One of the boats I'm looking at for our next "home on the water" is a commercial
ex-government boat. It is 57' long, 15' beam and 40 tons. It's a MONSTER, which is great because we can live out at anchor
year round with this one even in the most harsh Maine
My question is regarding powering this vessel. It's basically a bare hull
. No power, no systems, nothing really to speak of. I have to install it all.
I wanted to see if I could solicit input on this possible project
. I'm not 100% sure I'm going to get this boat, but this thread will help with that decision.
First, it's starting from scratch. The engine
was removed. There are controls and a wheelhouse, but no engine
. Also, the "living space" is already constructed and was part of the vessel when it was built.
A good dollar savings and also good for stabilty. No added top-heavy weight.
I am looking at a Detroit Diesel
6-71 @ 250hp for $5500. I hope to achieve 8 knots guzzling fuel
, but back off to 6-7 knots to save fuel
. Is this realistic? Is it the right size engine? I'm going by a book I have that specifies engine size as a function of tonnage and desired top speed. Any diesel
specialists that are on this forum are welcome to solicit me for a project
here. The boat is in VA. I need to install the engine and I would imagine it's going to be tricky with the crane, mounts, etc...
What about an electric
system? I have to get a genset and HUGE battery
bank to be able to put out our much larger power requirements. Some things we want to do living at anchor
are: microwave leftovers from batts, run a small 750 watt heater for 15 mins from batts, have a semi-normal refrigerator
, etc... some upgrades in convenience since we are here to work and work hard. No play, no cruising. Since we have to generate massive power anyway, I was thinking why not go fully electric
(with genset as long range cruising engergy source)? What size electric motor
would be correct to propel this vessel? Does anyone know?
Any other inputs as to setting up this vessel's propulsion
system would be very welcome. I'm dabbling in an area I have little if any clue and need to learn pretty fast. We are expecting a closing soon on the Gulfstar
and a purchase
of the next vessel in fairly short order.