Trawler Ideas

Discussion in 'Powerboats' started by Fish Catcher, Nov 22, 2014.

  1. Fish Catcher
    Joined: Oct 2014
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    Fish Catcher Junior Member

    Been searching and researching for quite some time now for a good live aboard trawler / tug design boat with the purpose of doing the great loop.

    We like the raised pilot house type especially if there is a state room and half head as well in the pilot house (such as the GH 47)

    Looking for a shallower draft boat ( no more then say 4 foot fully loaded )

    Prefer twins over single screw for engine failure in a crowed canal with comercial vessels baring down on you is not fun with out power.

    Protected walk ways deep enough for safe passage by all.

    Decent size aft deck for fishing

    At least two other state rooms and full heads

    Plenty of space and easy engine access .

    Bigger fuel and water and waste tanks

    Fuel sipper and no more then 50 to 55 foot. Perfertably 50 or under
    Get the idea.....lol
    Got any ideas
    Jim
     
  2. gonzo
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    gonzo Senior Member

    I think that you should start by quantifying what you consider a fuel sipper. That will drive the rest of the design and set the constraints. What is the MPG you want?
     
  3. Fish Catcher
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    Fish Catcher Junior Member

    Well Gonzo I guess liike every one else...LOTS.......just messen....
    I really had not thought about much into the mpg as I have gph. I have seen many which claim 1 to 4 gph and many that I also was interested in which boasted of 5 to 12 and I could get that on a 37 foot alaskan pilot house offshore running twin 150's to 300's. (out boartds)

    For us the boat will be used mostly for cruising at or around 7 to 8 knots more then likely do to cruisding the canals and icw, however I will be wanting to take some ventures out some and do some good ol fishing.

    I have found many that would serve our needs quite well But from the rising and falling of the water levels in the rivers I am concerned with a shallower draft big time.
    Not to mention with so many fuel stops closing or having problems with un-dredged area's I am also concertned with getting hundreds of miles with out runninig out or having extra tanks. ( hence the fuel sipper )

    Found many trawlers which were pretty nice but I just do not like the all open layout from saloon to healm. Perhaps just being to picky but when yopur going to be living in it for years I believe I would want to enjoy the layout too.
    Thaanks for replying and have a great week end
    Jim
     
  4. Steve W
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    Steve W Senior Member

    Would you consider a displacement powercat? You would get a higher cruise speed with smaller engines and less fuel burn, shallower draft. Are you looking to buy a used boat, new boat or custom design/build?

    Steve.
     
  5. Fish Catcher
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    Fish Catcher Junior Member

    Hi Steve,
    Not sure on the cats for I have heard of many problems with alot of the makes in some moderate sea's. However I have checked this one out and thought it looked kind of good.

    http://yachthub.com/list/print_ad.html?de=154040

    As far as new or used or custom, that is the million dollar question. Ity would depend on the condition and updates on a used and new tends tyo have some waranties and custom if done by the right team casn be the best bet.
    Thanks
    Jim
     
  6. Steve W
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    Steve W Senior Member

    Jim, that Peter Brady cat is a great looking boat, and only 80hp a side, that's exactly what i had in mind. Unfortunatly there are very few production ones if any, with that sort of styling.

    Steve.
     
  7. Fish Catcher
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    Fish Catcher Junior Member

    Steve,
    I agree and there are other cats out there that look nice but I do not know that much about them and have read horror stories about many brands not being good in all but perfect sea's.
    Guess I need to research therse a littler more.
    Thanks
    Jim
     
  8. Steve W
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    Steve W Senior Member

    yeah, im not really up to speed on the production models either as few of them appeal to me. I really prefer the custom boats like Peter Bradys with more trawler styling, covered side decks and cockpit, small diesels etc and you really only get these features on custom design/builds. Another Aussie designer that has some nice cats is Col Clifford at Compucraft marine. There was a very nice 42ft compucraft featured in Power cat magazine a few years back with a pair of small yanmar turbo diesels of about 100hp each. What bad stuff have you been reading? Most of the South African power cats get here on their own bottoms, even the 38ft Moorings cats, not many 38ft monohull trawlers would make that trip and would need some kind of stabilizers to do so.

    Steve
     
  9. Fish Catcher
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    Fish Catcher Junior Member

    Not sure exactly at this moment but I remember following a topic in a forum not too long ago andf they were talking about cats. I wasnot real interested so I did not pay too much attention but I do remember out of a hand full of makers listed only a couple got good remarks. Some of them capsided easier and so forth. Not somerthing you want to load your family in and take off for an over a year cruise.

    No matter the bad rap I find many giving the GH 47 I still am drawn to it and I have been talking to many who actually own them and they seem to really like them.
    We were pretty hooked on a new NT 49 and truly liked the layout and cruising capabilities but something inside of me is clawing aty me about it. Maybe being a singler screw I dont know but they are a very well built boat.

    Jim
     
  10. WindRaf
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    WindRaf Senior Member

  11. FAST FRED
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    FAST FRED Senior Member

    Do a sketch to see how all your desirements will fit in just 50 ft.

    For shallow draft the barge like almost flat bottom with chines well immersed is required.

    The loop will go great , bur going to the Bahamas or any other short blue water crossing will require care with the weather window.

    Cats suffer from following the wave surface , giving a rougher ride , a flat barge would magnify this effect.
     
  12. WindRaf
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    WindRaf Senior Member

    [​IMG]

    15, 27 MT (50 ft)
    The catamaran has a width of 5.00 m (16.5 ft). and has poor body frame generation wave.
    Performance will vary from 18 to 24 knots with a total of only 368 kW engine and propulsion classic with 4-blade propellers from 570 mm.
    Possibility of lower power engine, with displacement speed 12 knots
    Other technical features, dip pc0,90 mt. (3 ft), 15 tons displacement., Fuel tanks 2000 lt., Water tanks 500 lt.
    (Cantieri Navali di Brindisi)
     
  13. Steve W
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    Steve W Senior Member

    I have never heard of a displacement power cat capsizing, if anyone can point me to an instance of it happening I would appreciate it. Your requirement of twin screw is one reason why i like the cat platform, the cat lends itself well to this and with the wide hull spacing you get close quarters maneuverability without the need for bow or stern thrusters, the wide spacing pretty much eliminates the transverse rolling so common to monohulls so no need for stabilizers offshore. The one area where I find the cats motion not so comfortable (and this is based only on sailing cat experience) is the jerky motion caused by the huge diagonal stability and rigid structure and I would assume this to also be true with power cats but maybe not, again, if anyone here with actual displacement power cat experience could comment on this it would be helpful. It would be well worthwhile with a power cat and maybe with a twin screw trawler also, if you were planning to do ocean passages, to spring for feathering props so you can run on a single engine offshore for better range.

    Steve.
     
  14. WestVanHan
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    WestVanHan Not a Senior Member

    No mention of amount willing to $pend,but you seem unfazed by the $900k Nordic Tug 49 so I'll take that as the price point.

    There's plenty of really nice and decently capable semi displacement motor yachts out there for $250-400k that get good mpg.

    But,if you are willing to spend $900k on a 50' + boat,fuel and MPG will be among your least financial concerns.

    BTW the NT 49 is semi displacement....
     

  15. Steve W
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    Steve W Senior Member

    Fuel economy means different things to different people, i guess. Even smallish 34 to 40ft full displacement trawlers with a single 6 cyl na diesel consume 3-4 gph at cruise which is only a couple of mpg and some think this is good. I would consider that unacceptable.
     
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