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keisanHigh-precision calculations for everyday life and work

Small Vessels: Maximum Speed

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Calculation of Maximum Speed for Small Vessels
Small Vessel Safety Regulations—Chapter 1 of the Detailed Rules
Length of a Ship
m,L
Ship's width
m,B
Ship's draft
m,D
Central Freeboard
m,F
Maximum Capacity
People,N
Freight
ton,W
Output
P.S.
Maximum Speed Kt,V
d = D − (F − (0.075 * N + W) / (0.78 * L * B)); Draft (vertical distance from the water surface at the midpoint of the length to the top of the keel)
H = 0.5 * L * B * d; Calculate the submerged volume.
V = 0.755 * (L^0.5) * ((PS/H)^0.623); Speed in knots

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