From: "Jim Russell" <jimrussel@sympatico.ca> To: "'Power Catamaran List'" <power-catamaran@lists.samurai.com> Subject: RE: [PCW] Air cushion between catamaran hulls Date: Wed, 4 Mar 2009 14:37:21 -0500 Cats are seen with steps. Problem is that most "steps" are not "designed" but rather copied from other hulls. Step is only optimum at one velocity, and thus is very tricky to design such that it will not be a detriment at other velocities. Properly designed can be helpful at particular speed transitions. Jim Russell, P.Eng. AeroMarine Research http://www.aeromarineresearch.com -- The reason your post was delayed is that you're are not subscribed to Power Catamaran List with the email address you're using above. To subscribe, go to <http://www.trawlersandtrawlering.com/forums/powercatamaranli.html> and you're posts will go directly to the list without delay.