JAM JAM — ORC Rating | RegattaPages

GPH

720.3

OSN

697.9

LOA

8.742 m

Displacement

3218 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5728

Medium

0.7711

High

0.884

Triple Offshore

Low

0.7317

Medium

0.9383

High

1.0454

Boat Specifications

Dimensions

Length overall: 8.742 m
Beam: 3.05 m
Draft: 1.41 m
Displacement: 3218 kg
Crew weight: 500 kg
Wetted surface: 18.35 m²

Sails

Mainsail: 17.52 m²
Genoa: 32.41 m²
Spinnaker: 57.79 m²
Asymmetric spinnaker: 51.7 m²

Design

Type: Morgan 27
Designer: MORGAN
Year built: 1972
Stability index: 95.3

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.

6,43.2,4.197712,52,4.66,60,4.91,75,5.04,90,4.94,110,4.83,120,4.68,135,4.28,147.5,3.770491,150,3.67
8,42,4.898103,52,5.44,60,5.66,75,5.78,90,5.73,110,5.76,120,5.65,135,5.23,150,4.64,151.4,4.590066
10,41.1,5.401005,52,5.91,60,6.06,75,6.17,90,6.23,110,6.3,120,6.23,135,5.96,150,5.45,154.3,5.271469
12,39.6,5.658566,52,6.17,60,6.29,75,6.42,90,6.53,110,6.66,120,6.61,135,6.39,150,6.04,163.1,5.633281
14,39,5.751815,52,6.28,60,6.43,75,6.62,90,6.72,110,6.97,120,6.94,135,6.73,150,6.42,175.4,5.939131
16,38.7,5.804489,52,6.34,60,6.5,75,6.76,90,6.89,110,7.22,120,7.26,135,7.07,150,6.74,178.1,6.303466
20,38.7,5.84293,52,6.39,60,6.57,75,6.9,90,7.17,110,7.62,120,7.81,135,7.71,150,7.35,179,6.89105

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.66	4.91	5.04	4.94	4.83	4.68	4.28	3.67
8	5.44	5.66	5.78	5.73	5.76	5.65	5.23	4.64
10	5.91	6.06	6.17	6.23	6.3	6.23	5.96	5.45
12	6.17	6.29	6.42	6.53	6.66	6.61	6.39	6.04
14	6.28	6.43	6.62	6.72	6.97	6.94	6.73	6.42
16	6.34	6.5	6.76	6.89	7.22	7.26	7.07	6.74
20	6.39	6.57	6.9	7.17	7.62	7.81	7.71	7.35

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.06	147.5°	3.18
8	42°	3.64	151.4°	4.03
10	41.1°	4.07	154.3°	4.75
12	39.6°	4.36	163.1°	5.39
14	39°	4.47	175.4°	5.92
16	38.7°	4.53	178.1°	6.3
20	38.7°	4.56	179°	6.89

Loading polar chart…