⛵ Sailboat DB

HERRESHOFF 31 (CAT KETCH 31)

Cat Ketch (unstayed) • Fin w/transom hung rudder • Built 1979–1986

photo drawing

Dimensions

LOA
30.83 ft
LWL
27.97 ft
Beam
10.33 ft
Max Draft
4 ft
Displacement
7,560 lbs
Ballast
3,350 lbs

Performance Ratios

Capsize Ratio ⓘ
2.10 (use caution offshore)
SA/D Ratio ⓘ
16.3
D/L Ratio ⓘ
154
Ballast Ratio ⓘ
44.3%

Sail Plan

Sail Area
393 sq ft
P
34 ft
E
14 ft
PY
29 ft
EY
11.5 ft

Construction

Hull Type
Fin w/transom hung rudder
Rig Type
Cat Ketch (unstayed)
Hull Material
Wood/FG
Ballast Type
Lead

Production

First Built
1979
Last Built
1986
Number Built
100

Engine & Accommodations

Engine Make
Nanni/Yanmar
Engine Type
Diesel
Water
60 gal
Fuel
18 gal
Notes: Mainsail 242 sq.ft./22.48m2\nMizzen sail 151 sq.ft./14.03m2 \nStaysail 248 sq.ft./23.04m2