CALM DAYS — ORC Rating

GPH

742

OSN

718.6

LOA

6.578 m

Displacement

1336 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5581

Medium

0.7489

High

0.8493

Triple Offshore

Low

0.7123

Medium

0.9087

High

1.0197

Boat Specifications

Dimensions

Length overall: 6.578 m
Beam: 2.49 m
Draft: 1.46 m
Displacement: 1336 kg
Crew weight: 250 kg
Wetted surface: 11.6 m²

Sails

Mainsail: 17.75 m²
Genoa: 10.84 m²
Spinnaker: 32.41 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 235 (LK)
Builder: BENETEAU
Designer: BERRET
Year built: 1986
Stability index: 119.8

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.

6,42.4,4.008367,52,4.46,60,4.67,75,4.8,90,4.83,110,4.84,120,4.68,135,4.22,147.8,3.687101,150,3.6
8,40.2,4.634745,52,5.19,60,5.37,75,5.49,90,5.62,110,5.66,120,5.55,135,5.14,150,4.55,152.3,4.461293
10,38.8,5.068404,52,5.61,60,5.74,75,5.87,90,6.05,110,6.13,120,6.04,135,5.77,150,5.32,156.5,5.081456
12,37.6,5.28847,52,5.84,60,5.98,75,6.15,90,6.36,110,6.55,120,6.48,135,6.19,150,5.85,169.4,5.371666
14,37.2,5.360753,52,5.97,60,6.16,75,6.4,90,6.56,110,6.94,120,6.9,135,6.62,150,6.24,177.2,5.776897
16,37.8,5.44197,52,6.04,60,6.26,75,6.59,90,6.77,110,7.31,120,7.34,135,7.06,150,6.64,179,6.150937
20,39,5.481596,52,6.06,60,6.33,75,6.81,90,7.23,110,7.84,120,8.42,135,8.19,150,7.52,179,6.89105

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.46	4.67	4.8	4.83	4.84	4.68	4.22	3.6
8	5.19	5.37	5.49	5.62	5.66	5.55	5.14	4.55
10	5.61	5.74	5.87	6.05	6.13	6.04	5.77	5.32
12	5.84	5.98	6.15	6.36	6.55	6.48	6.19	5.85
14	5.97	6.16	6.4	6.56	6.94	6.9	6.62	6.24
16	6.04	6.26	6.59	6.77	7.31	7.34	7.06	6.64
20	6.06	6.33	6.81	7.23	7.84	8.42	8.19	7.52

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	2.96	147.8°	3.12
8	40.2°	3.54	152.3°	3.95
10	38.8°	3.95	156.5°	4.66
12	37.6°	4.19	169.4°	5.28
14	37.2°	4.27	177.2°	5.77
16	37.8°	4.3	179°	6.15
20	39°	4.26	179°	6.89

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