Sunday, August 15, 2010

10 Foot Row/Power Design-Build Project

As a first boat project, I have designed and am currently building a 10 Foot Row/Power Boat. It is a traditional style Power Boat that doubles as a Row Boat due to it's light weight (approximately 100 pounds). As a Power Boat, it will have a 4 HP motor, so it is definitely not a High Speed Power Boat,

Here are a few vital statistics:
  • LOA = 10 FT
  • LWL = 9.47 FT
  • Beam on Waterline = 4.0
  • Beam on Deck = 4.4 FT
  • Block Coefficient = 0.32
  • Prismatic Coefficient = 0.61
  • Design Draft = 0.45 FT
  • Midship Location = 4.85 FT (from stern)
  • Longitudinal Center of Buoyancy = 4.89 FT
  • Longitudianl Center of Gravity = 4.88 FT
  • Displacement = 336 LB (Fresh Water)
  • SN = 0.06
The boat was layed out on plywood using a 10 inch by 10 inch Square Grid.   










Construction Images:

Hull Bottom, 1/4 inch Marine Grade Plywood.

Butt Joint is made of West System Epoxy and Fiberglass Tape 6 inches wide @ 18oz/sy total - Outer Hull 6 oz/sy, Inner Hull 12oz/sy.

I tested the strength of this joint. The plywood breaks before the joint.










Close-up view of the the Tape Joint and Plastic Ties. Epoxy Fillet and Fiberglass Tape have not yet been applied to the Hull Topsides/ Hull Bottom Joint. 














Bow Section of Boat. Deck and Bulkhead have not been installed as of yet.

















Outside of Hull showing Plastic Ties. This method of construction required no Strongback or Frames.

















Bow section was nearly a perfect match.after beveling.


















Forward view of boat. Transom not installed yet.






















More images to follow.