Little help or thoughts on SeaRay 340 Sportfisher

Good Boat?

  • Stay far away

    Votes: 5 71.4%
  • Yeah, she will do

    Votes: 2 28.6%
  • I wish I had one!

    Votes: 0 0.0%

  • Total voters
    7
  • Poll closed .

Reefmo

Almost A Member
Nov 28, 2016
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Matt Skogmo
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Trout Sniffer - heavily customized 18.5 tracker targa
Hey all,
So my uncle who lives in central florida has put his Sea Ray 340SF up for sale. They dont go for much, and he would give me a good deal.

My question to you BDers is this... what do you know about the larger Sea Ray boats?

My wife and I have been window shopping for quite some time for a larger boat -- our intent is to be a truly workable hybrid between a nice cabin cruiser and a good fisher. For example, something like a larger model seaswirl would do the job... you get the deal -- family of 4 taking fishing vacations. Boat instead of motorhome.

1987 SeaRay 340 SF
She is 34 LOA,
11'11" beam
Twin inboard gas
Flybridge
Twin 350 crusader motors (stock) 240 HP each Approx 500 hours each
Not too worried bout motors since my uncle wrenched for offshore racing teams... loves motors etc.
Past 8 years in fresh. Unsure before that.
yadda yadda

Let me know your opinion!

Matt
 
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MYNomad

Heading South
Dec 12, 2007
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Rick
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Yes
That is a big (heavy) boat to be running gas engines, but what you save on the cost of a diesel boat will more than offset increased fuel costs (gas costs more and you will burn more of it). The big problem will be range. Even a trip to SCI will be a challenge, I suspect.
 
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Reefmo

Almost A Member
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Matt Skogmo
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Trout Sniffer - heavily customized 18.5 tracker targa
That is a big (heavy) boat to be running gas engines, but what you save on the cost of a diesel boat will more than offset increased fuel costs (gas costs more and you will burn more of it). The big problem will be range. Even a trip to SCI will be a challenge, I suspect.

She has 204 gallon gas capacity. I am estimating 2mpg?
 
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MYNomad

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Yes
She has 204 gallon gas capacity. I am estimating 2mpg?
It will depend alot on speed, and my guess is that at cruising speed (18 - 20 knots?), you will be burning 40 gph, producing 200 hp per engine. If you slow way down to 3/4 of max displacement speed, you may see 1.5 (nautical) mpg, slower still and you may get to 2 mpg. But that boat's length at the water line is probably 30', so its max displacement speed is about 7.4 knots, and efficient displacement will be 5.5 knots. And if you want to troll at 8 knots, it is going to be very inefficient.
Obviously, I could be way wrong, but you should confirm fuel consumption at various speeds (and not in the harbor -- go a few miles offshore in our typical chop and worse).
 
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Capt.C.Delany

The only fishing I do is trolling the Internet
  • Jun 22, 2014
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    No Grave But the Sea
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    Hugh Jassole / The Porcelain Punisher
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    Paddy Wagon 24' Skippy
    Also factor in the cost to get it out here. I have never had a boat shipped across the country but I would imagine it would cost quite a bit more to ship this boat than shipping a smaller boat like a Parker or something. The reason I say that is not only because of the weight but also the route planning and logistics of bridge clearances etc... a smaller boat a guy can just hook up his 3/4 or 1 ton pick up truck and away he goes.

    Than again I could be completely wrong, never done it.
     
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    The Right Kind

    Slave to a Boat
  • Jul 9, 2003
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    Gary
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    The Right Kind - 31' Cabo Express
    IMO...old and under powered.
    Otherwise it could be a good opportunity to get the feel of a bigger boat at a good price. Have you ridden in this boat before?
     
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    Reefmo

    Almost A Member
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    Matt Skogmo
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    IMO...old and under powered.
    Otherwise it could be a good opportunity to get the feel of a bigger boat at a good price. Have you ridden in this boat before?

    Not yet. I'd fly out and spend a week with my uncle before purchase... but the price is the real deal.
     
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    Reefmo

    Almost A Member
    Nov 28, 2016
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    Matt Skogmo
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    Trout Sniffer - heavily customized 18.5 tracker targa
    Also factor in the cost to get it out here. I have never had a boat shipped across the country but I would imagine it would cost quite a bit more to ship this boat than shipping a smaller boat like a Parker or something. The reason I say that is not only because of the weight but also the route planning and logistics of bridge clearances etc... a smaller boat a guy can just hook up his 3/4 or 1 ton pick up truck and away he goes.

    Than again I could be completely wrong, never done it.


    Right now online estimates are anywhere from 4k to 7k -- which might easily be the deal killer.
     
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    fishboy93

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    Jul 25, 2012
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    Ryan
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    It floats
    Save yourself the shipping and maintenance costs and find something with diesels out here in that size. You’ll never wanna take it out when you can barely get to cat and back without needing fuel.
     
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    Reefmo

    Almost A Member
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    Save yourself the shipping and maintenance costs and find something with diesels out here in that size. You’ll never wanna take it out when you can barely get to cat and back without needing fuel.
    Good advice.
     
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    MYNomad

    Heading South
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    Save yourself the shipping and maintenance costs and find something with diesels out here in that size. You’ll never wanna take it out when you can barely get to cat and back without needing fuel.
    And you certainly won't want to buy fuel at Cat. And I agree about it being under powered, but more power would just make the fuel problem worse. You can always go with a fuel bladder or two, and with diesel, that would be OK, but I question the safety of carrying gas that way (especially if you are heading offshore). The only way that boat works, IMO, is at very low speed. If you can get 1.5 nmpg at trolling speed, that will give you acceptable range for good local fishing appropriate for that boat. If you are content to stick near shore, a center console with outboards is probably a better way to go.
     
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    sixty

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    Jul 12, 2005
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    Corey
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    Hatteras 36 "El Dorado", Hatteras 60 "Reel Action"
    With 200 gallons, range will be very limited. My guess is you will be most efficient at 6kts and you would see about 1.5nmpg best case. Would be a great inshore boat but offshore will be very limited.
     
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    Reefmo

    Almost A Member
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    Matt Skogmo
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    Thanks gang. I am gonna pass on this one. Much appreciated!!
     
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    Kapdan

    Kaptain
    Jul 25, 2004
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    Name
    Dan
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    34 Pursuit "Kap Dan Du"
    A friend had a 34' Sea Ray Sedan Bridge with twin 350 HP / 454's he kept in San Diego. If he went to Catalina, he had to stop in Dana Point for fuel. Both ways ...
    kapdan
     
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    MYNomad

    Heading South
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    Yes
    maybe 1mpg at cruise if you're very, very lucky....... run forest, run!

    Here is my calculation:
    An efficient gas engine can requires 1 gallon of gas for every 10 horsepower that are produced for an hour. At cruise, these 240 hp motors are probably putting out 200 hp each, 400 hp combined, for total fuel burn of 40 gallons per hour. In order for that rate of burn to equal 1 mile per gallon, the boat will have to be cruising at 40 (nautical?) miles per hour. Very, very unlikely, especially given the relatively low horsepower. I would guess 20 knots, best case (given the size of the boat, inboards, and relatively low horsepower). If it is burning 40 gph, and going 20 knots, it is getting 1/2 nmpg. That may be a little low (maybe the boat goes 25 knots and needs only 360 hp to do so, in which case the miles JUMPS up to 0.69 nmpg), but I would bet the actual efficiency is much closer to 1/2 nmpg than to 1. So like you say, very, very lucky.
     
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    MATTANZA

    old man of the sea, in training.
    Aug 23, 2004
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    Here is my calculation:
    An efficient gas engine can requires 1 gallon of gas for every 10 horsepower that are produced for an hour. At cruise, these 240 hp motors are probably putting out 200 hp each, 400 hp combined, for total fuel burn of 40 gallons per hour. In order for that rate of burn to equal 1 mile per gallon, the boat will have to be cruising at 40 (nautical?) miles per hour. Very, very unlikely, especially given the relatively low horsepower. I would guess 20 knots, best case (given the size of the boat, inboards, and relatively low horsepower). If it is burning 40 gph, and going 20 knots, it is getting 1/2 nmpg. That may be a little low (maybe the boat goes 25 knots and needs only 360 hp to do so, in which case the miles JUMPS up to 0.69 nmpg), but I would bet the actual efficiency is much closer to 1/2 nmpg than to 1. So like you say, very, very lucky.
    I was rounding up , lol.
     
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    Reefmo

    Almost A Member
    Nov 28, 2016
    246
    370
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    North OC
    Name
    Matt Skogmo
    Boat
    Trout Sniffer - heavily customized 18.5 tracker targa
    Here is my calculation:
    An efficient gas engine can requires 1 gallon of gas for every 10 horsepower that are produced for an hour. At cruise, these 240 hp motors are probably putting out 200 hp each, 400 hp combined, for total fuel burn of 40 gallons per hour. In order for that rate of burn to equal 1 mile per gallon, the boat will have to be cruising at 40 (nautical?) miles per hour. Very, very unlikely, especially given the relatively low horsepower. I would guess 20 knots, best case (given the size of the boat, inboards, and relatively low horsepower). If it is burning 40 gph, and going 20 knots, it is getting 1/2 nmpg. That may be a little low (maybe the boat goes 25 knots and needs only 360 hp to do so, in which case the miles JUMPS up to 0.69 nmpg), but I would bet the actual efficiency is much closer to 1/2 nmpg than to 1. So like you say, very, very lucky.
    Thanks for "showing the work" like in highschool. As an engineer, I really appreciate this.
     
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