JAMBO: ORC Rating

GPH

642.8

OSN

624.8

LOA

9.598 m

Displacement

3645 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7164

Medium

0.9618

High

1.0849

Triple Offshore

Low

0.923

Medium

1.1837

High

1.3126

Boat Specifications

Dimensions

Length overall: 9.598 m
Beam: 3.35 m
Draft: 1.9 m
Displacement: 3645 kg
Crew weight: 530 kg
Wetted surface: 20.86 m²

Sails

Mainsail: 28.9 m²
Genoa: 25.06 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 94.93 m²

Design

Type: J-97 Carb Mast
Builder: J-EUROPE
Designer: JOHNSTONE Alan
Year built: 2009

Performance data

Polar CSV

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

6,42.2,4.400621,52,4.93,60,5.19,75,5.4,90,5.64,110,5.74,120,5.59,135,5.02,145.3,4.500428,150,4.27
8,41.1,5.228492,52,5.9,60,6.17,75,6.36,90,6.67,110,6.77,120,6.67,135,6.2,147.9,5.45376,150,5.34
10,40.5,5.917891,52,6.54,60,6.72,75,6.84,90,7.06,110,7.26,120,7.19,135,6.91,148.6,6.36166,150,6.27
12,38.9,6.219136,52,6.83,60,6.99,75,7.14,90,7.24,110,7.67,120,7.66,135,7.34,150,6.83,150.6,6.795117
14,38.5,6.325004,52,6.96,60,7.15,75,7.38,90,7.44,110,7.95,120,8.12,135,7.81,150,7.15,174.5,6.329138
16,38.4,6.367286,52,7.01,60,7.23,75,7.58,90,7.74,110,8.19,120,8.53,135,8.31,150,7.46,177,6.809332
20,39.1,6.442914,52,7.02,60,7.27,75,7.76,90,8.2,110,8.59,120,9.09,135,9.55,150,8.31,177.3,7.478302

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.93	5.19	5.4	5.64	5.74	5.59	5.02	4.27
8	5.9	6.17	6.36	6.67	6.77	6.67	6.2	5.34
10	6.54	6.72	6.84	7.06	7.26	7.19	6.91	6.27
12	6.83	6.99	7.14	7.24	7.67	7.66	7.34	6.83
14	6.96	7.15	7.38	7.44	7.95	8.12	7.81	7.15
16	7.01	7.23	7.58	7.74	8.19	8.53	8.31	7.46
20	7.02	7.27	7.76	8.2	8.59	9.09	9.55	8.31

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.2°	3.26	145.3°	3.7
8	41.1°	3.94	147.9°	4.62
10	40.5°	4.5	148.6°	5.43
12	38.9°	4.84	150.6°	5.92
14	38.5°	4.95	174.5°	6.3
16	38.4°	4.99	177°	6.8
20	39.1°	5	177.3°	7.47

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°	4.93	5.90	6.54	6.83	6.96	7.01	7.02
60°	5.19	6.17	6.72	6.99	7.15	7.23	7.27
75°	5.40	6.36	6.84	7.14	7.38	7.58	7.76
90°	5.64	6.67	7.06	7.24	7.44	7.74	8.20
110°	5.74	6.77	7.26	7.67	7.95	8.19	8.59
120°	5.59	6.67	7.19	7.66	8.12	8.53	9.09
135°	5.02	6.20	6.91	7.34	7.81	8.31	9.55
150°	4.27	5.34	6.27	6.83	7.15	7.46	8.31