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Replacement Boat - attempt 4



DESIGN REQUIREMENT
A highly seaworthy boat, for coastal sailing in Southern Australia, yet light enough to be brought up the high tide mark on a beach single handed and has some shelter from the elements for the occupant


DESIGN SOLUTION
A sailing outrigger canoe, with a single outrigger using water ballast and two wheels


DESIGN PARTICULARS

  • LOA = 18.5ft
  • Boat can be disassenbled quickly via use of lashings
  • Outrigger can be removed quickly via undoing lashings to reduce weight
  • Distance between Main Hull and outrigger centerlines = 7.5ft
  • Kickup rudder - will not break on grounding

  • Kickup centerboard - will not break on grounding
  • Outrigger can use up to 30kg of water ballast to increase righting moment
  • Outrigger is light enough to be righted single handed if boat tips in deep water
  • Safety ama provides a base for the stay, also provides protection against tipping
  • Wheels fold back when not in use, assist greatly in getting boat up the beach

  • Midsection freeboard of main hull = 41cm at 250kg laden
  • Width of main hull at chine = 56cm - just wide enough to lie down in
  • Main hull maximum width = 77cm
  • Outrigger (ama) is 15ft long and lightly built to assist manhandling it about and to assist in righting boat if tipped
  • Rig is bermudan with combined area of 100 square feet - I have the mast, boom and sails already

  • Boat dissassembles on the beach quiclky so that it can be brought up in parts
  • Assembly is pegs and holes secured via lashings, a superior method to nuts and bolts
  • Main hull waterline beam = 51cm at 250kg laden
  • Main hull fineness ratio = 10.5:1



Previous notes on this boat can be seen HERE and HERE























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