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From: Royer, Doug (no email)
Date: Tue Feb 01 2005 - 18:32:42 EST
Regarding:
w = pld displacement
W = new displacement
Can you further expound on the meaning of the above?
w = old displacement
Say the vessel,laden,displaces 20,000 tons. The transit is from port A to
port B. While in port B the vessel unloads cargo. Say the off loaded cargo
was 5,000 tons. The vessel now displaces roughly 5,000 tons less water.
W = new displacement
20,000 tons old displacement minus the offloaded cargo's displacement.
20,000 tons - 5,000 tons = 15,000 tons = new displacement.
If the sea conditions are such when transiting from port B to another port
as the conditions were entering port B and turns are made for the same
speed the displacement procedure is accurate for calculating fuel
consumption.
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