Thetis-4 — ORC Rating

GPH

583.8

OSN

569.1

LOA

11.924 m

Displacement

7380 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7034

Medium

0.9365

High

1.0566

Triple Offshore

Low

0.9119

Medium

1.1544

High

1.2739

Boat Specifications

Dimensions

Length overall: 11.924 m
Beam: 3.77 m
Draft: 2.42 m
Displacement: 7380 kg
Crew weight: 731 kg
Wetted surface: 32.02 m²

Sails

Mainsail: 49.48 m²
Genoa: 38.25 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 126.09 m²

Design

Type: First40.7
Builder: Beneteau
Designer: B.FARR
Year built: 1997
Stability index: 122.2

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.

6,42.3,5.070095,52,5.78,60,6.18,75,6.53,90,6.55,110,6.1,120,5.92,135,5.31,143.3,4.851731,150,4.49
8,40.2,5.943995,52,6.78,60,7.09,75,7.35,90,7.39,110,7.22,120,7.09,135,6.57,147.5,5.821733,150,5.67
10,38.8,6.518353,52,7.24,60,7.49,75,7.75,90,7.84,110,7.81,120,7.74,135,7.41,148.7,6.752812,150,6.66
12,37.6,6.777824,52,7.52,60,7.69,75,7.97,90,8.16,110,8.22,120,8.2,135,7.91,150,7.35,150.1,7.336514
14,37,6.886746,52,7.65,60,7.84,75,8.12,90,8.42,110,8.56,120,8.62,135,8.36,150,7.75,151.4,7.653907
16,37,6.974396,52,7.73,60,7.93,75,8.24,90,8.61,110,8.79,120,9.02,135,8.82,150,8.07,173.6,7.265278
20,37.2,7.068159,52,7.8,60,8.03,75,8.43,90,8.86,110,9.28,120,9.65,135,9.84,150,8.72,176.3,8.01671

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.78	6.18	6.53	6.55	6.1	5.92	5.31	4.49
8	6.78	7.09	7.35	7.39	7.22	7.09	6.57	5.67
10	7.24	7.49	7.75	7.84	7.81	7.74	7.41	6.66
12	7.52	7.69	7.97	8.16	8.22	8.2	7.91	7.35
14	7.65	7.84	8.12	8.42	8.56	8.62	8.36	7.75
16	7.73	7.93	8.24	8.61	8.79	9.02	8.82	8.07
20	7.8	8.03	8.43	8.86	9.28	9.65	9.84	8.72

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	3.75	143.3°	3.89
8	40.2°	4.54	147.5°	4.91
10	38.8°	5.08	148.7°	5.77
12	37.6°	5.37	150.1°	6.36
14	37°	5.5	151.4°	6.72
16	37°	5.57	173.6°	7.22
20	37.2°	5.63	176.3°	8

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