Firestorm — ORC Rating

GPH

618.1

OSN

600.7

LOA

10.757 m

Displacement

5255 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7458

Medium

1.0005

High

1.1352

Triple Offshore

Low

0.9597

Medium

1.2312

High

1.3659

Boat Specifications

Dimensions

Length overall: 10.757 m
Beam: 3.52 m
Draft: 2.14 m
Displacement: 5255 kg
Crew weight: 643 kg
Wetted surface: 26.55 m²

Sails

Mainsail: 38.1 m²
Genoa: 32.04 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 108.45 m²

Design

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

Velocity Prediction

Polar CSV

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

6,42.3,4.664488,52,5.22,60,5.49,75,5.71,90,5.78,110,5.86,120,5.71,135,5.15,144.7,4.643825,150,4.37
8,40.9,5.516942,52,6.22,60,6.5,75,6.69,90,6.88,110,6.98,120,6.86,135,6.34,148.1,5.571446,150,5.47
10,40.2,6.205845,52,6.87,60,7.05,75,7.18,90,7.35,110,7.5,120,7.42,135,7.13,148.6,6.525681,150,6.43
12,38.5,6.478338,52,7.14,60,7.31,75,7.47,90,7.53,110,7.89,120,7.86,135,7.57,150,7.06,150.4,7.038569
14,37.9,6.577246,52,7.26,60,7.45,75,7.68,90,7.77,110,8.21,120,8.33,135,8,150,7.41,173.9,6.496785
16,37.9,6.653283,52,7.31,60,7.51,75,7.85,90,8.05,110,8.44,120,8.76,135,8.5,150,7.7,176.7,7.021643
20,37.4,6.759694,52,7.39,60,7.56,75,8,90,8.47,110,8.86,120,9.33,135,9.62,150,8.46,177.8,7.70568

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.22	5.49	5.71	5.78	5.86	5.71	5.15	4.37
8	6.22	6.5	6.69	6.88	6.98	6.86	6.34	5.47
10	6.87	7.05	7.18	7.35	7.5	7.42	7.13	6.43
12	7.14	7.31	7.47	7.53	7.89	7.86	7.57	7.06
14	7.26	7.45	7.68	7.77	8.21	8.33	8	7.41
16	7.31	7.51	7.85	8.05	8.44	8.76	8.5	7.7
20	7.39	7.56	8	8.47	8.86	9.33	9.62	8.46

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	3.45	144.7°	3.79
8	40.9°	4.17	148.1°	4.73
10	40.2°	4.74	148.6°	5.57
12	38.5°	5.07	150.4°	6.12
14	37.9°	5.19	173.9°	6.46
16	37.9°	5.25	176.7°	7.01
20	37.4°	5.37	177.8°	7.7

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