HAPPINESS II — ORC Rating

GPH

798.1

OSN

779.3

LOA

7.9 m

Displacement

2257 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5094

Medium

0.6804

High

0.758

Triple Offshore

Low

0.6616

Medium

0.8482

High

0.928

Boat Specifications

Dimensions

Length overall: 7.9 m
Beam: 2.49 m
Draft: 1.05 m
Displacement: 2257 kg
Crew weight: 336 kg
Wetted surface: 12.98 m²

Sails

Mainsail: 15.01 m²
Genoa: 21.18 m²
Spinnaker: 51.68 m²
Asymmetric spinnaker: 0 m²

Design

Type: Tirena 27
Builder: Tirena Yachts
Year built: 1969

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.

6,46.3,3.647509,52,3.96,60,4.29,75,4.53,90,4.53,110,4.69,120,4.53,135,4.14,149,3.639896,150,3.6
8,45,4.228499,52,4.68,60,5.05,75,5.33,90,5.39,110,5.61,120,5.56,135,5.14,150,4.5,152,4.417023
10,46.5,4.837623,52,5.23,60,5.52,75,5.72,90,5.85,110,6.03,120,6.01,135,5.83,150,5.35,152,5.266451
12,46.5,5.157226,52,5.51,60,5.75,75,5.94,90,6.03,110,6.33,120,6.33,135,6.17,150,5.89,170,5.381761
14,45.8,5.206801,52,5.61,60,5.85,75,6.09,90,6.22,110,6.59,120,6.66,135,6.49,150,6.19,180,5.79
16,45.9,5.216171,52,5.63,60,5.88,75,6.19,90,6.4,110,6.75,120,6.95,135,6.83,150,6.48,180,6.1
20,47.2,5.166009,52,5.55,60,5.86,75,6.25,90,6.66,110,6.98,120,7.29,135,7.43,150,7.09,180,6.67

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	3.96	4.29	4.53	4.53	4.69	4.53	4.14	3.6
8	4.68	5.05	5.33	5.39	5.61	5.56	5.14	4.5
10	5.23	5.52	5.72	5.85	6.03	6.01	5.83	5.35
12	5.51	5.75	5.94	6.03	6.33	6.33	6.17	5.89
14	5.61	5.85	6.09	6.22	6.59	6.66	6.49	6.19
16	5.63	5.88	6.19	6.4	6.75	6.95	6.83	6.48
20	5.55	5.86	6.25	6.66	6.98	7.29	7.43	7.09

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	46.3°	2.52	149°	3.12
8	45°	2.99	152°	3.9
10	46.5°	3.33	152°	4.65
12	46.5°	3.55	170°	5.3
14	45.8°	3.63	180°	5.79
16	45.9°	3.63	180°	6.1
20	47.2°	3.51	180°	6.67

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