Comparison Chart

AS-30 AS-30R AS-40 AS-50
Length 34.3″ ( 87.3 cm) 33.5″(85cm) 50″ (126cm) 50″ (126cm)
Weight 3 lbs. (1.4 kg) 2.75 lbs. (1.25kg) 4.1 lbs. (1.9 kg) 5.7 lbs. (2.6 kg)
Ext. past bow ~24″(61cm) ~24″(61cm) ~36″(91.5cm) ~36″(91.5cm)
Inside Width at Hinge 10.4″ (26cm) 8.8″ (22.4cm) 12.9″(32.7cm) 12.9″(32.7cm)
OD & Hinge Tube Material   G10 Fiberglass
1″ (25.4 mm)
G10 Fiberglass
1″ (25.4 mm)
G10 Fiberglass
1″ (25.4 mm)
G10 Fiberglass
1″ (25.4 mm)
Shaft material Aluminum 6061,
black anodized
Carbon fiber or titanium Titanium Titanium
*SWL 2100lbs(952kg) 3000lbs (1360kg) 4000lbs(1814kg) 4400lbs(1996kg)
Asymm max size 1000ft2 (93m2) 1500ft2 (140m2) 2000ft2 (186m2) 2200ft2 (204m2)
Code 0 max size 800ft2 (75m2) 1200ft2 (111m2) 1600ft2 (150m2) 1760ft2 (165m2)
Suitable boat size (approx.) up to 30′ up to 30+’
(racers & heavier boats)
up to 40′ up to 50′
(racers & heavier boats)
Drawing with Dimensions Drawing PDF Drawing PDF Drawing PDF Drawing PDF

*Safe Working Load (SWL):
The SWL is the maximum load created by the bobstay on the bowsprit at the attachment point of the bobstay to the bowsprit.