Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin w/spade rudder
Rigging Type: Masthead Sloop
LOA: 7.45 m
LWL: 6.30 m
S.A. (reported): 32.20 m²
Beam: 2.75 m
Displacement: 1,250 kg
Ballast: 620 kg
Max Draft: 1.48 m
Construction: FG
Ballast Type: Cast iron
First Built: 1976
Last Built: 1982
# Built: 35
Builder: F. Dekker shipyard (Amsterdam)
Designer: Leen Hoogmoed

Accomodations

Water: 50 L
Headroom: 1.65 m

Sailboat Calculations

Definitions
S.A. / Displ.: 28.28
Bal. / Displ.: 49.60
Disp: / Len: 139.32
Comfort Ratio: 10.43
Capsize Screening Formula: 2.58
S#: 3.96
Hull Speed: 6.09 kn
Pounds/Inch Immersion: 666.18 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 8.80 m
J: 2.90 m
P: 7.80 m
E: 2.55 m
S.A. Fore: 12.75 m²
S.A. Main: 9.95 m²
S.A. Total (100% Fore + Main Triangles): 22.70 m²
S.A./Displ. (calc.): 19.94
Est. Forestay Length: 9.27 m

Sailboat Links

Builders: Dekker & Sons (Jachtwerf F. Dekker en Zonen)
Associations: Quarter Ton Class
Download Boat Record:

Notes

Designed under IOR quarter ton rule, the prototype 'Weer 's Zeilen' (H-2313) won the Dutch Championships in IOR Class VII in 1976.

Shallow keel draft: 1.26m / 4.13 ft
Reported sail area above includes main + #1 genoa
Sail area:
-Main: 11.3 m² / 121.62 ft²
-#1 Jib: 14.2 m² / 152.85 ft²
-#1 Genoa: 20.9 m² / 224.96 ft²
-#2 Genoa: 16.7 m² / 179.76 ft²
-Spinnaker: 43 m² / 462.85 ft²

Thanks to Drifter 25 owner Jaap Kleingeld for supplying information and a brochure.