Does boat lean less when planing?

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In summary, when a boat is stationary and 500kg is added to one side, the boat will lean 15 degrees. However, when the boat is planing at high speed, it is harder to lean due to the force of hydrodynamic lift and the deeper submersion on one side. This can potentially reduce the angle of lean, but the exact amount and force involved would need to be examined further.
  • #1
xyz
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When boat is stay in place,put on one side 500kg,boat will lean 15 degrees...

If now we go planing with this boat, will boat lean less then 15 degrees or equal?
If less,what is force which reduce lean angle?
 
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  • #2
xyz said:
When boat is stay in place,put on one side 500kg,boat will lean 15 degrees...

If now we go planing with this boat, will boat lean less then 15 degrees or equal?
If less,what is force which reduce lean angle?
What do you think and why?
 
  • #3
phinds said:
What do you think and why?
My intuition tells that boat is harder to lean when boat is moving but there must be some force that act like righting moment..

Disbalnce in pressure distribution on bottom boat?

(I think you can stand on edge on jet ski when planing at high speed and he will not capsize)
 
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  • #4
At higher speeds hydrodynamic lift may be different on left and right sides of the hull because of the different depths of submersion . Deeper submersion could mean more lift and therefore more force tending to reduce the angle of lean . No guarantees though - the actual details of the problem would need to be looked at carefully .
 

1. How does a boat's design affect its tendency to lean when planing?

The shape and weight distribution of a boat can greatly impact its stability when planing. Boats with a wider beam and a flat or V-shaped hull tend to have less lean while planing compared to boats with a narrow beam and a rounder hull.

2. How does speed affect a boat's leaning behavior when planing?

The speed at which a boat is traveling can also affect its tendency to lean when planing. Generally, the faster a boat goes, the more stable it becomes due to the lift generated by the planing surface pushing against the water.

3. What role does the water conditions play in a boat's leaning behavior when planing?

The water conditions, such as waves or choppy water, can greatly impact a boat's stability when planing. In rougher waters, a boat may experience more leaning due to the uneven forces acting on the hull.

4. Is there a difference in lean between different types of boats when planing?

Yes, different types of boats may have varying degrees of lean when planing. For example, a displacement hull boat may experience more lean compared to a planing hull boat due to the different ways they interact with the water.

5. Can modifications be made to a boat to reduce its lean when planing?

Yes, there are various modifications that can be made to a boat to improve its stability when planing. These can include adding ballast or trim tabs, adjusting the trim, or altering the hull shape. However, it is important to consult a professional and make any modifications carefully to ensure the safety and performance of the boat.

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