving ahead with constant speed
Pivot point when moving ahead with constant speed

Pivot when moving ahead with constant speed:- There are two forces to deal with, the forward momentum of the vessel and the longitudinal resistance of the water ahead of the vessel. For a vessel to move at uniform speed, a proportion of the applied power is spent in overcoming the longitudinal resistance of the water. Initially, the pivot point moves right forward, then, as the forward momentum matches the water resistance, the pivot point will move aft to approximately 1/8 of the waterline length from forward. Once the water resistance has been overcome, the pivot point will move further aft and when at a uniform speed, will settle at a position, approximately ΒΌ of the waterline length from forward.