Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin w/transom hung rudder
Rigging Type: Fractional Sloop
LOA: 8.99 m
LWL: 7.62 m
S.A. (reported): 42.09 m²
Beam: 3.35 m
Displacement: 2,495 kg
Ballast: 953 kg
Max Draft: 1.71 m
Construction: FG
Ballast Type: Lead
First Built: 1982
Last Built: 1987
# Built: 298
Builder: J Boats Tillotson Pearson (USA)
Designer: Johnstone

Sailboat Calculations

Definitions
S.A. / Displ.: 23.33
Bal. / Displ.: 38.18
Disp: / Len: 157.14
Comfort Ratio: 13.23
Capsize Screening Formula: 2.50
S#: 4.08
Hull Speed: 6.70 kn
Pounds/Inch Immersion: 982.61 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 10.67 m
J: 3.51 m
P: 11.83 m
E: 3.96 m
S.A. Fore: 18.70 m²
S.A. Main: 23.43 m²
S.A. Total (100% Fore + Main Triangles): 42.13 m²
S.A./Displ. (calc.): 23.35
Est. Forestay Length: 11.23 m

Sailboat Links

Designers: Rod Johnstone
Builders: J Boats
Associations: J/29 Class Assoc. Home Page
Related Sailboats: J/29 MH
Download Boat Record:

Notes

The J/29 was available with either a fractional or masthead rig.
Dimensions for fractional rig shown here.
Inboard aux. power also available.