8 meter steel boat

Discussion in 'Metal Boat Building' started by steel.t, Apr 26, 2016.

  1. steel.t
    Joined: Apr 2016
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    Location: Italy

    steel.t Junior Member

    Hello I am thinking about building a steel boat. N.1 priority is that is under 8 meters long (I want to keep marina fees low). Ideally it would be 7.9 meters long.

    I have been searching the web for years (literally) So far I have found this:
    1. Martin Bekebrede Noordkaper 28 ok (too long)
    2. Evon 700 Cabin (it could be longer)

    Do you know if they sell plans and what they cost?
    Are there any similar designs that would meet my criteria?

    Thanks
     
  2. steel.t
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    steel.t Junior Member

    Pictures

    [​IMG]

    [​IMG]
     
  3. daiquiri
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    Location: Italy (Garda Lake) and Croatia (Istria)

    daiquiri Engineering and Design

  4. Chase_B
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    Chase_B Junior Member

  5. daiquiri
    Joined: May 2004
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    Location: Italy (Garda Lake) and Croatia (Istria)

    daiquiri Engineering and Design

    Why stainless?
     
  6. Chase_B
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    Chase_B Junior Member

    Wont corode

    Easy to work with, great ductilibility, easy to weld, ....
     
  7. Chase_B
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    Chase_B Junior Member

    Although i used 5052 aluminum to make this, still easy to work with and weld..
     

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  8. Chase_B
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    Chase_B Junior Member

    What thickness ateel, cold rolled or hot rolled
     
  9. daiquiri
    Joined: May 2004
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    Location: Italy (Garda Lake) and Croatia (Istria)

    daiquiri Engineering and Design

    No, stainless steel is a wrong material for this project. Remember, talking about an 8-meters (26 ft) boat.
    316L costs much more than mild steel, has a ridiculous (even quite non-defined) yield strength for the same density of mild steel, and the hull would still need painting in order to protect the underwater parts from corrosion. The rest of the boat, if left unpainted, will still be exposed to crevice and heat-stress corrosion.
    All of these issues would lead to a heavier and much more expensive boat than what is really necessary, with no significant advantage over a mild-steel construction.
     
  10. Chase_B
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    Chase_B Junior Member

    Mega mex carries monel and inkonel products for below the water line
     
  11. Chase_B
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    Chase_B Junior Member

    One can find materials at other then new , at 26' is this going to be trailerable or docked
     
  12. Chase_B
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    Chase_B Junior Member

    at 26' are you using 14 guage metal for hull, or?
     
  13. SamSam
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    SamSam Senior Member

    The guy is in Italy so I doubt American metal suppliers will be practical.
     
  14. Chase_B
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    Chase_B Junior Member

    Roger that
     

  15. NavalSArtichoke
    Joined: Oct 2013
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    NavalSArtichoke Senior Member

    You might want to review this guide to welding stainless steel:

    https://www.nickelinstitute.org/~/M...ainlesssSteelandotherJoiningMethods_9002_.pdf

    Although it's steel, stainless requires careful prep and welding procedures so that the finished joint doesn't lose its corrosion protection and to make sure it
    doesn't warp. You'll also need to select a special rod/wire for the actual welding, depending on the type of stainless steel used in your construction.
     
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