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Trim Effect - Coggle Diagram
Trim Effect
Ballast Ship
High wetted surface per unit of displacement
Increased frictional resistance
Reduced residuary resistance
Total resistance Lower
Total resistance per unit of displacement Higher
Shall trim by stern
guarantee propeller immersed
Loaded Ship
Increase draft aft
stern fuller
Increase in
Form resistance
Separation resistance
Fn > 0,3
Bow raises
Stern sinks
Due to
change in pressure distribution
according to speed
Merchant Ships
Trim by stern
Increase in resistance
at low speeds
Decrease in resistance
at high speeds
Low speeds
Trim by bow
Change in resistance
in large displacement ship
Very Small