XTREM JP — ORC Rating

GPH

657

OSN

636.4

LOA

8 m

Displacement

1500 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6281

Medium

0.8396

High

0.9688

Triple Offshore

Low

0.8036

Medium

1.0241

High

1.1726

Boat Specifications

Dimensions

Length overall: 8 m
Beam: 2.41 m
Draft: 1.63 m
Displacement: 1500 kg
Crew weight: 445 kg
Wetted surface: 14.61 m²

Sails

Mainsail: 21.93 m²
Genoa: 15.81 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 67.62 m²

Design

Type: CORK 1720
Builder: 1720 YACHT UK
Designer: TONY CASTRO
Year built: 1994
Stability index: 99.8

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.

6,43,4.293408,52,4.78,60,5.05,75,5.25,90,5.54,110,5.66,120,5.54,135,5.05,142.9,4.7017,150,4.33
8,41.4,5.092579,52,5.68,60,5.92,75,6.07,90,6.36,110,6.49,120,6.42,135,6.12,147.8,5.495199,150,5.37
10,40,5.665468,52,6.2,60,6.34,75,6.46,90,6.67,110,7.07,120,7.04,135,6.7,150,6.17,155,5.958241
12,38.1,5.909001,52,6.47,60,6.63,75,6.81,90,6.9,110,7.54,120,7.73,135,7.33,150,6.71,164,6.220991
14,37.2,5.963367,52,6.58,60,6.81,75,7.18,90,7.27,110,7.9,120,8.33,135,8.1,150,7.28,174.5,6.489878
16,37,5.99773,52,6.63,60,6.9,75,7.41,90,7.73,110,8.25,120,8.79,135,9.01,150,7.93,165.8,7.158733
20,37.5,6.075477,52,6.72,60,7.02,75,7.59,90,8.33,110,8.92,120,9.73,135,11.47,139.8,11.521401,150,10.16

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.78	5.05	5.25	5.54	5.66	5.54	5.05	4.33
8	5.68	5.92	6.07	6.36	6.49	6.42	6.12	5.37
10	6.2	6.34	6.46	6.67	7.07	7.04	6.7	6.17
12	6.47	6.63	6.81	6.9	7.54	7.73	7.33	6.71
14	6.58	6.81	7.18	7.27	7.9	8.33	8.1	7.28
16	6.63	6.9	7.41	7.73	8.25	8.79	9.01	7.93
20	6.72	7.02	7.59	8.33	8.92	9.73	11.47	10.16

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.14	142.9°	3.75
8	41.4°	3.82	147.8°	4.65
10	40°	4.34	155°	5.4
12	38.1°	4.65	164°	5.98
14	37.2°	4.75	174.5°	6.46
16	37°	4.79	165.8°	6.94
20	37.5°	4.82	139.8°	8.8

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