SEVEN SPIRIT — ORC Rating

GPH

697.5

OSN

675.1

LOA

7.64 m

Displacement

1325 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5879

Medium

0.7958

High

0.909

Triple Offshore

Low

0.7538

Medium

0.9689

High

1.0928

Boat Specifications

Dimensions

Length overall: 7.64 m
Beam: 2.38 m
Draft: 1.58 m
Displacement: 1325 kg
Crew weight: 382 kg
Wetted surface: 13.4 m²

Sails

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

Design

Type: SURPRISE Q
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.

6,42.2,4.346625,52,4.85,60,5.06,75,5.18,90,5.07,110,5.08,120,4.89,135,4.31,145.6,3.805537,150,3.63
8,40.3,5.100513,52,5.65,60,5.81,75,5.91,90,5.95,110,6,120,5.87,135,5.34,150,4.65,150.3,4.627969
10,37.8,5.479937,52,6.05,60,6.18,75,6.3,90,6.4,110,6.53,120,6.42,135,6.1,150,5.52,152.1,5.419989
12,36.5,5.635332,52,6.26,60,6.42,75,6.61,90,6.68,110,7,120,6.93,135,6.58,150,6.16,160.6,5.809869
14,36.5,5.734852,52,6.35,60,6.55,75,6.86,90,6.99,110,7.42,120,7.43,135,7.07,150,6.6,176.3,6.032574
16,36.4,5.77716,52,6.41,60,6.63,75,7.01,90,7.29,110,7.76,120,7.98,135,7.6,150,7.05,177.7,6.435184
20,36.9,5.839802,52,6.49,60,6.75,75,7.22,90,7.71,110,8.32,120,9.05,135,9.07,150,8.1,177.1,7.279322
24,38.4,5.856882,52,6.49,60,6.79,75,7.34,90,7.99,110,8.88,120,10.06,135,12.09,141,11.580836,150,10.39

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.85	5.06	5.18	5.07	5.08	4.89	4.31	3.63
8	5.65	5.81	5.91	5.95	6	5.87	5.34	4.65
10	6.05	6.18	6.3	6.4	6.53	6.42	6.1	5.52
12	6.26	6.42	6.61	6.68	7	6.93	6.58	6.16
14	6.35	6.55	6.86	6.99	7.42	7.43	7.07	6.6
16	6.41	6.63	7.01	7.29	7.76	7.98	7.6	7.05
20	6.49	6.75	7.22	7.71	8.32	9.05	9.07	8.1
24	6.49	6.79	7.34	7.99	8.88	10.06	12.09	10.39

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.2°	3.22	145.6°	3.14
8	40.3°	3.89	150.3°	4.02
10	37.8°	4.33	152.1°	4.79
12	36.5°	4.53	160.6°	5.48
14	36.5°	4.61	176.3°	6.02
16	36.4°	4.65	177.7°	6.43
20	36.9°	4.67	177.1°	7.27
24	38.4°	4.59	141°	9

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