Fn > 1: Displacement effects on performance and maneuvering?

[oldbitd]

Assuming:

1. Planing speeds
2. Infinite power

I am researching high speed vessels and maneuvering capabilities and I am looking for advice/previous research on how increasing displacement effects a planing hull. I am particularly interested in Beam/Disp^(1/3) effects on planing vessels, ie

At constant Fn number, how does the same vessel with a high Beam Disp ratio perform relative to a vessel with a low Beam Disp Ratio?

I assume higher trim, deeper draft, but any more specifics especially regarding steady turning. All help is greatly appreciated.

[Alik]

These diagrams show effect of chine beam Bc on resistance R, for two displacements, for 10m powerboat.

[jehardiman]

Get a copy of the Series 62 and Series 65 planing data (Most of it is condensed in Principles of Naval Architecture). FWIW, I really don't see how normalizing data on Beam/Disp^(1/3) will be of any use. With a constant displacement, varying the beam also requres a change in deadrise, length, or both; and those two factors will be of more influence than beam. Especially on maneuvering.

[oldbitd]

Alik, can you tell me the source of this graph, it is useful. Cheers

[Alik]

Originally Posted by oldbitd

Alik, can you tell me the source of this graph, it is useful. Cheers

This is pre-design study for one of our designs. Calculation done by Savitsky method.