SHEAMAPU: ORC Rating

GPH

586.8

OSN

568.8

LOA

12.24 m

Displacement

7954 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7717

Medium

1.0584

High

1.2289

Triple Offshore

Low

0.9968

Medium

1.302

High

1.4662

Boat Specifications

Dimensions

Length overall: 12.24 m
Beam: 3.9 m
Draft: 2.48 m
Displacement: 7954 kg
Crew weight: 795 kg
Wetted surface: 34.81 m²

Sails

Mainsail: 52.29 m²
Genoa: 38.74 m²
Spinnaker: 123.93 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 40 CR Alu
Builder: BENETEAU SA
Designer: FARR Design
Year built: 2008

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,42.7,4.884921,52,5.49,60,5.81,75,6.07,90,6,110,6.02,120,5.86,135,5.28,143.9,4.777288,150,4.46
8,41,5.790307,52,6.54,60,6.86,75,7.1,90,7.16,110,7.28,120,7.13,135,6.53,147.6,5.756057,150,5.61
10,40.3,6.542818,52,7.28,60,7.5,75,7.65,90,7.77,110,7.92,120,7.83,135,7.47,150,6.64,150.2,6.626214
12,38.9,6.913007,52,7.63,60,7.81,75,7.98,90,8.01,110,8.33,120,8.28,135,7.98,150,7.46,155.2,7.182377
14,38,7.030361,52,7.78,60,7.99,75,8.22,90,8.3,110,8.65,120,8.74,135,8.41,150,7.95,168.2,7.30436
16,37.7,7.090285,52,7.85,60,8.07,75,8.42,90,8.6,110,8.89,120,9.21,135,8.9,150,8.34,180,7.72
20,37.6,7.232204,52,7.92,60,8.13,75,8.61,90,9.12,110,9.35,120,9.8,135,10.03,150,9.27,180,8.51

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.49	5.81	6.07	6	6.02	5.86	5.28	4.46
8	6.54	6.86	7.1	7.16	7.28	7.13	6.53	5.61
10	7.28	7.5	7.65	7.77	7.92	7.83	7.47	6.64
12	7.63	7.81	7.98	8.01	8.33	8.28	7.98	7.46
14	7.78	7.99	8.22	8.3	8.65	8.74	8.41	7.95
16	7.85	8.07	8.42	8.6	8.89	9.21	8.9	8.34
20	7.92	8.13	8.61	9.12	9.35	9.8	10.03	9.27

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.7°	3.59	143.9°	3.86
8	41°	4.37	147.6°	4.86
10	40.3°	4.99	150.2°	5.75
12	38.9°	5.38	155.2°	6.52
14	38°	5.54	168.2°	7.15
16	37.7°	5.61	180°	7.72
20	37.6°	5.73	180°	8.51

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	5.49	6.54	7.28	7.63	7.78	7.85	7.92
60°	5.81	6.86	7.50	7.81	7.99	8.07	8.13
75°	6.07	7.10	7.65	7.98	8.22	8.42	8.61
90°	6.00	7.16	7.77	8.01	8.30	8.60	9.12
110°	6.02	7.28	7.92	8.33	8.65	8.89	9.35
120°	5.86	7.13	7.83	8.28	8.74	9.21	9.80
135°	5.28	6.53	7.47	7.98	8.41	8.90	10.03
150°	4.46	5.61	6.64	7.46	7.95	8.34	9.27