PERCEPTION — ORC Rating

GPH

762.3

OSN

742.1

LOA

15.164 m

Displacement

23149 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.474

Medium

0.6777

High

0.8342

Triple Offshore

Low

0.6458

Medium

0.9045

High

1.0805

Boat Specifications

Dimensions

Length overall: 15.164 m
Beam: 4.12 m
Draft: 1.51 m
Displacement: 23149 kg
Crew weight: 1063 kg
Wetted surface: 59.36 m²

Sails

Mainsail: 43.48 m²
Genoa: 62.1 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 103.47 m²

Design

Type: CTM HERRESHOFF SCN
Builder: New Zeland
Designer: N. Herreshoff
Year built: 1924

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.

6,52,3.38,55.5,3.672276,60,4.03,75,4.75,90,5.08,110,5.18,120,4.97,135,4.38,147,3.851333,150,3.73
8,52,4.31,54,4.508449,60,5.04,75,5.86,90,6.17,110,6.32,120,6.15,135,5.61,148,4.940758,150,4.84
10,52,4.98,53.6,5.173411,60,5.76,75,6.55,90,7.09,110,7.29,120,7.12,135,6.57,148,5.943059,150,5.82
12,52,5.46,52.9,5.570218,60,6.3,75,7.22,90,7.85,110,8.02,120,7.91,135,7.44,150,6.62,171,5.81155
14,52,5.82,52.9,5.951513,60,6.75,75,7.73,90,8.28,110,8.42,120,8.35,135,8.06,150,7.36,172,6.513388
16,52,6.13,52.5,6.192902,60,7.12,75,8.02,90,8.52,110,8.69,120,8.64,135,8.43,150,7.94,172,7.220267
20,52,6.52,53.2,6.694227,60,7.55,75,8.31,90,8.74,110,9.2,120,9.18,135,8.97,150,8.56,176.5,8.195286

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	3.38	4.03	4.75	5.08	5.18	4.97	4.38	3.73
8	4.31	5.04	5.86	6.17	6.32	6.15	5.61	4.84
10	4.98	5.76	6.55	7.09	7.29	7.12	6.57	5.82
12	5.46	6.3	7.22	7.85	8.02	7.91	7.44	6.62
14	5.82	6.75	7.73	8.28	8.42	8.35	8.06	7.36
16	6.13	7.12	8.02	8.52	8.69	8.64	8.43	7.94
20	6.52	7.55	8.31	8.74	9.2	9.18	8.97	8.56

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	55.5°	2.08	147°	3.23
8	54°	2.65	148°	4.19
10	53.6°	3.07	148°	5.04
12	52.9°	3.36	171°	5.74
14	52.9°	3.59	172°	6.45
16	52.5°	3.77	172°	7.15
20	53.2°	4.01	176.5°	8.18

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