[PCW] Fuel consumption

[D C *Mac* Macdonald]

I'd guess it is also the speed just below which
a planing hull goes "over the hump" and goes
onto plane (drops the bow back down).

D C "Mac" Macdonald
m/v Another Adventure
Grand Lake - Oklahoma



----Original Message Follows----
From: "Malcolm Tennant" <malcolm@tennantdesign.co.nz>
Reply-To: malcolm@tennantdesign.co.nz,Power Catamaran List 
<power-catamaran@lists.samurai.com>
To: "Power Catamaran List" <power-catamaran@lists.samurai.com>
Subject: Re: [PCW] Fuel consumption
Date: Thu, 12 Oct 2006 08:50:06 +1300

"Hump speed" is a colloquial way of refering to the point of maximum
resistance on a hulls resistance curve. For a classic displacement hull it
is the maximum hull speed and corresponds to a Froude number of approx 0.4.

Malcolm Tennant.

Malcolm Tennant Multihull Design Ltd
PO Box 60513 Titirangi,
Waitakere 0642
NEW ZEALAND