GRACE: ORC Rating

GPH

702.1

OSN

679.2

LOA

9.435 m

Displacement

4850 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5672

Medium

0.7774

High

0.9085

Triple Offshore

Low

0.7331

Medium

0.971

High

1.0999

Boat Specifications

Dimensions

Length overall: 9.435 m
Beam: 3.33 m
Draft: 1.85 m
Displacement: 4850 kg
Crew weight: 450 kg
Wetted surface: 22.4 m²

Sails

Mainsail: 24.8 m²
Genoa: 23.52 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 60.47 m²

Design

Type: Oceanis 31
Builder: Beneteau
Designer: Finot/Conq
Year built: 2016
Stability index: 120.9

Performance data

Polar CSV

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

6,44.4,4.072934,52,4.49,60,4.75,75,4.91,90,5.02,110,5.05,120,4.87,135,4.39,145.2,3.933512,150,3.73
8,42.4,4.834416,52,5.38,60,5.64,75,5.83,90,6.04,110,6.12,120,5.95,135,5.46,146.9,4.918119,150,4.76
10,41.1,5.387735,52,6.01,60,6.24,75,6.43,90,6.68,110,6.77,120,6.67,135,6.3,146.9,5.777596,150,5.59
12,40.2,5.799978,52,6.42,60,6.61,75,6.78,90,7.04,110,7.15,120,7.09,135,6.84,147.5,6.379007,150,6.22
14,39.4,6.04348,52,6.67,60,6.84,75,7.01,90,7.26,110,7.47,120,7.43,135,7.2,150,6.64,167.6,5.887338
16,39,6.137843,52,6.8,60,6.98,75,7.19,90,7.39,110,7.76,120,7.75,135,7.53,150,6.95,173.6,6.339508
20,39.3,6.202831,52,6.87,60,7.1,75,7.44,90,7.63,110,8.22,120,8.38,135,8.18,150,7.46,177.2,7.008367

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.49	4.75	4.91	5.02	5.05	4.87	4.39	3.73
8	5.38	5.64	5.83	6.04	6.12	5.95	5.46	4.76
10	6.01	6.24	6.43	6.68	6.77	6.67	6.3	5.59
12	6.42	6.61	6.78	7.04	7.15	7.09	6.84	6.22
14	6.67	6.84	7.01	7.26	7.47	7.43	7.2	6.64
16	6.8	6.98	7.19	7.39	7.76	7.75	7.53	6.95
20	6.87	7.1	7.44	7.63	8.22	8.38	8.18	7.46

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.4°	2.91	145.2°	3.23
8	42.4°	3.57	146.9°	4.12
10	41.1°	4.06	146.9°	4.84
12	40.2°	4.43	147.5°	5.38
14	39.4°	4.67	167.6°	5.75
16	39°	4.77	173.6°	6.3
20	39.3°	4.8	177.2°	7

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°	4.49	5.38	6.01	6.42	6.67	6.80	6.87
60°	4.75	5.64	6.24	6.61	6.84	6.98	7.10
75°	4.91	5.83	6.43	6.78	7.01	7.19	7.44
90°	5.02	6.04	6.68	7.04	7.26	7.39	7.63
110°	5.05	6.12	6.77	7.15	7.47	7.76	8.22
120°	4.87	5.95	6.67	7.09	7.43	7.75	8.38
135°	4.39	5.46	6.30	6.84	7.20	7.53	8.18
150°	3.73	4.76	5.59	6.22	6.64	6.95	7.46