CHALLENGER 7.4

CHALLENGER 7.4

Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 24.33 ft / 7.42 m
LWL: 22.17 ft / 6.76 m
S.A. (reported): 230.00 ft² / 21.37 m²
Beam: 8.17 ft / 2.49 m
Displacement: 4,000.00 lb / 1,814 kg
Ballast: 2,090.00 lb / 948 kg
Max Draft: 3.42 ft / 1.04 m
Construction: FG
Ballast Type: Iron
First Built: 1974
Last Built: 1980
# Built: 800
Builder: Challenger Yachts Ltd. (CAN)
Designer: Alex McGruer

Sailboat Calculations

Definitions
S.A. / Displ.: 14.64
Bal. / Displ.: 52.25
Disp: / Len: 163.88
Comfort Ratio: 16.50
Capsize Screening Formula: 2.06
S#: 2.77
Hull Speed: 6.31 kn
Pounds/Inch Immersion: 647.19 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 26.50 ft / 8.08 m
J: 9.50 ft / 2.90 m
P: 23.80 ft / 7.25 m
E: 8.25 ft / 2.51 m
S.A. Fore: 125.88 ft² / 11.69 m²
S.A. Main: 98.18 ft² / 9.12 m²
S.A. Total (100% Fore + Main Triangles): 224.06 ft² / 20.82 m²
S.A./Displ. (calc.): 14.27
Est. Forestay Length: 28.15 ft / 8.58 m

Sailboat Links

Designers: Alex McGruer
Builders: Challenger Yachts Ltd.(CAN)
Download Boat Record:

Notes

Also known as the CHALLENGER 7.5 and CHALLENGER 24.
Most of the boats are powered by an outboard, although the original design called for a Renault diesel.