NIMAR II: ORC Rating

GPH

671.5

OSN

652

LOA

9.5 m

Displacement

3843 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6818

Medium

0.9236

High

1.0538

Triple Offshore

Low

0.8767

Medium

1.1369

High

1.2636

Boat Specifications

Dimensions

Length overall: 9.5 m
Beam: 3.23 m
Draft: 1.92 m
Displacement: 3843 kg
Crew weight: 350 kg
Wetted surface: 22.27 m²

Sails

Mainsail: 26.26 m²
Genoa: 29.6 m²
Spinnaker: 60.04 m²
Asymmetric spinnaker: 0 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.

6,42.3,4.394082,52,4.91,60,5.17,75,5.36,90,5.3,110,5.18,120,5.02,135,4.53,146.5,3.993352,150,3.85
8,40.8,5.178369,52,5.83,60,6.1,75,6.29,90,6.25,110,6.28,120,6.12,135,5.58,150,4.88,150.5,4.860082
10,40.3,5.769218,52,6.42,60,6.62,75,6.76,90,6.8,110,6.89,120,6.8,135,6.44,150,5.76,152.8,5.621664
12,39.7,6.030677,52,6.66,60,6.84,75,7.02,90,7.07,110,7.25,120,7.19,135,6.92,150,6.5,157.7,6.171574
14,39.2,6.090759,52,6.74,60,6.94,75,7.2,90,7.31,110,7.6,120,7.56,135,7.28,150,6.93,180,6.34
16,39.2,6.129471,52,6.78,60,6.98,75,7.3,90,7.54,110,7.86,120,7.97,135,7.68,150,7.26,180,6.81
20,39.7,6.147651,52,6.79,60,6.99,75,7.37,90,7.86,110,8.22,120,8.61,135,8.59,150,8.04,180,7.48

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.91	5.17	5.36	5.3	5.18	5.02	4.53	3.85
8	5.83	6.1	6.29	6.25	6.28	6.12	5.58	4.88
10	6.42	6.62	6.76	6.8	6.89	6.8	6.44	5.76
12	6.66	6.84	7.02	7.07	7.25	7.19	6.92	6.5
14	6.74	6.94	7.2	7.31	7.6	7.56	7.28	6.93
16	6.78	6.98	7.3	7.54	7.86	7.97	7.68	7.26
20	6.79	6.99	7.37	7.86	8.22	8.61	8.59	8.04

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	3.25	146.5°	3.33
8	40.8°	3.92	150.5°	4.23
10	40.3°	4.4	152.8°	5
12	39.7°	4.64	157.7°	5.71
14	39.2°	4.72	180°	6.34
16	39.2°	4.75	180°	6.81
20	39.7°	4.73	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°	4.91	5.83	6.42	6.66	6.74	6.78	6.79
60°	5.17	6.10	6.62	6.84	6.94	6.98	6.99
75°	5.36	6.29	6.76	7.02	7.20	7.30	7.37
90°	5.30	6.25	6.80	7.07	7.31	7.54	7.86
110°	5.18	6.28	6.89	7.25	7.60	7.86	8.22
120°	5.02	6.12	6.80	7.19	7.56	7.97	8.61
135°	4.53	5.58	6.44	6.92	7.28	7.68	8.59
150°	3.85	4.88	5.76	6.50	6.93	7.26	8.04