Summersalt: ORC Rating

GPH

605.8

OSN

589.6

LOA

9.424 m

Displacement

2600 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7697

Medium

1.0216

High

1.1604

Triple Offshore

Low

0.9885

Medium

1.2474

High

1.4061

Boat Specifications

Dimensions

Length overall: 9.424 m
Beam: 3.07 m
Draft: 2.27 m
Displacement: 2600 kg
Crew weight: 540 kg
Wetted surface: 19.19 m²

Sails

Mainsail: 34.7 m²
Genoa: 23.25 m²
Spinnaker: 85.33 m²
Asymmetric spinnaker: 0 m²

Design

Type: Custom
Builder: G Goetzee
Designer: Will Hardcastle
Year built: 2002

Performance data

Polar CSV

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

6,42.3,4.826731,52,5.43,60,5.76,75,6.05,90,6.03,110,6.04,120,5.87,135,5.3,143.2,4.858059,150,4.49
8,41.4,5.745816,52,6.42,60,6.65,75,6.81,90,6.9,110,6.96,120,6.86,135,6.48,147.4,5.780742,150,5.62
10,39,6.227916,52,6.87,60,7.05,75,7.23,90,7.24,110,7.55,120,7.44,135,7.09,150,6.55,153.4,6.385923
12,37.5,6.365386,52,7.04,60,7.28,75,7.64,90,7.7,110,7.91,120,8.11,135,7.64,150,7.1,162.6,6.633549
14,36.8,6.43162,52,7.13,60,7.41,75,7.91,90,8.17,110,8.26,120,8.58,135,8.3,150,7.61,180,6.9
16,36.3,6.477003,52,7.19,60,7.48,75,8.05,90,8.57,110,8.62,120,8.97,135,9.09,150,8.2,180,7.36
20,36.5,6.555894,52,7.33,60,7.68,75,8.18,90,8.92,110,9.37,120,9.87,135,10.94,150,9.71,180,8.44

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.43	5.76	6.05	6.03	6.04	5.87	5.3	4.49
8	6.42	6.65	6.81	6.9	6.96	6.86	6.48	5.62
10	6.87	7.05	7.23	7.24	7.55	7.44	7.09	6.55
12	7.04	7.28	7.64	7.7	7.91	8.11	7.64	7.1
14	7.13	7.41	7.91	8.17	8.26	8.58	8.3	7.61
16	7.19	7.48	8.05	8.57	8.62	8.97	9.09	8.2
20	7.33	7.68	8.18	8.92	9.37	9.87	10.94	9.71

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	3.57	143.2°	3.89
8	41.4°	4.31	147.4°	4.87
10	39°	4.84	153.4°	5.71
12	37.5°	5.05	162.6°	6.33
14	36.8°	5.15	180°	6.9
16	36.3°	5.22	180°	7.36
20	36.5°	5.27	180°	8.44

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°	5.43	6.42	6.87	7.04	7.13	7.19	7.33
60°	5.76	6.65	7.05	7.28	7.41	7.48	7.68
75°	6.05	6.81	7.23	7.64	7.91	8.05	8.18
90°	6.03	6.90	7.24	7.70	8.17	8.57	8.92
110°	6.04	6.96	7.55	7.91	8.26	8.62	9.37
120°	5.87	6.86	7.44	8.11	8.58	8.97	9.87
135°	5.30	6.48	7.09	7.64	8.30	9.09	10.94
150°	4.49	5.62	6.55	7.10	7.61	8.20	9.71