Water ballast construction

Discussion in 'Boat Design' started by alibi, Feb 14, 2009.

  1. alibi
    Joined: Oct 2008
    Posts: 12
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: New Zealand

    alibi Junior Member

    Hi all..... I'm building a "hard tank" setup in my ski boat for filling with water ballast to make the wake bigger, looking at building fibreglass tanks capable of holding 400lbs. Do I need to make these tanks out of vinylester resin or will polyester be fine? as this is not potable water. Bearing in mind that water will not be sitting in the tanks for any long period of time only when wakeboarding.

    Cheers Mat
     
  2. TeddyDiver
    Joined: Dec 2007
    Posts: 2,533
    Likes: 109, Points: 73, Legacy Rep: 1650
    Location: Finland/Norway

    TeddyDiver Gollywobbler

    Yes you can do it with poly. Remember gelcoat on both sides and fasten the tank well in its place. Just make also strong baffles inside. Make sure all the plumbering is marine grade and properly installed :)
     
  3. apex1

    apex1 Guest

    As an addition to Teddy´s comment:
    do´nt forget a sufficient "manhole" to clean the tank from time to time, you otherwise host a biotope after a while.;)
    Regards
    Richard
     
  4. alibi
    Joined: Oct 2008
    Posts: 12
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: New Zealand

    alibi Junior Member

    cheers for the advice guys, do i need gelcoat both sides? if at all? just curoius? also what is biotope?
     
  5. apex1

    apex1 Guest

    I cannot answer to the gelcoat question (I never used Polyesther). The biotope I mentioned, meant, if you do´nt clean the tank, you grow algae, mold and fertile sludge after some time, and that stinks.

    Regards
    Richard
     

  6. TeddyDiver
    Joined: Dec 2007
    Posts: 2,533
    Likes: 109, Points: 73, Legacy Rep: 1650
    Location: Finland/Norway

    TeddyDiver Gollywobbler

    Preferably.. though if you don't expect too much lifetime of the laminate a simple paint could do..
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.