[TODO make links to boat parts, look for ??]
What?
This is a summary of the measurements I've used to make my boat. If you're just reading these pages for interests sake you can probably skip this. If you are actually planning on building a boat, these numbers will be invaluable since otherwise you'll be left to guess at a good location for a lot of items.
Measurements from the Rules
Measurements taken from the rules are noted with a * beside the description.
Measurements that aren't in the Rules
I have found measurements that aren't in the rules through a lot of reading and emailing. These are what I've used for my boat. They aren't mandatory, just what people have found works.
Because the International Canoe is a development class there aren't very many specific measurements in the rules. Most of these numbers are a result of people experimenting over many years. Its a good starting point to work towards a boat that is specifically tuned for you.
Hull
The measurements from the hull are taken from the point of the bow or stern.
| Measurements | |
| Rudder box, aft edge to transom | 465mm |
| Rudder box slot length | 315mm |
| Seat Carriage Track, aft edge to transom | ? |
| Seat Carriage Track, fore edge to transom | 2585mm? |
| Daggerboard, fore edge to transom | 2850mm |
| Sidestay to transom (straight line, not along centreline) | 2940mm |
| Min Weight (all up) | |
| Mast to bow | 1960mm |
| Spinnaker launcher mouth to bow | 1100mm |
| Forestay to bow | 560mm |
| Bowsprit (extended) tip to bow * | 1800mm |
Mast
The measurements from the mast are all from the bottom of the hull due to the fact that the deck has no restrictions on its design and construction.
| Measurements | |
| Highest point of main sail (upper contrasting band, lower edge) * | 6360mm |
| Highest point of spinnaker (upper contrasting band, lower edge) * | 6360mm |
| Fore Triangle * | 4730mm |
| Lower Spreaders | 2760mm |
| Lower Spreader Angle | ? |
| Lower Spreader Length | ? |
| Upper Spreaders | ? |
| Upper Spreader Angle | ? |
| Upper Spreader Length | ? |
| Diametre, fore-aft | ? |
| Diametre, side-to-side | ? |
| Flex, fore-aft | ? |
| Flex, side-to-side | ? |
| Weight | ? |
Spreader angles are measured from a baseline running from mast to stern.
Boom
I have a carbon boom. See ?? for a description of how it was built.
| Measurements | |
| Length | |
| Diametre, vertical * | 100mm |
| Diametre, horizontal | 80mm |
| Flex, fore-aft | ? |
| Flex, side-to-side | ? |
| Weight | 5 pounds |
Seat
See ?? for a description of how it was built.
| Measurements | |
| Centreline to Outer edge of seat (measured horizontally) * | 2040mm |
| Max. Width * | 500mm |
| Mass (min-max) * | 9kg-12kg |
| Actual Mass | ? |
| Actual Width | ? |
| Actual Length (end-to-end) | ? |
| Rise | 9 inches |
The rise is a measure of how much higher the end of the seat is from the seat at the centreline of the boat due to the curvature of the seat. Its frequently 6 inches, mine is 9 inches to allow for a bit more clearance over waves, and time to react to lulls before splashing down.
Rigging
This is a list of the lengths of various parts of the running and standing rigging, useful when estimating quantities of rope and wire for purchasing. See ?? for a description and drawings of the layout.
| Measurements | |
| Main sheet | ? |
| Jib Sheet | ? |
| Vang | ? |
| Cunningham | ? |
| Outhaul | ? |
| Main Halyard | ? |
| Spin Halyard | ? |
| Jib Halyard | ? |
| Spin Sheet | ? |
| Spin Guy | ? |
| Spin Retreival line | ? |
| Forestay length | ? |
| Sidestay length | ? |
| Uppers length | ? |
Daggerboard
I have a wood core, carbon daggerboard. See ?? for a description of how it was built.
| Measurements | |
| Tip to hull bottom * | 1000mm |
| Width | 28mm |
| Chord at hull | 260mm |
| Chord at tip | 160mm |
| Chord starts taper, from tip | 400mm |
| Section | NACA0020/SD1020? |
| Flex, side-to-side | ? |
Rudder
I have a wood core, carbon rudder with a stainless steel post. See ?? for a description of how it was built.
| Measurements | |
| Tip to hull bottom | 500mm |
| Width | 28mm |
| Chord at hull | 260mm |
| Chord at tip | 160mm |
| Chord starts taper, from tip | 400mm |
| Section | SD1020? |
| Tiller extension length | 2400mm |
| Tiller length | ? |