Spitfire — ORC Rating

GPH

556.8

OSN

541.6

LOA

12.19 m

Displacement

6290 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7161

Medium

0.9825

High

1.1242

Triple Offshore

Low

0.9356

Medium

1.2187

High

1.3781

Boat Specifications

Dimensions

Length overall: 12.19 m
Beam: 3.75 m
Draft: 2.52 m
Displacement: 6290 kg
Crew weight: 847 kg
Wetted surface: 33.21 m²

Sails

Mainsail: 47.6 m²
Genoa: 38.87 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 151.75 m²

Design

Type: J 121
Builder: CCF COMPOSITES
Designer: JOHNSTONE
Year built: 2017

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.

6,42.8,5.056357,52,5.68,60,6.01,75,6.57,90,6.81,110,6.56,120,6.23,135,5.56,143,5.083671,150,4.69
8,41.2,6.047195,52,6.82,60,7.21,75,7.67,90,7.85,110,7.71,120,7.57,135,6.97,146,6.163774,150,5.9
10,40.1,6.86345,52,7.59,60,7.79,75,8.09,90,8.35,110,8.31,120,8.23,135,7.88,147.8,7.173303,150,7.01
12,37.9,7.1602,52,7.92,60,8.11,75,8.32,90,8.74,110,8.84,120,8.84,135,8.43,150,7.82,151,7.751941
14,37.1,7.271962,52,8.06,60,8.29,75,8.62,90,9.04,110,9.45,120,9.49,135,9.07,150,8.24,151,8.174982
16,36.8,7.343287,52,8.13,60,8.39,75,8.87,90,9.28,110,10.04,120,9.97,135,9.81,150,8.66,175,7.618993
20,36.4,7.491672,52,8.24,60,8.48,75,9.09,90,9.78,110,10.88,120,11.35,135,11.69,143.2,10.865067,150,10.05

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.68	6.01	6.57	6.81	6.56	6.23	5.56	4.69
8	6.82	7.21	7.67	7.85	7.71	7.57	6.97	5.9
10	7.59	7.79	8.09	8.35	8.31	8.23	7.88	7.01
12	7.92	8.11	8.32	8.74	8.84	8.84	8.43	7.82
14	8.06	8.29	8.62	9.04	9.45	9.49	9.07	8.24
16	8.13	8.39	8.87	9.28	10.04	9.97	9.81	8.66
20	8.24	8.48	9.09	9.78	10.88	11.35	11.69	10.05

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.71	143°	4.06
8	41.2°	4.55	146°	5.11
10	40.1°	5.25	147.8°	6.07
12	37.9°	5.65	151°	6.78
14	37.1°	5.8	151°	7.15
16	36.8°	5.88	175°	7.59
20	36.4°	6.03	143.2°	8.7

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