[PCW] a question of weight

[mrchuckjohnson@aol.com]

Bill,

Since you so clearly identified pressure drag
would you take a crack at identifying
the bow wake, stern wake and the interference between them.
You treat them as a given, please identify their origin, in your 
simplified
and clear manner.

Also is there any meaning to having the catamaran hulls far enough 
apart so that the bow waves do
not interfere with each other.

Chuck

-----Original Message-----
From: wefleenor@ucdavis.edu
To: power-catamaran@lists.samurai.com
Sent: Mon, 4 Sep 2006 8:33 PM
Subject: [PCW] a question of weight

The next force is a pressure drag - often called form drag force since 
it is
strongly dependent on the shape or form of the hull.  Simply put it is 
the
pressure drag caused by pushing the water aside.

The final drag force is that required to produce the various wakes the 
boat
will make while moving through the water.  The interference of the bow 
wake
with the stern wake is what ultimately limits the speed of a
full-displacement boat.

Bill Fleenor



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