Jitters: ORC Rating

GPH

619

OSN

601.7

LOA

10.757 m

Displacement

4858 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7419

Medium

0.9974

High

1.132

Triple Offshore

Low

0.9569

Medium

1.2296

High

1.3675

Boat Specifications

Dimensions

Length overall: 10.757 m
Beam: 3.52 m
Draft: 2.12 m
Displacement: 4858 kg
Crew weight: 629 kg
Wetted surface: 25.92 m²

Sails

Mainsail: 36.85 m²
Genoa: 29.36 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 91.86 m²

Design

Type: J-109
Builder: J-Composite
Designer: Johnstone
Year built: 2001

Performance data

Polar CSV

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

6,42.7,4.653602,52,5.22,60,5.53,75,5.76,90,5.79,110,5.85,120,5.69,135,5.13,144.4,4.636572,150,4.35
8,41.1,5.493897,52,6.2,60,6.49,75,6.7,90,6.87,110,6.97,120,6.84,135,6.32,148,5.565722,150,5.45
10,40.2,6.17966,52,6.85,60,7.03,75,7.18,90,7.36,110,7.49,120,7.41,135,7.11,148.8,6.488464,150,6.41
12,38.5,6.46556,52,7.14,60,7.3,75,7.47,90,7.58,110,7.92,120,7.87,135,7.56,150,7.04,150.3,7.022541
14,38.2,6.591531,52,7.25,60,7.45,75,7.7,90,7.79,110,8.31,120,8.36,135,8.02,150,7.4,173.9,6.476671
16,38,6.636965,52,7.3,60,7.51,75,7.88,90,8.08,110,8.56,120,8.84,135,8.52,150,7.7,177,7.009606
20,37.7,6.736402,52,7.38,60,7.58,75,8.03,90,8.53,110,8.99,120,9.53,135,9.71,150,8.5,177.7,7.706208

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.22	5.53	5.76	5.79	5.85	5.69	5.13	4.35
8	6.2	6.49	6.7	6.87	6.97	6.84	6.32	5.45
10	6.85	7.03	7.18	7.36	7.49	7.41	7.11	6.41
12	7.14	7.3	7.47	7.58	7.92	7.87	7.56	7.04
14	7.25	7.45	7.7	7.79	8.31	8.36	8.02	7.4
16	7.3	7.51	7.88	8.08	8.56	8.84	8.52	7.7
20	7.38	7.58	8.03	8.53	8.99	9.53	9.71	8.5

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.7°	3.42	144.4°	3.77
8	41.1°	4.14	148°	4.72
10	40.2°	4.72	148.8°	5.55
12	38.5°	5.06	150.3°	6.1
14	38.2°	5.18	173.9°	6.44
16	38°	5.23	177°	7
20	37.7°	5.33	177.7°	7.7

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°	5.22	6.20	6.85	7.14	7.25	7.30	7.38
60°	5.53	6.49	7.03	7.30	7.45	7.51	7.58
75°	5.76	6.70	7.18	7.47	7.70	7.88	8.03
90°	5.79	6.87	7.36	7.58	7.79	8.08	8.53
110°	5.85	6.97	7.49	7.92	8.31	8.56	8.99
120°	5.69	6.84	7.41	7.87	8.36	8.84	9.53
135°	5.13	6.32	7.11	7.56	8.02	8.52	9.71
150°	4.35	5.45	6.41	7.04	7.40	7.70	8.50