Purists will disagree about the name semi-dory but that's the name under
which we designed her. Compared to the larger sharpie in this web site,
she has relatively more freeboard. She is a good general purpose little
boat. She would make an excellent dinghy that will carry 3 people, but
I would not sail with more than two. She can be rigged with a sprit sail
or with a marconi rig using a sailboard sail.
Builder threads on our forum:
This boat is built from flat plywood panels assembled with epoxy-fiberglass
tape. The construction method is called "stitch and glue". For a detailed
description of the stitch and glue boat building method, see our "How
To" section where you will find a complete illustrated tutorial as
well as information about epoxy, fiberglass and plywood.
The spars (mast and sprit) are made from 1x3 boards (12x30 mm) epoxy glued
together. No shrouds required: very simple.
SD11 hull is very easy to build thanks to her flat bottom. There are no
plywood scarfs: we use very simple butt blocks.
No woodworking skills or special tools are required.
She can be rigged with a sprit sail or with a marconi rig using a sailboard
sail. The sail plans with spars, sails, daggerboard, rudder etc. are included
in all plan sets.
from our BOM)
BOM list materials based on our standard layout and includes a 15% waste
factor for resin and fiberglass. For plywood, we use standard sheets 4'
x 8' (122 x 244 cm). Please read the building notes and see the plans
for detailed specifications.
This boat can be built from inexpensive exterior plywood since it is completely
coated with epoxy resin.
The SD11 dinghy, rowing version, can be build for less than US $250.00
wooden spars cost around $20.00 in materials. Some builders made their
own sails: the dimensions are on the plans, but see our sail kit.
offer an epoxy fiberglass kit with free shipping in the US. Our
kit cost less than the same supplies bought locally. See the main page,
top left panel.
The average construction time for the hull is 25 hours.
Visit our message board, help pages, tutorial pages and read our FAQ:
most questions are answered there.
Detailed drawings, large scale with all dimensions required to cut the
sides, bottom and the bulkheads from flat plywood sheets: no lofting,
no templates required.
Complete sail plan with spars, rudder, daggerboard etc. and Lines
Construction and Plates
Full Size Patterns - Frames
Full Size Patterns - Sides
D95_5 Full Size Patterns - Appendages
notes including a detailed description of the assembly sequence and
files reference list and more.
size patterns for the side panels are in several pieces that must be tiled.
Read more information about our plans
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All supplies to build this boat are available from our online stores :: epoxy/glass/paint and more :: plywood
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