SB 20 — ORC Rating | RegattaPages

GPH

711.4

OSN

693.7

LOA

6.073 m

Displacement

695 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6723

Medium

0.856

High

0.9774

Triple Offshore

Low

0.8541

Medium

1.0529

High

1.2007

Boat Specifications

Dimensions

Length overall: 6.073 m
Beam: 2.06 m
Draft: 1.5 m
Displacement: 695 kg
Crew weight: 270 kg
Wetted surface: 9.68 m²

Sails

Mainsail: 17.28 m²
Genoa: 8.86 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 44.5 m²

Design

Type: SB20 ONE DESIGN
Builder: LASER
Designer: TONY CASTRO
Year built: 2001

Velocity Prediction

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into WX Navigator or compatible navigation software.

6,41.7,4.084977,52,4.58,60,4.81,75,4.99,90,5.28,110,5.34,120,5.22,135,4.75,146.1,4.240901,150,4.07
8,40.8,4.808486,52,5.32,60,5.47,75,5.58,90,5.85,110,5.97,120,5.88,135,5.59,149.2,5.087548,150,5.04
10,38.2,5.15361,52,5.66,60,5.79,75,5.92,90,6.13,110,6.57,120,6.52,135,6.14,150,5.63,150.9,5.58498
12,37.4,5.274324,52,5.82,60,6.03,75,6.32,90,6.39,110,6.99,120,7.23,135,6.78,150,6.04,175.5,5.316389
14,37.6,5.313713,52,5.88,60,6.14,75,6.61,90,6.85,110,7.36,120,7.81,135,7.57,150,6.5,177.6,5.745039
16,38.1,5.337162,52,5.9,60,6.2,75,6.75,90,7.28,110,7.75,120,8.3,135,8.56,142.8,7.884199,150,7.26
20,38.9,5.396771,52,6.01,60,6.35,75,6.88,90,7.69,110,8.54,120,9.4,135,11.34,140.9,11.403957,150,10.22

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.58	4.81	4.99	5.28	5.34	5.22	4.75	4.07
8	5.32	5.47	5.58	5.85	5.97	5.88	5.59	5.04
10	5.66	5.79	5.92	6.13	6.57	6.52	6.14	5.63
12	5.82	6.03	6.32	6.39	6.99	7.23	6.78	6.04
14	5.88	6.14	6.61	6.85	7.36	7.81	7.57	6.5
16	5.9	6.2	6.75	7.28	7.75	8.3	8.56	7.26
20	6.01	6.35	6.88	7.69	8.54	9.4	11.34	10.22

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.7°	3.05	146.1°	3.52
8	40.8°	3.64	149.2°	4.37
10	38.2°	4.05	150.9°	4.88
12	37.4°	4.19	175.5°	5.3
14	37.6°	4.21	177.6°	5.74
16	38.1°	4.2	142.8°	6.28
20	38.9°	4.2	140.9°	8.85

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