On Wed, 28 Mar 2007 15:13:47 -0400, Jeff wrote:

The engines and performance is no problem, at 5 knots the boat is only
being pushed to half of hull speed,

Catamarrans do not have a hull speed in a conventional sense because
of the long narrow shape, and are thus easily driven in flat water
conditions. The only way they could run at night however is to have a
large power surplus during the day which seems unlikely in typical
ocean conditions.