YAMAHOELA — ORC Rating

GPH

774.1

OSN

749.4

LOA

7.46 m

Displacement

1336 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5169

Medium

0.7111

High

0.8346

Triple Offshore

Low

0.6665

Medium

0.8774

High

1.0073

Boat Specifications

Dimensions

Length overall: 7.46 m
Beam: 3.08 m
Draft: 1.54 m
Displacement: 1336 kg
Crew weight: 340 kg
Wetted surface: 12.66 m²

Sails

Mainsail: 13.81 m²
Genoa: 13.41 m²
Spinnaker: 30.85 m²
Asymmetric spinnaker: 0 m²

Design

Type: YAMAHA 1/4 TON
Builder: YAMAHA
Designer: YAMAHA DESIGN GROU
Year built: 1979

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.

6,43.5,3.653286,52,4.07,60,4.31,75,4.5,90,4.56,110,4.6,120,4.45,135,3.99,149.5,3.47017,150,3.45
8,43.1,4.355196,52,4.84,60,5.11,75,5.3,90,5.49,110,5.52,120,5.39,135,4.93,150,4.36,153,4.253616
10,42.9,4.887086,52,5.4,60,5.61,75,5.76,90,5.99,110,6.02,120,5.93,135,5.66,150,5.15,155,4.965201
12,41.6,5.228684,52,5.72,60,5.89,75,6.05,90,6.38,110,6.44,120,6.32,135,6.07,150,5.75,172,5.230907
14,39.8,5.427684,52,5.94,60,6.12,75,6.31,90,6.68,110,6.84,120,6.72,135,6.45,150,6.11,180,5.7
16,39.4,5.512896,52,6.08,60,6.31,75,6.57,90,6.83,110,7.22,120,7.11,135,6.82,150,6.47,180,6.05
20,41.1,5.533708,52,6.08,60,6.38,75,6.86,90,7.14,110,7.88,120,8.07,135,7.66,150,7.16,180,6.72

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.07	4.31	4.5	4.56	4.6	4.45	3.99	3.45
8	4.84	5.11	5.3	5.49	5.52	5.39	4.93	4.36
10	5.4	5.61	5.76	5.99	6.02	5.93	5.66	5.15
12	5.72	5.89	6.05	6.38	6.44	6.32	6.07	5.75
14	5.94	6.12	6.31	6.68	6.84	6.72	6.45	6.11
16	6.08	6.31	6.57	6.83	7.22	7.11	6.82	6.47
20	6.08	6.38	6.86	7.14	7.88	8.07	7.66	7.16

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	2.65	149.5°	2.99
8	43.1°	3.18	153°	3.79
10	42.9°	3.58	155°	4.5
12	41.6°	3.91	172°	5.18
14	39.8°	4.17	180°	5.7
16	39.4°	4.26	180°	6.05
20	41.1°	4.17	180°	6.72

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