Guide to building 18 foot steel centerconsole

Discussion in 'Boat Design' started by Inspiro, Sep 20, 2011.

  1. Inspiro
    Joined: Sep 2011
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    Location: Cairo, Egypt

    Inspiro Junior Member

    Dear all
    I’m new to this forum
    I’m an automotive engineer, I live in Egypt, , I love sea fishing in the red sea, and off course boats, but I’m kind of novice in that field with so much to learn
    I would love to have my own boat for fishing, a boat that is averagely fast to move quickly from one fishing point to another
    In Egypt, fishing boats available for rent are heavy, under powered displacement boats built mostly from relatively cheap wood
    Fiberglass boats from well known builders are very expensive and most availiablecdo not take the fishing into account, less expensive pre-owned fishing boats are almost non-existent
    So I decided to build my own, I found this forum and I feel that I came to a the best place ever, so many people passionate about boat building and have a wealth of information.

    I seek your kind advice based on the following vision I have in mind, please correct me if you see I’m off track:
    I’m on a very tight budget,
    Center console style
    The boat will be used offshore, no shallows at all,
    Boat will be used for deep sea fishing, some trolling
    Boat is to have room for 3/4 fishermen and tackle
    Boat length around 18 feet to be easily towed by a small SUV
    wind speeds around 15 knots is normal(waves 3-5 feet of height), boat need to absorb these waves comfortably cruising at 20-25 mph, while being very stable when not in motion, so that we can comfortably fish in these not so ideal wind conditions
    Top speed in the high thirties mph is more than enough
    Boat will be used 2-3 times/month, mostly towed back and washed after every fishing day.
    No live-wells needed
    Boat will be equipped with a portable head and portable coolers
    Preferred building material is steel (cheapest and easy to find good welders around)
    Weight is to be kept to minimum for easy towing, getting into and out of the sea with minimum help, to achieve good performance without need for big power
    Outboard engine(preferably not more than 100 hp to minimize cost)


    It would be great if you can recommend some boat building steel plans/kits, with proven performance that I can use to achieve my goal

    Thanks and best regards
    Mahmoud Salem
     
  2. Mr Efficiency
    Joined: Oct 2010
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    Location: Australia

    Mr Efficiency Senior Member

    Protecting it from rust will be a full-time job, especially as you will be restricted to thin gauge material to keep the weight within reasonable limits, so unless you are vigilant perforations may appear sooner rather than later.
     
  3. Inspiro
    Joined: Sep 2011
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    Location: Cairo, Egypt

    Inspiro Junior Member

    Dear Mr. Efficiency
    Steel vs Aluminum, a very hot topic discussed hundreds of times
    I may eventually switch to Aluminum especially because most of the metal plans for this size is in Aluminum, but this will cost much more in material and labour.

    Thanks for your reply
     
  4. Mr Efficiency
    Joined: Oct 2010
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    Location: Australia

    Mr Efficiency Senior Member

    18 foot would be at, or below, the lower limit for steel construction, and only because you need a bit of extra thickness above the structural strength requirement to allow for rusting. I guess it is possible if you are prepared to put in the maintenance, and you have a design with no hidden crannies you can't easily access to keep painted. And steel isn't that cheap these days either.
     
  5. Buoyant Marine
    Joined: Sep 2011
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    Location: Sri Lanka

    Buoyant Marine Naval Architects

    Hi Salem,
    Your requirement is interesting and workable. We have a database of this size boats which are using for different purposes. We would like to discuss more with your requirement. Kindly forward your contact details to the following email id.
    md@buoyantmar.com
    Thnks and Regards
    Buoyant Marine Services
     
  6. Inspiro
    Joined: Sep 2011
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    Location: Cairo, Egypt

    Inspiro Junior Member

    To make it easier, I'm looking at plans for a very capable hull(as I mentioned in rough sea and when stationary), I think a modified V with variable deadrise and wide chines will be good)
    I want it as basic as possible(can easily accept something as plain as formosa with non-covered structure rails)
    I might consider building from aluminum
     
  7. Wavewacker
    Joined: Aug 2010
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    Location: Springfield, Mo.

    Wavewacker Senior Member

    Reminds me very much of real estate forums, where someone asks a question like "what should I consider in obtaining an adjustable mortgage?" and then someone posts, "For the best adjustable mortgage contact me at XYZ Mortgage Company" .....

    Interesting and workable? Of course it is! At least steer him to aluminum for that size of a boat....:D
     
  8. Buoyant Marine
    Joined: Sep 2011
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    Location: Sri Lanka

    Buoyant Marine Naval Architects

    Hi Mr. Wavewacker,
    I think u misunderstood the case and equate to a real estate forum. Its better if you could help him rather than talking about Mortgage Companies..:p
     
  9. M.Zouhairy
    Joined: Nov 2014
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    Location: Egypt

    M.Zouhairy New Member

    Dear Mohamed,

    Were you able to find plans matching your requirements ?
    Actually your requirements are exactly matching mine.
     
  10. bajansailor
    Joined: Oct 2007
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    Location: Barbados

    bajansailor Marine Surveyor

    Please do not try to build your proposed boat in steel - the odds are good that it will end in tears, and the cost of the hull is only a fraction of the total cost, so the savings will not be as great as you might be anticipating.
    There are so many excellent plans available on line for centre console type fishing boats around 18' - or if they are not centre consoles as such, they could be fairly easily adapted.
    Here are a few links that come to mind easily -
    Curlew 20 – Devlin Designing Boat Builders https://www.devlinboat.com/wordpress1/2015/12/curlew-20/

    This one is primarily a cabin version, but there is an option of a centre console
    Wood Boat Plans, Wooden Boat Kits and Boat Designs - Arch Davis Design http://www.archdavisdesigns.com/davis_bay_pilot_18.html

    Here is a very simple single chine dory with a centre console
    Spira International Inc - Hatteras V-Bottom Carolina Dory http://spirainternational.com/hp_hatt.php

    Ooops! Just realised that I replied to a thread that is 7 years old, sorry.
     
  11. M.Zouhairy
    Joined: Nov 2014
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    Location: Egypt

    M.Zouhairy New Member

    Well, thank you for your care.
    But, can you please be more specific and list down any of your concerns ??
    Building a steel boat is very tempting for me as I have hand on steel sheets and I have many professional welders and most probably the cost won’t be an issue at all.
    I just need suitable plans and am good to go!
     
  12. TANSL
    Joined: Sep 2011
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    Location: Spain

    TANSL Senior Member

    @M.Zouhairy, I could create the construction plans for your steel ship, if you do not find what you need elsewhere. Contact me, if you want, through my email : 657677483@orange.es
     

  13. JSL
    Joined: Nov 2012
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    Location: Delta BC

    JSL Senior Member

    Go with aluminum. Based on a 24' design I did for a builder (client insisted on steel), over a period of 5 years he said it should have been built in aluminum. Steel saved him about 5% and never gave him the boat he really wanted or needed/ It was hardly worth the frustration.
    -Aluminum is lighter = less power required
    -it does not rust = less cost & maintenance in paint/coatings.
    -cleaner environment for building = less dust, grime, etc
    -more extrusions available = easy to add attractive trim to finish off.
    there are many other advantages, and few dis-advantages.
    make sure you use the correct (marine) alloys
     
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