OFF COURSE — ORC Rating

GPH

692.8

OSN

673.8

LOA

10 m

Displacement

4926 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6718

Medium

0.8975

High

1.0187

Triple Offshore

Low

0.8586

Medium

1.097

High

1.2102

Boat Specifications

Dimensions

Length overall: 10 m
Beam: 3.41 m
Draft: 1.82 m
Displacement: 4926 kg
Crew weight: 360 kg
Wetted surface: 23 m²

Sails

Mainsail: 23.07 m²
Genoa: 36.58 m²
Spinnaker: 84.59 m²
Asymmetric spinnaker: 0 m²

Design

Type: CARTER 3/4 TON
Builder: N.Shore Yachts
Designer: CARTER
Year built: 1974

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.

6,41.8,4.212074,52,4.73,60,4.96,75,5.15,90,5.1,110,5.13,120,5,135,4.59,147.4,4.047706,150,3.94
8,40.3,4.877612,52,5.53,60,5.8,75,6,90,5.98,110,6.16,120,6.06,135,5.6,150,4.9,151.5,4.824667
10,41,5.498804,52,6.1,60,6.28,75,6.43,90,6.49,110,6.65,120,6.61,135,6.37,150,5.78,150.3,5.767693
12,40.5,5.825835,52,6.36,60,6.52,75,6.66,90,6.71,110,6.96,120,6.95,135,6.76,150,6.41,159.6,6.060076
14,39.6,5.892176,52,6.47,60,6.65,75,6.84,90,6.91,110,7.2,120,7.27,135,7.08,150,6.76,180,6.26
16,39.4,5.92701,52,6.52,60,6.71,75,6.97,90,7.1,110,7.36,120,7.57,135,7.42,150,7.06,180,6.64
20,40,5.913495,52,6.53,60,6.73,75,7.09,90,7.41,110,7.6,120,7.9,135,8.06,150,7.7,180,7.22

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.73	4.96	5.15	5.1	5.13	5	4.59	3.94
8	5.53	5.8	6	5.98	6.16	6.06	5.6	4.9
10	6.1	6.28	6.43	6.49	6.65	6.61	6.37	5.78
12	6.36	6.52	6.66	6.71	6.96	6.95	6.76	6.41
14	6.47	6.65	6.84	6.91	7.2	7.27	7.08	6.76
16	6.52	6.71	6.97	7.1	7.36	7.57	7.42	7.06
20	6.53	6.73	7.09	7.41	7.6	7.9	8.06	7.7

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.8°	3.14	147.4°	3.41
8	40.3°	3.72	151.5°	4.24
10	41°	4.15	150.3°	5.01
12	40.5°	4.43	159.6°	5.68
14	39.6°	4.54	180°	6.26
16	39.4°	4.58	180°	6.64
20	40°	4.53	180°	7.22

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