BASIC — ORC Rating | RegattaPages

GPH

620.5

OSN

604.2

LOA

9.5 m

Displacement

3167 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6795

Medium

0.8932

High

1.0088

Triple Offshore

Low

0.8689

Medium

1.0793

High

1.1937

Boat Specifications

Dimensions

Length overall: 9.5 m
Beam: 3.24 m
Draft: 2 m
Displacement: 3167 kg
Crew weight: 528 kg
Wetted surface: 19.44 m²

Sails

Mainsail: 35.93 m²
Genoa: 26.99 m²
Spinnaker: 61.47 m²
Asymmetric spinnaker: 0 m²

Design

Type: SEAM 31
Builder: TSUBOI YACHT
Designer: I.YOKOYAMA
Year built: 1999
Stability index: 112

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.

6,41.8,5.110829,52,5.71,60,5.96,75,6.11,90,5.99,110,5.73,120,5.54,135,4.96,140.8,4.63259,150,4.15
8,39.4,5.875246,52,6.49,60,6.64,75,6.75,90,6.72,110,6.7,120,6.55,135,6.07,148.7,5.325008,150,5.25
10,37,6.160507,52,6.8,60,6.95,75,7.08,90,7.11,110,7.2,120,7.11,135,6.77,150,6.18,153.8,5.996043
12,36.3,6.290882,52,6.94,60,7.11,75,7.32,90,7.41,110,7.59,120,7.56,135,7.23,150,6.8,162.2,6.375184
14,35.8,6.349685,52,7.03,60,7.21,75,7.49,90,7.67,110,7.94,120,7.97,135,7.68,150,7.24,175.4,6.67149
16,35.7,6.403282,52,7.09,60,7.28,75,7.61,90,7.89,110,8.24,120,8.4,135,8.15,150,7.66,179,7.09108
20,36,6.452275,52,7.14,60,7.37,75,7.76,90,8.21,110,8.72,120,9.31,135,9.36,150,8.62,179,7.891202

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.71	5.96	6.11	5.99	5.73	5.54	4.96	4.15
8	6.49	6.64	6.75	6.72	6.7	6.55	6.07	5.25
10	6.8	6.95	7.08	7.11	7.2	7.11	6.77	6.18
12	6.94	7.11	7.32	7.41	7.59	7.56	7.23	6.8
14	7.03	7.21	7.49	7.67	7.94	7.97	7.68	7.24
16	7.09	7.28	7.61	7.89	8.24	8.4	8.15	7.66
20	7.14	7.37	7.76	8.21	8.72	9.31	9.36	8.62

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.8°	3.81	140.8°	3.59
8	39.4°	4.54	148.7°	4.55
10	37°	4.92	153.8°	5.38
12	36.3°	5.07	162.2°	6.07
14	35.8°	5.15	175.4°	6.65
16	35.7°	5.2	179°	7.09
20	36°	5.22	179°	7.89

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