FF
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See if you can locate a Sport fish , made for comfortable ride at speed, that has an interior you can live with.
10-12knt trawler? 40'
- Thread starter JoePNW
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South of Heaven
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- Slow Lane
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- 2005 Silverton 35 Motoryacht
rslifkin
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That's definitely an option, as are any of the more capable motoryacht types. The biggest challenge with the budget given is finding something in good shape, with a good layout, and with diesels. Gassers would work in that size range, but the boat would have to be really cheap to make up for the much higher fuel burn (figure double on plane, 2.5 times at low speed compared to diesels in the same boat).
WD40
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- Otter
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- 1985 President Sundeck 41
We've got a 41' President similar to Comodave's.
General cruise is 8-10 knots at 4-5 gph (2kmpg)
Trying to push above that gets minimal increase in speed, and exponential increase in fuel consumption.
Power: Twin Perkins 6.354M 135 horsepower naturally aspirated.
We time all our trips with the current.
Can easily hit 12-14 knots if we're going in the right direction, and still at the miserly 4-5gph / 1,700-1,800 rpm.
General cruise is 8-10 knots at 4-5 gph (2kmpg)
Trying to push above that gets minimal increase in speed, and exponential increase in fuel consumption.
Power: Twin Perkins 6.354M 135 horsepower naturally aspirated.
We time all our trips with the current.
Can easily hit 12-14 knots if we're going in the right direction, and still at the miserly 4-5gph / 1,700-1,800 rpm.
I think that one has an offer on it , but I'll keep an eye on it .
2 kmpg would be great. Those perkins are pretty bulletproof. Hows the parts availability
and knowledgeable service?
WD40
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- Otter
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- 1985 President Sundeck 41
Haven't needed any major parts yet, but what we've needed has been readily available.
That, and the previous owner left several spares on board for when the time comes.
Water pump, injectors, alternator, gaskets, thermostats...none of which have been needed since we're at 3,800 hours and counting.
We've only been hauled once here since we bought Otter and had the transmissions refurbished and heat exchangers rodded out by a local (La Conner Maritime) marine repair service.
I should mention the emphasis of timing our trips with the current.
We're easily down around 6-7 knots if we're bucking it the whole way.
The above is remedied with a bit of a push forward on the throttles, but then we're up on the fuel consumption proportionally.
That, and the previous owner left several spares on board for when the time comes.
Water pump, injectors, alternator, gaskets, thermostats...none of which have been needed since we're at 3,800 hours and counting.
We've only been hauled once here since we bought Otter and had the transmissions refurbished and heat exchangers rodded out by a local (La Conner Maritime) marine repair service.
I should mention the emphasis of timing our trips with the current.
We're easily down around 6-7 knots if we're bucking it the whole way.
The above is remedied with a bit of a push forward on the throttles, but then we're up on the fuel consumption proportionally.
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$118K USD / 15-16 knot capable / reasonable economic fuel burn at hull speeds / larger than a 32,36,39 Bayliner.....
= 4588 Bayliner
Is this much under $150K Canadian?
kimdabe
Member
My Mainship 400 can do 12Kts at 2400 rpm but cruising is typically 8-9 kts. Burn about 5gal / hr at 8kts but don't want to even know what WOT is burning. Mainship 400 goes on the market on Monday....time for a downsize!
Where is ot located? And what year is it?
Even hen it should be 16+ KTs to be fully on plane or below 9
skipperguy
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my 2 cents
our 40+2 ocean yachts trawler cruised at an honest 10 kts at 2,000 rpm on a pair of perkins 160hp turbo diesels. rare boat, but really fun, there must be others out there which will perform similarly
our 40+2 ocean yachts trawler cruised at an honest 10 kts at 2,000 rpm on a pair of perkins 160hp turbo diesels. rare boat, but really fun, there must be others out there which will perform similarly
Nomad Willy
Guru
40' 10-12knts economical cruise speed..
Any planing hull will not be efficient at that speed.
I think all the boats mentioned thus far have a planing hull w a big keel. Their angle of attack trimmed weight wise will be too high. It could be done w a straight run aft but only w a very light and narrow boat.
A SD hull designed for the speed required is the only hull that will do what the OP wants. The amount of rocker to the bottom of the hull and it’s location (fore-aft) is the key. I think all the boats mentioned have no rocker. I know the NT 32 has some rocker and perhaps the larger ones do too but I don’t know.
It’s easy to find the light boat part. Find that first then look for the correct amount of rocker ... the convexness of the hull lines fore and aft.
Also any boat w twin FL’s or equiv Perkins will burn a minimum of 5gph. Unless your into underloading and you won’t get 12 knots underloaded.
That’s my scope on it and could be wrong (of course) but not by much.
Any planing hull will not be efficient at that speed.
I think all the boats mentioned thus far have a planing hull w a big keel. Their angle of attack trimmed weight wise will be too high. It could be done w a straight run aft but only w a very light and narrow boat.
A SD hull designed for the speed required is the only hull that will do what the OP wants. The amount of rocker to the bottom of the hull and it’s location (fore-aft) is the key. I think all the boats mentioned have no rocker. I know the NT 32 has some rocker and perhaps the larger ones do too but I don’t know.
It’s easy to find the light boat part. Find that first then look for the correct amount of rocker ... the convexness of the hull lines fore and aft.
Also any boat w twin FL’s or equiv Perkins will burn a minimum of 5gph. Unless your into underloading and you won’t get 12 knots underloaded.
That’s my scope on it and could be wrong (of course) but not by much.
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Thats a nice boat but I'm in Vancouver BC. It would be a fun trip around though!
SteveK
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Joe, that is a nice looking boat. Richmond? Must have just come on market or you would have found it sooner. I would not be disappointed at 2.5 GPH per engine @ 8 knots
(Didn't see the OP's last post until after I posted this. Oh well...never mind).
The Ocean Alexander 440 has an Ed Monk Jr. hull that he characterizes as Semi Displacement. They're in the range of $150K these days. Ours makes 17+ knots flat out with a fairly heavy dinghy and full fuel load pushing down at the stern (takes trim tab to get it solidly on "semi-plane" which is right about 12 Kts). Roughly 2200 engine rpm and total fuel burn about 9.5 gph. Roughly 200 total HP required per the prop charts for the engines. Fuel burn at 8.5knots is about 5 gph.
Here's a photo of the bottom. Difficult to see with the flat black paint,but the hull does curve gently upward toward the stern from around the midships point. It also has the double chine cutout which reduces wetted surface as the hull lifts, and has the additional effect of a"soft chine". This boat was originally imported by Irwin Yachts in Portland and later arrived in the Great Lakes via truck.
The Ocean Alexander 440 has an Ed Monk Jr. hull that he characterizes as Semi Displacement. They're in the range of $150K these days. Ours makes 17+ knots flat out with a fairly heavy dinghy and full fuel load pushing down at the stern (takes trim tab to get it solidly on "semi-plane" which is right about 12 Kts). Roughly 2200 engine rpm and total fuel burn about 9.5 gph. Roughly 200 total HP required per the prop charts for the engines. Fuel burn at 8.5knots is about 5 gph.
Here's a photo of the bottom. Difficult to see with the flat black paint,but the hull does curve gently upward toward the stern from around the midships point. It also has the double chine cutout which reduces wetted surface as the hull lifts, and has the additional effect of a"soft chine". This boat was originally imported by Irwin Yachts in Portland and later arrived in the Great Lakes via truck.
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IRENE
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