: Hi again,
: this community was a stron support when I was building my Pygmy Coho and
: Osprey13.

: Now I'm dreaming to build a hughe open canoe in stitch&glue, but I can't get
: hold on plans.
: My dream boat should be able to accomodate up to 10 (12) adult paddlers for
: day trips. Stability is an issue as I'll use the boat during team building
: sessions - so most of the paddlers will be novices. Some of the sessions
: coul dbe hold at moderately streaming rivers. Conseqently stability is an
: issue.
: For longer trips also speed is a nice thing to have. We'll join the annual
: Vogalonga, a kayaking / rowing event in an arround Venice, Italy. Maybe
: we'll do a month long river trip through Europe (2000km in 8 weeks on
: Danube river).
: For transportation and flexibility, I'd like to have a hull in 3 parts. Bow
: and stern form a smaller version (up to 6 persons)and with the added
: middle section I have all I need

: Unfortunatelly I can't find plans for such a beast. Do you know ready plans
: or how to create some?

: Which Software would be best to create shape, calculate stabiliy, get the
: details of the planks - and much more interesting: How to determin wall
: thickness (plywood + glass layup)

: Best thanks for all your ideas

: Joerg
: Vienna, Austria

These numbers from a Coast Salish Canoe could be a good starting point for what you are looking for.

I am using Freeship for this project. I think you would find Freeship helpful for sorting out your design specs.
Best,

Reg

Design length : 25.500 [ft]
Length over all : 25.447 [ft]
Design beam : 4.000 [ft]
Beam over all : 3.942 [ft]
Design draft : 0.750 [ft]
Midship location : 12.750 [ft]
Water density : 63.989 [lbs/ft3]
Volume properties:

Displaced volume : 27.697 [ft3]

Displacement : 0.791 [tons]

Total length of submerged body : 23.352 [ft]

Total beam of submerged body : 3.146 [ft]

Block coefficient : 0.5026

Prismatic coefficient : 0.6034

Vert. prismatic coefficient : 0.7772

Wetted surface area : 65.349 [ft2]

Longitudinal center of buoyancy : 11.743 [ft]

Longitudinal center of buoyancy : -4.313 [%]

Vertical center of buoyancy : 0.425 [ft]
Midship properties:

Midship section area : 1.966 [ft2]

Midship coefficient : 0.8330
Waterplane properties:

Length on waterline : 23.352 [ft]

Beam on waterline : 3.146 [ft]

Waterplane area : 47.516 [ft2]

Waterplane coefficient : 0.6467

Waterplane center of floatation : 11.730 [ft]

Entrance angle : 3.777 [degr.]

Transverse moment of inertia : 27.487 [ft4]

Longitudinal moment of inertia : 1197.4 [ft4]