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From: (no name) (no email)
Date: Sun Feb 10 2008 - 08:24:25 EST
Gotta love those low speed Gardner engines! But they were about 40% more
than a comparable 1800RPM engine 5 years ago.
Rock's figures are very close to ours, and so I think 125-145 is about
right. Seahorse is 53 on deck x 15.5 beam x 7.5 draft with a cutaway full
keel; a
sailboat hull. Despite having more wetted surface itbs likely she is a bit
more easily driven than Cygnus. The displacement was given as 75000, but I
believe she is closer to 80000 b it seems TraveLift operators always have
an
excuse for not quoting a number.
The main engine is a Lugger 668D rated at 130BHP intermittent at 2400 RPM.
The continuous rating is 105BHP@ 2200. It swings a Michigan Workhorse 30X20 4
blade through a Twin Disc MG 5050 3:1 gear. We cruise at 7.5 knots at 1800RPM
and burn 2.0 - 2.5GPH at this speed in normal conditions. Maximum speed is 9
knots at 2300.
Regards,
John
"Seahorse"
I have a little different slant on this. My 44' Cygnus weighs in at 86,000
(half fuel) and we have a Gardner 8lxb, 170 hp @ 1150 rpm w/ an MG-509
2.91:1
gear, turning a 42" 4-bladed prop. The Cygnus is a true trawler, full
bilges, 7.5' draft and a 17' beam. On our trip from South Carolina to
Bermuda and back this past May, we averaged 7.6 kts and burned 3.2 gallons
per hour for 260 hrs per my floscan 7500. If I want to increase speed to 9
kts, my fuel burn increases to 6 gph (hardly worth the expense). Thirty
years ago, I delivered a 61' Cammenga trawler from Europe to Florida. It
was in the 80K# range and had a Gardner 6LX (127 hp) and we averaged over 8
kts @ 3 gph. In other words, I believe 145hp will propel the boat in
question quite well.
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