CAL 31 Detailed Review

If you are a boat enthusiast looking to get more information on specs, built, make, etc. of different boats, then here is a complete review of CAL 31. Built by Jensen Marine/Cal Boats and designed by C. William Lapworth, the boat was first built in 1979. It has a hull type of Fin w/spade rudder and LOA is 9.6. Its sail area/displacement ratio 17.95. Its auxiliary power tank, manufactured by Universal, runs on Diesel.

CAL 31 has retained its value as a result of superior building, a solid reputation, and a devoted owner base. Read on to find out more about CAL 31 and decide if it is a fit for your boating needs.

Boat Information

Boat Specifications

LOA:9.6 m / 31.50 ft
Rigging Type:Masthead Sloop
Hull Type:Fin w/spade rudder
S.A. (reported):45.52 m2 / 489.97 ft2
Draft (max):1.52 m / 4.99 ft
Displacement:4159 kg / 9169.01 lbs
Ballast:1633 kg / 3600.14 lbs
Ballast Type:Lead
Last Built:1984
Designers:C. William Lapworth
LWL:7.82 m / 25.66 ft

Sail Boat Calculation

Comfort Ratio:24.07
Capsize Screening Formula:1.91

Rig And Sail Specs

I:12.65 m / 41.50 ft
S.A. Fore:10.67 m / 35.01 ft
E:3.66 m / 12.01 ft
S.A. Fore:26.02 m2 / 280.08 ft2
S.A. Main:19.51 m2 / 210.00 ft2
S.A. Total (100% Fore + Main Triangles)45.53 m2 / 490.08 ft2

Auxillary Power Tank

Fuel:76 L / 20.08 gals


Water:212 L / 56.00 gals


Builders:Jensen Marine/Cal Boats
Designers:C. William Lapworth


Who designed the CAL 31?

CAL 31 was designed by C. William Lapworth.

Who builds CAL 31?

CAL 31 is built by Jensen Marine/Cal Boats.

When was CAL 31 first built?

CAL 31 was first built in 1979.

How long is CAL 31?

CAL 31 is 7.82 m in length.

What is mast height on CAL 31?

CAL 31 has a mast height of 10.67 m.

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