I cruise a 26000# Tolly w/twin 454s. It requires 2550 rpm to get it on a plane @ 11.5 kts. You would defintely be over taxing a single to push 26000# at 12 kts. Alternatively, I can run the engines at 1600 rpm and achieve 8 kts. far more efficiently. Trawler speeds are generally in the 8 to 10 knot arena. This would be close to your hull speed and offer you significantly better mileage. jps >From: Daniel Chapman <dchapman61447@yahoo.com>(by way of Georgs >Kolesnikovs) >To: Trawler World List <trawler-world-list@samurai.com> >Subject: TWL: Single vs. twin engines - fuel economy >Date: Thu, 30 Aug 2001 09:20:14 -0400 > >While surfing the Trawler world Archives I found >references to Single vs Twin Diesel Engines. I am >hoping you can shed light on the other side of the >coin... Single vs twin Gas. I plan to purchase a >midrange sedan cruiser with twin gas engines (Ugh!) >The reason for that is because the model I like >doesn't come with anything else. It's twin gas or look >for some other type boat. I eventually realized that >my objection to the twin gas boats was more of an >objection to TWIN gas not just gas. Or to put it >another way. A single gas engine at 270 hp pushing a >45' 26,000 lb vessel would offer quite acceptable >performance (from a trawler perspective). I would be >content to cruise at 12-14Kts with one gas engine >enjoying the benefits of ease of fueling, low >operating cost, low noise and greater fuel efficiency >of just one engine. Here's the kicker...When I talk to >brokers about this they just say WHAT! You would want >to run a twin gas boat on just one engine? Are you >crazy? Maybe I am supposed to want to drive a boat at >30Kts. Maybe I am supposed to want to burn 20+ gallons >of gas per hour. Am I crazy for wanting a fuel >efficient low-moderate speed single gas cruiser? >Please advise if you can. > >-Dan > > dchapman61447@yahoo.com _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp