This is a 2 page study plan for Charles Wittholz's 20' Catboat, Madam Tirza.
A small daysailer/cruiser with berths for two.
LOA - 20'
LWL - 19' 3"
Beam - 9' 6"
Draft (cb up) - 2'
(cb down) - 5' 3"
Displ. - 4,400 lbs.
Sail Area : Gaff cat - 338 sq. ft.
Marconi cat - 315 sq. ft.
Gaff sloop - 406 sq. ft.
Construction: Plywood planking over sawn frames
Lofting is required
Skill level: Intermediate to advanced
This study plan is contained in the study plans catalog: Thirty Wooden Boats. Here is a link to order the actual building
PLANS.
