RAJETA: ORC Rating

GPH

670.8

OSN

649.1

LOA

9.5 m

Displacement

3900 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6746

Medium

0.9289

High

1.0757

Triple Offshore

Low

0.8679

Medium

1.1413

High

1.2856

Boat Specifications

Dimensions

Length overall: 9.5 m
Beam: 3.23 m
Draft: 1.93 m
Displacement: 3900 kg
Crew weight: 420 kg
Wetted surface: 22.39 m²

Sails

Mainsail: 26.6 m²
Genoa: 28.26 m²
Spinnaker: 60.87 m²
Asymmetric spinnaker: 53 m²

Design

Type: FIRST 31.7
Builder: BENETEAU
Designer: FINOT
Year built: 1998

Performance data

Polar CSV

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

6,42.6,4.306497,52,4.82,60,5.07,75,5.28,90,5.22,110,5.16,120,5,135,4.53,146.5,3.993352,150,3.85
8,40.9,5.08035,52,5.74,60,6.02,75,6.22,90,6.22,110,6.27,120,6.1,135,5.58,150,4.89,150.6,4.855295
10,40.7,5.76415,52,6.4,60,6.59,75,6.73,90,6.84,110,6.88,120,6.79,135,6.44,150,5.77,152.7,5.637973
12,39,6.086373,52,6.71,60,6.87,75,7.01,90,7.16,110,7.26,120,7.18,135,6.93,150,6.5,157.6,6.176004
14,38.2,6.197057,52,6.85,60,7.02,75,7.22,90,7.38,110,7.63,120,7.57,135,7.28,150,6.93,180,6.34
16,37.8,6.239282,52,6.9,60,7.1,75,7.4,90,7.56,110,8.02,120,7.99,135,7.68,150,7.26,180,6.81
20,38.5,6.248338,52,6.92,60,7.14,75,7.56,90,8,110,8.55,120,8.86,135,8.59,150,8.03,180,7.48

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.82	5.07	5.28	5.22	5.16	5	4.53	3.85
8	5.74	6.02	6.22	6.22	6.27	6.1	5.58	4.89
10	6.4	6.59	6.73	6.84	6.88	6.79	6.44	5.77
12	6.71	6.87	7.01	7.16	7.26	7.18	6.93	6.5
14	6.85	7.02	7.22	7.38	7.63	7.57	7.28	6.93
16	6.9	7.1	7.4	7.56	8.02	7.99	7.68	7.26
20	6.92	7.14	7.56	8	8.55	8.86	8.59	8.03

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.17	146.5°	3.33
8	40.9°	3.84	150.6°	4.23
10	40.7°	4.37	152.7°	5.01
12	39°	4.73	157.6°	5.71
14	38.2°	4.87	180°	6.34
16	37.8°	4.93	180°	6.81
20	38.5°	4.89	180°	7.48

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°	4.82	5.74	6.40	6.71	6.85	6.90	6.92
60°	5.07	6.02	6.59	6.87	7.02	7.10	7.14
75°	5.28	6.22	6.73	7.01	7.22	7.40	7.56
90°	5.22	6.22	6.84	7.16	7.38	7.56	8.00
110°	5.16	6.27	6.88	7.26	7.63	8.02	8.55
120°	5.00	6.10	6.79	7.18	7.57	7.99	8.86
135°	4.53	5.58	6.44	6.93	7.28	7.68	8.59
150°	3.85	4.89	5.77	6.50	6.93	7.26	8.03