SNATCH N' FURIOUS: ORC Rating

GPH

606.2

OSN

587.9

LOA

10 m

Displacement

2947 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6816

Medium

0.9152

High

1.0433

Triple Offshore

Low

0.8735

Medium

1.1118

High

1.2497

Boat Specifications

Dimensions

Length overall: 10 m
Beam: 3.75 m
Draft: 2.42 m
Displacement: 2947 kg
Crew weight: 500 kg
Wetted surface: 21.58 m²

Sails

Mainsail: 35.05 m²
Genoa: 26.8 m²
Spinnaker: 101.15 m²
Asymmetric spinnaker: 0 m²

Design

Type: ROCKET 31 Mod
Builder: JIM DARREN
Designer: YOUNG Jim
Year built: 1985
Stability index: 97.9

Performance data

Polar CSV

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

6,42.4,4.807332,52,5.38,60,5.66,75,5.86,90,5.88,110,6,120,5.85,135,5.28,142,4.9111,150,4.47
8,40.6,5.702836,52,6.39,60,6.6,75,6.74,90,6.84,110,7,120,6.92,135,6.51,147.8,5.707917,150,5.58
10,38.4,6.239685,52,6.88,60,7.03,75,7.15,90,7.16,110,7.52,120,7.52,135,7.2,150,6.58,151.4,6.503543
12,37,6.410935,52,7.07,60,7.27,75,7.5,90,7.55,110,7.89,120,8.1,135,7.79,150,7.21,159.2,6.846196
14,36.4,6.485328,52,7.17,60,7.4,75,7.79,90,7.96,110,8.21,120,8.56,135,8.46,150,7.76,171.8,7.011686
16,36,6.526439,52,7.23,60,7.49,75,7.95,90,8.32,110,8.5,120,8.94,135,9.23,150,8.37,173.6,7.466532
20,35.8,6.583946,52,7.32,60,7.58,75,8.12,90,8.75,110,9.04,120,9.67,135,10.86,150,9.88,152.3,9.679311

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.38	5.66	5.86	5.88	6	5.85	5.28	4.47
8	6.39	6.6	6.74	6.84	7	6.92	6.51	5.58
10	6.88	7.03	7.15	7.16	7.52	7.52	7.2	6.58
12	7.07	7.27	7.5	7.55	7.89	8.1	7.79	7.21
14	7.17	7.4	7.79	7.96	8.21	8.56	8.46	7.76
16	7.23	7.49	7.95	8.32	8.5	8.94	9.23	8.37
20	7.32	7.58	8.12	8.75	9.04	9.67	10.86	9.88

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.55	142°	3.87
8	40.6°	4.33	147.8°	4.83
10	38.4°	4.89	151.4°	5.71
12	37°	5.12	159.2°	6.4
14	36.4°	5.22	171.8°	6.94
16	36°	5.28	173.6°	7.42
20	35.8°	5.34	152.3°	8.57

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°	5.38	6.39	6.88	7.07	7.17	7.23	7.32
60°	5.66	6.60	7.03	7.27	7.40	7.49	7.58
75°	5.86	6.74	7.15	7.50	7.79	7.95	8.12
90°	5.88	6.84	7.16	7.55	7.96	8.32	8.75
110°	6.00	7.00	7.52	7.89	8.21	8.50	9.04
120°	5.85	6.92	7.52	8.10	8.56	8.94	9.67
135°	5.28	6.51	7.20	7.79	8.46	9.23	10.86
150°	4.47	5.58	6.58	7.21	7.76	8.37	9.88