K'MENA: ORC Rating

GPH

613.1

OSN

595.3

LOA

9.95 m

Displacement

3905 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6798

Medium

0.8993

High

1.006

Triple Offshore

Low

0.8691

Medium

1.0988

High

1.2141

Boat Specifications

Dimensions

Length overall: 9.95 m
Beam: 3.41 m
Draft: 2.11 m
Displacement: 3905 kg
Crew weight: 563 kg
Wetted surface: 22.8 m²

Sails

Mainsail: 34.62 m²
Genoa: 27.01 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 101.13 m²

Design

Type: J 99
Builder: J Composites
Designer: JOHNSTON Alan
Year built: 2018
Stability index: 112.5

Performance data

Polar CSV

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

6,42.4,4.834416,52,5.39,60,5.65,75,5.8,90,5.86,110,5.94,120,5.79,135,5.2,143.9,4.727782,150,4.41
8,40.2,5.669053,52,6.33,60,6.53,75,6.66,90,6.83,110,6.96,120,6.86,135,6.4,147.8,5.684281,150,5.56
10,38.4,6.201404,52,6.85,60,7,75,7.11,90,7.24,110,7.47,120,7.43,135,7.14,149.2,6.542797,150,6.48
12,37.2,6.427882,52,7.1,60,7.26,75,7.41,90,7.45,110,7.85,120,7.89,135,7.64,150,7.08,150.3,7.057078
14,37,6.536148,52,7.21,60,7.4,75,7.63,90,7.73,110,8.15,120,8.33,135,8.13,150,7.44,169.4,6.561978
16,36.9,6.590098,52,7.28,60,7.48,75,7.8,90,7.98,110,8.39,120,8.76,135,8.65,150,7.78,174.5,6.992191
20,37.2,6.641307,52,7.33,60,7.57,75,7.98,90,8.38,110,8.85,120,9.51,135,10.23,150,8.52,175.7,7.711707

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.39	5.65	5.8	5.86	5.94	5.79	5.2	4.41
8	6.33	6.53	6.66	6.83	6.96	6.86	6.4	5.56
10	6.85	7	7.11	7.24	7.47	7.43	7.14	6.48
12	7.1	7.26	7.41	7.45	7.85	7.89	7.64	7.08
14	7.21	7.4	7.63	7.73	8.15	8.33	8.13	7.44
16	7.28	7.48	7.8	7.98	8.39	8.76	8.65	7.78
20	7.33	7.57	7.98	8.38	8.85	9.51	10.23	8.52

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.57	143.9°	3.82
8	40.2°	4.33	147.8°	4.81
10	38.4°	4.86	149.2°	5.62
12	37.2°	5.12	150.3°	6.13
14	37°	5.22	169.4°	6.45
16	36.9°	5.27	174.5°	6.96
20	37.2°	5.29	175.7°	7.69

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°	5.39	6.33	6.85	7.10	7.21	7.28	7.33
60°	5.65	6.53	7.00	7.26	7.40	7.48	7.57
75°	5.80	6.66	7.11	7.41	7.63	7.80	7.98
90°	5.86	6.83	7.24	7.45	7.73	7.98	8.38
110°	5.94	6.96	7.47	7.85	8.15	8.39	8.85
120°	5.79	6.86	7.43	7.89	8.33	8.76	9.51
135°	5.20	6.40	7.14	7.64	8.13	8.65	10.23
150°	4.41	5.56	6.48	7.08	7.44	7.78	8.52