Trimaran tour boat with steerable long-tail electric motor ... or what else?

Discussion in 'Boat Design' started by yodani, Dec 7, 2014.

  1. Externet
    Joined: May 2009
    Posts: 35
    Likes: 1, Points: 0, Legacy Rep: 24
    Location: Mideast U.S.

    Externet Junior Member

    Yodani : Go for it!
    Make its roof with foldable or not overhangs all around. Install solar panels on it and you will get a decent amount of power for propulsion/charging, ~ 3 to 4 KW. Panels have not been cheaper than these days, under $1 a watt.
    I would use plain automotive batteries, much lower cost and will survive ~4+ years without vibration and proper care. Deep cycle ones are for people who abuse or neglect them and at 3 times the price.

    Two motors in a catamaran instead of one on a trimaran can get rid of rudders for low speeds.
     
  2. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    Automotive cranking batteries are designed to give a large amperage for a short time. The opposite of what you need. A deep cycle battery will discharge a lower rate for a longer time. Also, consider that lead/acid batteries are only efficient to about 60% charge. The effective use is 95% to 60% for long life.
     

  3. SCHWIMMWANNEN
    Joined: May 2013
    Posts: 28
    Likes: 4, Points: 0, Legacy Rep: 59
    Location: Poland

    SCHWIMMWANNEN Junior Member

    Big electric Long Tail
     
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