SEVEN SPIRIT — ORC Rating

GPH

693.8

OSN

672.9

LOA

7.64 m

Displacement

1325 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5908

Medium

0.7989

High

0.9064

Triple Offshore

Low

0.7593

Medium

0.9724

High

1.0988

Boat Specifications

Dimensions

Length overall: 7.64 m
Beam: 2.38 m
Draft: 1.58 m
Displacement: 1325 kg
Crew weight: 390 kg
Wetted surface: 13.38 m²

Sails

Mainsail: 18.9 m²
Genoa: 16 m²
Spinnaker: 41.08 m²
Asymmetric spinnaker: 0 m²

Design

Type: SURPRISE-modifié
Builder: ARCHAMBAULT
Designer: JOUBERT/NIVELT
Year built: 1977

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.

6,42,4.279112,52,4.81,60,5.06,75,5.25,90,5.17,110,5.17,120,4.99,135,4.44,147,3.863257,150,3.74
8,40.5,5.036783,52,5.62,60,5.81,75,5.94,90,6.01,110,6.05,120,5.94,135,5.45,150,4.74,151,4.687752
10,38.6,5.514891,52,6.04,60,6.16,75,6.28,90,6.44,110,6.53,120,6.43,135,6.14,150,5.6,152.5,5.49035
12,37.1,5.654577,52,6.23,60,6.4,75,6.61,90,6.73,110,7.08,120,6.96,135,6.59,150,6.19,170,5.655926
14,36.8,5.719771,52,6.31,60,6.53,75,6.91,90,7.06,110,7.58,120,7.56,135,7.11,150,6.6,180,6.09
16,36.8,5.757237,52,6.36,60,6.6,75,7.07,90,7.43,110,7.94,120,8.24,135,7.71,150,7.07,180,6.47
20,37.5,5.772964,52,6.37,60,6.64,75,7.2,90,7.86,110,8.6,120,9.34,135,9.35,150,8.24,180,7.36

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.81	5.06	5.25	5.17	5.17	4.99	4.44	3.74
8	5.62	5.81	5.94	6.01	6.05	5.94	5.45	4.74
10	6.04	6.16	6.28	6.44	6.53	6.43	6.14	5.6
12	6.23	6.4	6.61	6.73	7.08	6.96	6.59	6.19
14	6.31	6.53	6.91	7.06	7.58	7.56	7.11	6.6
16	6.36	6.6	7.07	7.43	7.94	8.24	7.71	7.07
20	6.37	6.64	7.2	7.86	8.6	9.34	9.35	8.24

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.18	147°	3.24
8	40.5°	3.83	151°	4.1
10	38.6°	4.31	152.5°	4.87
12	37.1°	4.51	170°	5.57
14	36.8°	4.58	180°	6.09
16	36.8°	4.61	180°	6.47
20	37.5°	4.58	180°	7.36

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