GRUMETE — ORC Rating | RegattaPages

GPH

729.8

OSN

707.9

LOA

7.606 m

Displacement

1435 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6366

Medium

0.8582

High

0.9699

Triple Offshore

Low

0.8145

Medium

1.0403

High

1.1608

Boat Specifications

Dimensions

Length overall: 7.606 m
Beam: 2.9 m
Draft: 1.49 m
Displacement: 1435 kg
Crew weight: 250 kg
Wetted surface: 12.6 m²

Sails

Mainsail: 17.41 m²
Genoa: 15.8 m²
Spinnaker: 33.6 m²
Asymmetric spinnaker: 0 m²

Design

Type: MANZANITA
Builder: FIBRAMAR
Designer: R. HOLLAND
Year built: 1977

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.

6,41.5,4.058985,52,4.55,60,4.77,75,4.94,90,4.89,110,4.9,120,4.73,135,4.25,148.6,3.667034,150,3.61
8,40.8,4.782066,52,5.35,60,5.53,75,5.65,90,5.74,110,5.75,120,5.63,135,5.17,150,4.55,152.5,4.441885
10,39.4,5.254075,52,5.76,60,5.89,75,6,90,6.17,110,6.19,120,6.1,135,5.83,150,5.34,154.9,5.15698
12,37.8,5.454626,52,5.99,60,6.13,75,6.27,90,6.5,110,6.57,120,6.47,135,6.21,150,5.89,174.3,5.376584
14,37.7,5.561007,52,6.12,60,6.3,75,6.51,90,6.76,110,6.97,120,6.85,135,6.57,150,6.24,180,5.85
16,37.8,5.593839,52,6.18,60,6.4,75,6.71,90,6.89,110,7.33,120,7.26,135,6.95,150,6.58,180,6.19
20,39.6,5.606653,52,6.18,60,6.45,75,6.9,90,7.26,110,7.86,120,8.14,135,7.83,150,7.32,180,6.85

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.55	4.77	4.94	4.89	4.9	4.73	4.25	3.61
8	5.35	5.53	5.65	5.74	5.75	5.63	5.17	4.55
10	5.76	5.89	6	6.17	6.19	6.1	5.83	5.34
12	5.99	6.13	6.27	6.5	6.57	6.47	6.21	5.89
14	6.12	6.3	6.51	6.76	6.97	6.85	6.57	6.24
16	6.18	6.4	6.71	6.89	7.33	7.26	6.95	6.58
20	6.18	6.45	6.9	7.26	7.86	8.14	7.83	7.32

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.5°	3.04	148.6°	3.13
8	40.8°	3.62	152.5°	3.94
10	39.4°	4.06	154.9°	4.67
12	37.8°	4.31	174.3°	5.35
14	37.7°	4.4	180°	5.85
16	37.8°	4.42	180°	6.19
20	39.6°	4.32	180°	6.85

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