J LANCE 25: ORC Rating

GPH

614.6

OSN

595.1

LOA

9.95 m

Displacement

4079 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6688

Medium

0.9052

High

1.0335

Triple Offshore

Low

0.8582

Medium

1.0997

High

1.2278

Boat Specifications

Dimensions

Length overall: 9.95 m
Beam: 3.41 m
Draft: 2.12 m
Displacement: 4079 kg
Crew weight: 572 kg
Wetted surface: 23.17 m²

Sails

Mainsail: 33.97 m²
Genoa: 25.91 m²
Spinnaker: 92.44 m²
Asymmetric spinnaker: 78.17 m²

Design

Type: J 99
Builder: J COMPOSITES
Designer: JOHNSTONE
Year built: 2018
Stability index: 113.4

Performance data

Polar CSV

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

6,42.9,4.791528,52,5.31,60,5.57,75,5.8,90,5.98,110,5.79,120,5.65,135,5.11,141.7,4.765689,150,4.32
8,40.6,5.636984,52,6.27,60,6.47,75,6.73,90,6.88,110,6.85,120,6.74,135,6.29,148.7,5.535668,150,5.47
10,38.7,6.188893,52,6.82,60,6.96,75,7.18,90,7.34,110,7.39,120,7.33,135,7.03,150,6.42,152.9,6.268164
12,37,6.435977,52,7.1,60,7.24,75,7.42,90,7.67,110,7.8,120,7.78,135,7.52,150,7.07,159.2,6.696436
14,36.6,6.551925,52,7.24,60,7.41,75,7.61,90,7.93,110,8.15,120,8.21,135,7.98,150,7.51,173,6.881292
16,36.4,6.609568,52,7.31,60,7.51,75,7.8,90,8.1,110,8.44,120,8.65,135,8.44,150,7.95,177.2,7.298714
20,36.6,6.66403,52,7.37,60,7.6,75,8,90,8.36,110,9.19,120,9.56,135,9.7,150,8.91,177.2,8.09967

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.31	5.57	5.8	5.98	5.79	5.65	5.11	4.32
8	6.27	6.47	6.73	6.88	6.85	6.74	6.29	5.47
10	6.82	6.96	7.18	7.34	7.39	7.33	7.03	6.42
12	7.1	7.24	7.42	7.67	7.8	7.78	7.52	7.07
14	7.24	7.41	7.61	7.93	8.15	8.21	7.98	7.51
16	7.31	7.51	7.8	8.1	8.44	8.65	8.44	7.95
20	7.37	7.6	8	8.36	9.19	9.56	9.7	8.91

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	3.51	141.7°	3.74
8	40.6°	4.28	148.7°	4.73
10	38.7°	4.83	152.9°	5.58
12	37°	5.14	159.2°	6.26
14	36.6°	5.26	173°	6.83
16	36.4°	5.32	177.2°	7.29
20	36.6°	5.35	177.2°	8.09

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°	5.31	6.27	6.82	7.10	7.24	7.31	7.37
60°	5.57	6.47	6.96	7.24	7.41	7.51	7.60
75°	5.80	6.73	7.18	7.42	7.61	7.80	8.00
90°	5.98	6.88	7.34	7.67	7.93	8.10	8.36
110°	5.79	6.85	7.39	7.80	8.15	8.44	9.19
120°	5.65	6.74	7.33	7.78	8.21	8.65	9.56
135°	5.11	6.29	7.03	7.52	7.98	8.44	9.70
150°	4.32	5.47	6.42	7.07	7.51	7.95	8.91