MAMA TRIED: ORC Rating

GPH

601.5

OSN

584.6

LOA

10.4 m

Displacement

2860 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6738

Medium

0.9091

High

1.0424

Triple Offshore

Low

0.8747

Medium

1.1226

High

1.2741

Boat Specifications

Dimensions

Length overall: 10.4 m
Beam: 3.06 m
Draft: 1.81 m
Displacement: 2860 kg
Crew weight: 570 kg
Wetted surface: 21.38 m²

Sails

Mainsail: 34.99 m²
Genoa: 35.4 m²
Spinnaker: 65.51 m²
Asymmetric spinnaker: 0 m²

Design

Type: First Class 10
Builder: Beneteau
Designer: Finot
Year built: 1983
Stability index: 111.6

Performance data

Polar CSV

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

6,43.2,5.075664,52,5.67,60,6.02,75,6.31,90,6.25,110,5.76,120,5.57,135,4.97,140.3,4.665976,150,4.14
8,42,6.068804,52,6.71,60,6.92,75,7.06,90,7.07,110,6.94,120,6.8,135,6.22,147.5,5.406742,150,5.27
10,40,6.487874,52,7.11,60,7.3,75,7.49,90,7.52,110,7.55,120,7.42,135,7.04,150,6.3,150.2,6.292023
12,38.4,6.609727,52,7.28,60,7.52,75,7.89,90,8.02,110,8.17,120,8.05,135,7.57,150,7.05,157.4,6.73736
14,37.6,6.676851,52,7.38,60,7.66,75,8.14,90,8.48,110,8.76,120,8.75,135,8.17,150,7.55,170,6.925209
16,37.5,6.718318,52,7.45,60,7.76,75,8.31,90,8.86,110,9.15,120,9.5,135,8.86,150,8.11,177.2,7.32875
20,37.5,6.819156,52,7.58,60,7.91,75,8.49,90,9.26,110,10.12,120,10.61,135,10.66,150,9.45,173.9,8.377433

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.67	6.02	6.31	6.25	5.76	5.57	4.97	4.14
8	6.71	6.92	7.06	7.07	6.94	6.8	6.22	5.27
10	7.11	7.3	7.49	7.52	7.55	7.42	7.04	6.3
12	7.28	7.52	7.89	8.02	8.17	8.05	7.57	7.05
14	7.38	7.66	8.14	8.48	8.76	8.75	8.17	7.55
16	7.45	7.76	8.31	8.86	9.15	9.5	8.86	8.11
20	7.58	7.91	8.49	9.26	10.12	10.61	10.66	9.45

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.7	140.3°	3.59
8	42°	4.51	147.5°	4.56
10	40°	4.97	150.2°	5.46
12	38.4°	5.18	157.4°	6.22
14	37.6°	5.29	170°	6.82
16	37.5°	5.33	177.2°	7.32
20	37.5°	5.41	173.9°	8.33

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°	5.67	6.71	7.11	7.28	7.38	7.45	7.58
60°	6.02	6.92	7.30	7.52	7.66	7.76	7.91
75°	6.31	7.06	7.49	7.89	8.14	8.31	8.49
90°	6.25	7.07	7.52	8.02	8.48	8.86	9.26
110°	5.76	6.94	7.55	8.17	8.76	9.15	10.12
120°	5.57	6.80	7.42	8.05	8.75	9.50	10.61
135°	4.97	6.22	7.04	7.57	8.17	8.86	10.66
150°	4.14	5.27	6.30	7.05	7.55	8.11	9.45