Bowmore: ORC Rating

GPH

660.5

OSN

640.6

LOA

9.61 m

Displacement

3771 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.61

Medium

0.8366

High

0.9646

Triple Offshore

Low

0.7882

Medium

1.0277

High

1.1554

Boat Specifications

Dimensions

Length overall: 9.61 m
Beam: 3.21 m
Draft: 1.93 m
Displacement: 3771 kg
Crew weight: 585 kg
Wetted surface: 21.99 m²

Sails

Mainsail: 25.54 m²
Genoa: 31.19 m²
Spinnaker: 60.92 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.

6,42.8,4.456681,52,5,60,5.29,75,5.51,90,5.44,110,5.24,120,5.08,135,4.58,146,4.04083,150,3.87
8,41.2,5.236473,52,5.91,60,6.2,75,6.41,90,6.39,110,6.36,120,6.19,135,5.65,150,4.907477
10,40.5,5.878439,52,6.51,60,6.69,75,6.84,90,6.87,110,6.95,120,6.87,135,6.51,150,5.81,152,5.708153
12,38.8,6.171905,52,6.8,60,6.95,75,7.11,90,7.19,110,7.34,120,7.26,135,6.99,150,6.55,157.5,6.223755
14,38.1,6.264812,52,6.91,60,7.1,75,7.33,90,7.42,110,7.75,120,7.67,135,7.36,150,6.99,180,6.38
16,37.9,6.311114,52,6.96,60,7.17,75,7.51,90,7.7,110,8.13,120,8.12,135,7.78,150,7.33,180,6.86
20,38.2,6.273407,52,6.98,60,7.2,75,7.65,90,8.14,110,8.62,120,9.04,135,8.74,150,8.13,180,7.54

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5	5.29	5.51	5.44	5.24	5.08	4.58	3.87
8	5.91	6.2	6.41	6.39	6.36	6.19	5.65	4.91
10	6.51	6.69	6.84	6.87	6.95	6.87	6.51	5.81
12	6.8	6.95	7.11	7.19	7.34	7.26	6.99	6.55
14	6.91	7.1	7.33	7.42	7.75	7.67	7.36	6.99
16	6.96	7.17	7.51	7.7	8.13	8.12	7.78	7.33
20	6.98	7.2	7.65	8.14	8.62	9.04	8.74	8.13

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.27	146°	3.35
8	41.2°	3.94	150°	4.25
10	40.5°	4.47	152°	5.04
12	38.8°	4.81	157.5°	5.75
14	38.1°	4.93	180°	6.38
16	37.9°	4.98	180°	6.86
20	38.2°	4.93	180°	7.54

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°	5.00	5.91	6.51	6.80	6.91	6.96	6.98
60°	5.29	6.20	6.69	6.95	7.10	7.17	7.20
75°	5.51	6.41	6.84	7.11	7.33	7.51	7.65
90°	5.44	6.39	6.87	7.19	7.42	7.70	8.14
110°	5.24	6.36	6.95	7.34	7.75	8.13	8.62
120°	5.08	6.19	6.87	7.26	7.67	8.12	9.04
135°	4.58	5.65	6.51	6.99	7.36	7.78	8.74
150°	3.87	4.91	5.81	6.55	6.99	7.33	8.13