Second Mouse — ORC Rating

GPH

661.3

OSN

641.9

LOA

8.824 m

Displacement

1643 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6932

Medium

0.9404

High

1.0742

Triple Offshore

Low

0.8943

Medium

1.148

High

1.3042

Boat Specifications

Dimensions

Length overall: 8.824 m
Beam: 2.6 m
Draft: 1.5 m
Displacement: 1643 kg
Crew weight: 499 kg
Wetted surface: 14.89 m²

Sails

Mainsail: 23.31 m²
Genoa: 21.91 m²
Spinnaker: 41.05 m²
Asymmetric spinnaker: 0 m²

Design

Type: J-27
Builder: TPI
Designer: Johnstone
Year built: 1985

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.

6,42.5,4.570872,52,5.12,60,5.39,75,5.61,90,5.55,110,5.29,120,5.11,135,4.6,146.2,3.995261,150,3.83
8,41.5,5.434233,52,6.01,60,6.19,75,6.31,90,6.29,110,6.27,120,6.14,135,5.65,150,4.87,150.3,4.846704
10,38.9,5.872201,52,6.42,60,6.56,75,6.69,90,6.73,110,6.78,120,6.66,135,6.35,150,5.77,152.2,5.663699
12,37.2,6.013585,52,6.61,60,6.82,75,7.08,90,7.14,110,7.35,120,7.2,135,6.8,150,6.4,162.6,5.983818
14,36.5,6.058293,52,6.71,60,6.96,75,7.38,90,7.56,110,7.94,120,7.79,135,7.32,150,6.82,180,6.29
16,36.3,6.104762,52,6.77,60,7.05,75,7.54,90,7.95,110,8.46,120,8.49,135,7.89,150,7.29,180,6.7
20,36.7,6.123908,52,6.78,60,7.11,75,7.69,90,8.39,110,9.21,120,10.01,135,9.43,150,8.42,180,7.6

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.12	5.39	5.61	5.55	5.29	5.11	4.6	3.83
8	6.01	6.19	6.31	6.29	6.27	6.14	5.65	4.87
10	6.42	6.56	6.69	6.73	6.78	6.66	6.35	5.77
12	6.61	6.82	7.08	7.14	7.35	7.2	6.8	6.4
14	6.71	6.96	7.38	7.56	7.94	7.79	7.32	6.82
16	6.77	7.05	7.54	7.95	8.46	8.49	7.89	7.29
20	6.78	7.11	7.69	8.39	9.21	10.01	9.43	8.42

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.5°	3.37	146.2°	3.32
8	41.5°	4.07	150.3°	4.21
10	38.9°	4.57	152.2°	5.01
12	37.2°	4.79	162.6°	5.71
14	36.5°	4.87	180°	6.29
16	36.3°	4.92	180°	6.7
20	36.7°	4.91	180°	7.6

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