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Old 08-04-2017, 16:10   #1
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Kit_L's Avatar

Join Date: Nov 2015
Location: Shellharbour Marina and points North and South
Boat: 40' custom catamaran
Posts: 152
Dominator 36' hulls vs 38'

I have been looking at a friend's 36 (on paper specs; may do marina visit this week); his has twin Detroit Diesel 250s. But, while looking at the boat sale sites, I see a lot of 38s for sale, too.

Does anyone know if the 38s are simply stretched 36s (in the rear deck area) or are all dimensions longer and wider (so main cabin larger)? I did a search, but only came up with boats for sale on the first page!

And (the big question), would the two extra feet have any appreciable benefits for seaworthiness? We live on the South Coast, and when we get a larger boat, want to go to Sydney (Pittwater, and harbour) from time to time, as well as Jervis Bay and points south—so we are always thinking worst-case scenario, weather-wise.

There have been a few threads recently on fuel consumption; the 36 we are looking at cruises at 16 knots @ 2,200-2,300 rpm, and at that speed uses around 55-60 lph total both sides. If we are not in a hurry, at about 1,200 rpm it will do about 9 knots and use 10-15 lph total, apparently. The Detroits are normally aspirated, so I do not see any downside to running at 1,200 rpm on a trip. Any thoughts?

And these engines have a bit over 2,000 hours on them. Anything I should look out for?
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