GEISHA: ORC Rating

GPH

547.3

OSN

529.1

LOA

15 m

Displacement

13002 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7292

Medium

1.0071

High

1.1588

Triple Offshore

Low

0.9425

Medium

1.2462

High

1.4029

Boat Specifications

Dimensions

Length overall: 15 m
Beam: 4.36 m
Draft: 2.79 m
Displacement: 13002 kg
Crew weight: 900 kg
Wetted surface: 46.44 m²

Sails

Mainsail: 69.12 m²
Genoa: 50.19 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 185.76 m²

Design

Type: First 50
Builder: Beneteau
Designer: Briand
Year built: 2006

Performance data

Polar CSV

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

6,43.4,5.23002,52,5.82,60,6.16,75,6.4,90,6.33,110,6.44,120,6.28,135,5.61,142.4,5.149632,150,4.71
8,41.4,6.252407,52,6.99,60,7.29,75,7.51,90,7.63,110,7.79,120,7.65,135,7.03,145.6,6.302163,150,6
10,39.9,6.986762,52,7.79,60,8.03,75,8.2,90,8.37,110,8.58,120,8.49,135,8.06,148,7.263739,150,7.12
12,38.6,7.421431,52,8.25,60,8.46,75,8.62,90,8.71,110,9.05,120,9.01,135,8.7,149.7,8.014866,150,7.99
14,37.8,7.631414,52,8.5,60,8.71,75,8.92,90,8.95,110,9.44,120,9.48,135,9.18,150,8.53,150.3,8.507635
16,37.6,7.774934,52,8.62,60,8.86,75,9.15,90,9.24,110,9.7,120,9.93,135,9.67,150,8.9,151.4,8.781491
20,37.4,7.905192,52,8.75,60,9.01,75,9.44,90,9.75,110,10.16,120,10.66,135,10.76,150,9.58,175.8,8.7134
24,37.8,7.973119,52,8.8,60,9.08,75,9.59,90,10.11,110,10.57,120,11.27,135,12.27,150,10.38,175.7,9.426534

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.82	6.16	6.4	6.33	6.44	6.28	5.61	4.71
8	6.99	7.29	7.51	7.63	7.79	7.65	7.03	6
10	7.79	8.03	8.2	8.37	8.58	8.49	8.06	7.12
12	8.25	8.46	8.62	8.71	9.05	9.01	8.7	7.99
14	8.5	8.71	8.92	8.95	9.44	9.48	9.18	8.53
16	8.62	8.86	9.15	9.24	9.7	9.93	9.67	8.9
20	8.75	9.01	9.44	9.75	10.16	10.66	10.76	9.58
24	8.8	9.08	9.59	10.11	10.57	11.27	12.27	10.38

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.4°	3.8	142.4°	4.08
8	41.4°	4.69	145.6°	5.2
10	39.9°	5.36	148°	6.16
12	38.6°	5.8	149.7°	6.92
14	37.8°	6.03	150.3°	7.39
16	37.6°	6.16	151.4°	7.71
20	37.4°	6.28	175.8°	8.69
24	37.8°	6.3	175.7°	9.4

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 kt24 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)	Boat speed in 24 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	5.82	6.99	7.79	8.25	8.50	8.62	8.75	8.80
60°	6.16	7.29	8.03	8.46	8.71	8.86	9.01	9.08
75°	6.40	7.51	8.20	8.62	8.92	9.15	9.44	9.59
90°	6.33	7.63	8.37	8.71	8.95	9.24	9.75	10.11
110°	6.44	7.79	8.58	9.05	9.44	9.70	10.16	10.57
120°	6.28	7.65	8.49	9.01	9.48	9.93	10.66	11.27
135°	5.61	7.03	8.06	8.70	9.18	9.67	10.76	12.27
150°	4.71	6.00	7.12	7.99	8.53	8.90	9.58	10.38