DARK STORM: ORC Rating

GPH

541.2

OSN

525.2

LOA

12.19 m

Displacement

6097 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7629

Medium

1.0155

High

1.1515

Triple Offshore

Low

0.9784

Medium

1.2464

High

1.3976

Boat Specifications

Dimensions

Length overall: 12.19 m
Beam: 3.75 m
Draft: 2.35 m
Displacement: 6097 kg
Crew weight: 818 kg
Wetted surface: 32.92 m²

Sails

Mainsail: 51.69 m²
Genoa: 43.83 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 172.66 m²

Design

Type: J 121
Builder: CCF
Designer: JOHNSTONE
Year built: 2017
Stability index: 124.5

Performance data

Polar CSV

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

6,42.9,5.487733,52,6.12,60,6.45,75,6.66,90,6.51,110,6.62,120,6.47,135,5.81,143,5.309055,150,4.9
8,40.6,6.479897,52,7.25,60,7.49,75,7.64,90,7.61,110,7.83,120,7.76,135,7.25,146,6.47739,150,6.2
10,38.7,7.021766,52,7.79,60,7.98,75,8.14,90,8.13,110,8.45,120,8.46,135,8.12,149.3,7.3501,150,7.3
12,37.5,7.197297,52,8.02,60,8.25,75,8.5,90,8.56,110,8.9,120,9.06,135,8.8,150,8.08,151.4,7.984209
14,37,7.312472,52,8.14,60,8.4,75,8.78,90,8.95,110,9.24,120,9.62,135,9.5,149.2,8.684922,150,8.61
16,37,7.412643,52,8.22,60,8.5,75,8.96,90,9.29,110,9.58,120,10.07,135,10.32,147.1,9.468571,150,9.18
20,37,7.47525,52,8.31,60,8.63,75,9.19,90,9.8,110,10.23,120,11,135,12.31,143.7,11.700793,150,10.89

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.12	6.45	6.66	6.51	6.62	6.47	5.81	4.9
8	7.25	7.49	7.64	7.61	7.83	7.76	7.25	6.2
10	7.79	7.98	8.14	8.13	8.45	8.46	8.12	7.3
12	8.02	8.25	8.5	8.56	8.9	9.06	8.8	8.08
14	8.14	8.4	8.78	8.95	9.24	9.62	9.5	8.61
16	8.22	8.5	8.96	9.29	9.58	10.07	10.32	9.18
20	8.31	8.63	9.19	9.8	10.23	11	12.31	10.89

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	4.02	143°	4.24
8	40.6°	4.92	146°	5.37
10	38.7°	5.48	149.3°	6.32
12	37.5°	5.71	151.4°	7.01
14	37°	5.84	149.2°	7.46
16	37°	5.92	147.1°	7.95
20	37°	5.97	143.7°	9.43

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°	6.12	7.25	7.79	8.02	8.14	8.22	8.31
60°	6.45	7.49	7.98	8.25	8.40	8.50	8.63
75°	6.66	7.64	8.14	8.50	8.78	8.96	9.19
90°	6.51	7.61	8.13	8.56	8.95	9.29	9.80
110°	6.62	7.83	8.45	8.90	9.24	9.58	10.23
120°	6.47	7.76	8.46	9.06	9.62	10.07	11.00
135°	5.81	7.25	8.12	8.80	9.50	10.32	12.31
150°	4.90	6.20	7.30	8.08	8.61	9.18	10.89