CROC — ORC Rating | RegattaPages

GPH

775.3

OSN

754.3

LOA

6.4 m

Displacement

1232 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5345

Medium

0.7084

High

0.8173

Triple Offshore

Low

0.6847

Medium

0.8671

High

0.9775

Boat Specifications

Dimensions

Length overall: 6.4 m
Beam: 2.5 m
Draft: 1.8 m
Displacement: 1232 kg
Crew weight: 350 kg
Wetted surface: 11.5 m²

Sails

Mainsail: 13.9 m²
Genoa: 10.67 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 33.03 m²

Design

Type: First 21.7 S
Builder: Beneteau
Designer: Finot
Year built: 2005

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.

6,42,3.713946,52,4.15,60,4.36,75,4.52,90,4.75,110,4.76,120,4.6,135,4.17,147,3.720173,150,3.6
8,41.1,4.365923,52,4.89,60,5.1,75,5.27,90,5.51,110,5.51,120,5.41,135,5.07,147.2,4.580244,150,4.45
10,40.5,4.83952,52,5.34,60,5.48,75,5.64,90,5.87,110,5.89,120,5.81,135,5.59,148,5.22376,150,5.11
12,38.2,5.089985,52,5.58,60,5.7,75,5.87,90,6.21,110,6.28,120,6.18,135,5.93,150,5.51,174,4.88677
14,36.4,5.255352,52,5.76,60,5.9,75,6.05,90,6.44,110,6.66,120,6.57,135,6.29,150,5.77,177,5.367356
16,36,5.315092,52,5.88,60,6.06,75,6.29,90,6.55,110,7.03,120,6.97,135,6.66,150,6.03,178,5.673456
20,37.1,5.316055,52,5.9,60,6.14,75,6.59,90,6.86,110,7.5,120,7.8,135,7.44,150,6.63,178,6.203779

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.15	4.36	4.52	4.75	4.76	4.6	4.17	3.6
8	4.89	5.1	5.27	5.51	5.51	5.41	5.07	4.45
10	5.34	5.48	5.64	5.87	5.89	5.81	5.59	5.11
12	5.58	5.7	5.87	6.21	6.28	6.18	5.93	5.51
14	5.76	5.9	6.05	6.44	6.66	6.57	6.29	5.77
16	5.88	6.06	6.29	6.55	7.03	6.97	6.66	6.03
20	5.9	6.14	6.59	6.86	7.5	7.8	7.44	6.63

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	2.76	147°	3.12
8	41.1°	3.29	147.2°	3.85
10	40.5°	3.68	148°	4.43
12	38.2°	4	174°	4.86
14	36.4°	4.23	177°	5.36
16	36°	4.3	178°	5.67
20	37.1°	4.24	178°	6.2

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