DIY: PVC Pipes for a Catamaran

For the adventurous boat builder, multi-hull catamarans provide a challenging build, and an even more exciting sailing experience. A catamaran features two pods, or hulls, which are shaped like large, enclosed canoes. The hulls are joined by two beams, and the boat's captain sits on a trampoline built between the hulls. For the boat builder, PVC is strong, easy to fabricate material that is lightweight and resists corrosion. PVC is a perfect choice for the center trampoline framework.

Things You'll Need

  • Catamaran boat building plans
  • 3 or 4 inch diameter PVC pipes
  • Hack saw
  • PVC cement
  • Acetone
  • Clean rags
  • Rubber gloves
  • Assorted 3 or 4 inch fittings, including elbows, tees, and escutcheons
  • Woven polyester cloth for the trampoline
  • Elastic cord and rope
  • Stainless steel U bolts
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Instructions

    • 1

      Build catamaran pontoons, or hulls, and assemble the boat with two beams between them. The front and rear beams absorb the stress of sailing the vessel, and should be a lightweight, corrosion resistant metal such as aluminum or magnesium, not PVC.

    • 2

      Assemble a square or rectangular platform from PVC pipes. Make the large trampoline frame like a checkerboard, using PVC pipes as center supports, and as the trampoline's perimeter. The center supports will eliminate any flex in the pipes, and the trampoline will remain tight when the craft is on the water.

    • 3

      Wipe the PVC pipes with acetone on a clean rag to remove the black manufacture's printing which is printed along the sides of the pipes.

    • 4

      Sew a reinforced edge around a single piece of woven polyester cloth for the trampoline. Insert grommets every 6 inches around the perimeter of the trampoline, so it can be laced into the PVC framework.

    • 5

      Stretch woven polyester cloth in the frame, and attach the trampoline to the frame with elastic cords around the perimeter of the tarp. Lace the trampoline onto the frame as you would lace up a tall boot.

    • 6

      Bolt the frame across the catamaran's front and rear beam with stainless steel U bolts. Many catamaran beams are D shaped, with a flat surface on the bottom of the beam, which makes the surface perfect for a U bolt. Lay the frame onto the beams, and bolt it to the cross members. This method allows you to easily detach the trampoline for off season storage, or in the event of needed repairs.