Fuel tank suggestion

Discussion in 'Downeast Boat Builders (25 Ft+)' started by Lobster331, Jan 27, 2020.

  1. Lobster331

    Lobster331 Member

    Joined:
    Jun 16, 2014
    Posts:
    14
    Likes Received:
    2
    Hi everyone ,
    I have recently developed a leak in the bottom of my stainless fuel tank. Looking to replace them and wondering what materials you guys would suggest. They are 150 gallons apiece. I want to build fiberglass tanks but the builder is recommending aluminum coated with a s1 on the outside. All the new boat builds I see are mostly done in fiberglass and no one seems to have any issues.
     
  2. Keelboater

    Keelboater Captain

    Joined:
    Oct 3, 2013
    Posts:
    5,355
    Likes Received:
    3,256
    Location:
    Clinton Harbor
    Boat Make:
    35' Bruno & Stillman
    Gas or diesel? What is s1? Is this a wet bilge area?
     
  3. BillD

    BillD Captain

    Joined:
    Sep 1, 2011
    Posts:
    6,237
    Likes Received:
    1,847
    Occupation:
    Business owner
    Location:
    Portsmouth NH, boating out of the mighty Merrimack
    Boat Make:
    25 Terry Jason with Cummins 370 power
    the 1997 27 H&H I bought used has twin fiberglass fuels. FRP is the top choice IMO for diesel fuel tanks in a boat. No metal
     
    osprey47, eyecatcher and Genius like this.
  4. southshore30

    southshore30 Senior Member

    Joined:
    Feb 22, 2012
    Posts:
    367
    Likes Received:
    173
    Occupation:
    firefighter/EMT
    Location:
    Cape Cod,MA
    Boat Make:
    Calvin Beal/Southshore 30
    Fiberglass for diesel. They will last a lifetime if installed correctly. Are you positive they are stainless and that big? Stainless is pretty brittle, aluminum more common for tanks 150gallons
     
    Genius likes this.
  5. leaky

    leaky Captain

    Joined:
    Sep 9, 2014
    Posts:
    2,510
    Likes Received:
    965
    Location:
    NH
    I'd say go fiberglass too.

    The originals could be stainless but I think more likely it's this alloy that escapes me, looks like stainless but it's not, want to say the name starts with an "m"...
     
  6. southshore30

    southshore30 Senior Member

    Joined:
    Feb 22, 2012
    Posts:
    367
    Likes Received:
    173
    Occupation:
    firefighter/EMT
    Location:
    Cape Cod,MA
    Boat Make:
    Calvin Beal/Southshore 30
    Your thinking of Monel. The boat would have to be from the 50’s most likely to have monel tanks.
     
    leaky likes this.
  7. leaky

    leaky Captain

    Joined:
    Sep 9, 2014
    Posts:
    2,510
    Likes Received:
    965
    Location:
    NH
    Bingo - yes. But the boat I fish on with them was built in the 70s to my knowledge.
     
    southshore30 likes this.
  8. southshore30

    southshore30 Senior Member

    Joined:
    Feb 22, 2012
    Posts:
    367
    Likes Received:
    173
    Occupation:
    firefighter/EMT
    Location:
    Cape Cod,MA
    Boat Make:
    Calvin Beal/Southshore 30
    Very possible they are. I saw a lot of monel tanks working at a wooden boat shop where we primarily worked on Huckins from the early 50’s but it entirely possible that material was used in some boats up to the 70’s or later. There is probably most definitely repurposed monel tanks still in use today in some boats.
     

Share This Page