INTRUSION — ORC Rating

GPH

707.5

OSN

683.3

LOA

8.03 m

Displacement

1670 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.568

Medium

0.7828

High

0.9028

Triple Offshore

Low

0.733

Medium

0.9601

High

1.0899

Boat Specifications

Dimensions

Length overall: 8.03 m
Beam: 2.77 m
Draft: 1.42 m
Displacement: 1670 kg
Crew weight: 418 kg
Wetted surface: 15.44 m²

Sails

Mainsail: 20.32 m²
Genoa: 18.05 m²
Spinnaker: 46.63 m²
Asymmetric spinnaker: 0 m²

Design

Type: S80
Builder: Swarbrick
Designer: Swarbrick
Year built: 1983
Stability index: 92.9

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.

6,43.2,4.115403,52,4.59,60,4.85,75,5,90,4.97,110,5.02,120,4.87,135,4.35,146,3.787524,150,3.63
8,41.5,4.873452,52,5.44,60,5.66,75,5.79,90,5.9,110,5.98,120,5.85,135,5.32,150,4.65,151.1,4.60327
10,40.2,5.381018,52,5.95,60,6.12,75,6.26,90,6.44,110,6.54,120,6.44,135,6.12,150,5.52,152.8,5.385554
12,38.7,5.676355,52,6.27,60,6.43,75,6.58,90,6.78,110,7.02,120,6.93,135,6.59,150,6.19,161.9,5.807374
14,38.8,5.825457,52,6.43,60,6.63,75,6.88,90,6.96,110,7.47,120,7.41,135,7.06,150,6.63,175.4,6.10968
16,38.8,5.889614,52,6.5,60,6.73,75,7.1,90,7.25,110,7.83,120,7.93,135,7.55,150,7.06,177.2,6.517781
20,40,5.939603,52,6.53,60,6.81,75,7.3,90,7.75,110,8.33,120,9.04,135,8.92,150,8.02,176.6,7.312872

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.59	4.85	5	4.97	5.02	4.87	4.35	3.63
8	5.44	5.66	5.79	5.9	5.98	5.85	5.32	4.65
10	5.95	6.12	6.26	6.44	6.54	6.44	6.12	5.52
12	6.27	6.43	6.58	6.78	7.02	6.93	6.59	6.19
14	6.43	6.63	6.88	6.96	7.47	7.41	7.06	6.63
16	6.5	6.73	7.1	7.25	7.83	7.93	7.55	7.06
20	6.53	6.81	7.3	7.75	8.33	9.04	8.92	8.02

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3	146°	3.14
8	41.5°	3.65	151.1°	4.03
10	40.2°	4.11	152.8°	4.79
12	38.7°	4.43	161.9°	5.52
14	38.8°	4.54	175.4°	6.09
16	38.8°	4.59	177.2°	6.51
20	40°	4.55	176.6°	7.3

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