Copyright 2024 - Woods Designs, 16 King St, Torpoint, Cornwall, PL11 2AT UK
  • production Strider 24

  • plywood Romany 34

  • lightweight 14ft Zeta mainhull

  • Strike 15 trimaran at speed

  • 28ft Skoota in British Columbia

  • 10ft 2 sheet ply Duo dinghy

  • 24ft Strider sailing fast

  • 36ft Mirage open deck catamaran


Use the hull spacing dimension from the drawing, not the photosheet. It should be 3700mm

Round Bilge offset table

Although the full size patterns are correct I still include an offset table for use as a check. I recently discovered a couple of errors in the table:

Frame 3 WL2 should be 215
Frame 4 WL3 should be 188
Frame 5 WL3 should be 202
Frame 8 WL2 should be 217

Daggerboard Position

The drawings show the daggerboard cases fitted on the outside of the hull. That is so that they do not interfere with the wing lockers. However the photo sheets show the daggerboard case on the inside of the hull. The builder whose boat I photographed chose this position to make it easier to reach and adjust the boards.

If building hard chine Wizard hulls then the daggerboard case can be fitted on the aft side Bhd4

There is no real difference in performance between the two positions so the choice is yours.

Sango and Wizard Basic Hard Chine Materials List

Hull planking 12 sheets 6mm ply 3 sheets 9mm ply
Decking 6 sheets 6mm ply
Timber 2in x 1in 200m 1in x 1in 100m
NOTE: all plywood to be best quality gaboon (okume) marine grade
All timber to be best quality softwood eg Douglas fir, sitka spruce, yellow cedar or similar.
NOTE: Timber sizes are nominal. Planed all round (PAR)
Glass sheathing 300g glass cloth (hulls) 36sq m 200g glass cloth (decks) 12sq m Epoxy 30kg min Fastenings Either 1in counter sunk stainless steel self tappers or gripfast/anchorfast barbed ring boat nails Approx 2000 reqd

Wizard needs 3 fewer sheets 6mm ply

Raised hull cabins

These are removable and will fit nest one inside the other and fit on the cockpit for transport. Adds headroom and light to the hulls. CLICK HERE for basic drawings