RATTLE AND RUM — ORC Rating

GPH

603.1

OSN

586.4

LOA

7.9 m

Displacement

1142 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6903

Medium

0.894

High

1.0504

Triple Offshore

Low

0.883

Medium

1.1103

High

1.2811

Boat Specifications

Dimensions

Length overall: 7.9 m
Beam: 2.55 m
Draft: 1.9 m
Displacement: 1142 kg
Crew weight: 425 kg
Wetted surface: 14.62 m²

Sails

Mainsail: 27.63 m²
Genoa: 14.85 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 80.63 m²

Design

Type: GP 26
Builder: Mag Marin Istanbul
Designer: DONOVAN
Year built: 2011
Stability index: 109.2

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.

6,43.2,4.869894,52,5.43,60,5.76,75,6.01,90,6.02,110,6.15,120,6.04,135,5.38,143.3,4.901621,150,4.54
8,41.2,5.794675,52,6.36,60,6.54,75,6.68,90,6.67,110,7.03,120,6.99,135,6.57,146.9,5.956653,150,5.76
10,38.8,5.992265,52,6.64,60,6.89,75,7.27,90,7.28,110,7.6,120,7.9,135,7.48,150,6.6,151.6,6.502597
12,38.7,6.099199,52,6.75,60,7.06,75,7.64,90,8.05,110,8.1,120,8.52,135,8.64,148.2,7.60096,150,7.46
14,38.4,6.150364,52,6.81,60,7.15,75,7.84,90,8.56,110,8.58,120,9.13,135,9.88,145.6,8.944224,150,8.52
16,38.4,6.214164,52,6.93,60,7.32,75,7.96,90,8.83,110,9.23,120,9.72,135,10.78,141.1,10.806391,150,9.71
20,39.3,6.280366,52,7.01,60,7.46,75,8.36,90,9.18,110,10.75,120,10.85,135,12.52,146.7,13.687364,150,13.22

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.43	5.76	6.01	6.02	6.15	6.04	5.38	4.54
8	6.36	6.54	6.68	6.67	7.03	6.99	6.57	5.76
10	6.64	6.89	7.27	7.28	7.6	7.9	7.48	6.6
12	6.75	7.06	7.64	8.05	8.1	8.52	8.64	7.46
14	6.81	7.15	7.84	8.56	8.58	9.13	9.88	8.52
16	6.93	7.32	7.96	8.83	9.23	9.72	10.78	9.71
20	7.01	7.46	8.36	9.18	10.75	10.85	12.52	13.22

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.55	143.3°	3.93
8	41.2°	4.36	146.9°	4.99
10	38.8°	4.67	151.6°	5.72
12	38.7°	4.76	148.2°	6.46
14	38.4°	4.82	145.6°	7.38
16	38.4°	4.87	141.1°	8.41
20	39.3°	4.86	146.7°	11.44

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