BELLA — ORC Rating | RegattaPages

GPH

801.1

OSN

779.1

LOA

7.05 m

Displacement

1835 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5117

Medium

0.6899

High

0.7908

Triple Offshore

Low

0.6572

Medium

0.8436

High

0.9415

Boat Specifications

Dimensions

Length overall: 7.05 m
Beam: 2.5 m
Draft: 1.31 m
Displacement: 1835 kg
Crew weight: 400 kg
Wetted surface: 12.17 m²

Sails

Mainsail: 11.88 m²
Genoa: 15.09 m²
Spinnaker: 37.77 m²
Asymmetric spinnaker: 40.02 m²

Design

Type: BELLONA 23
Builder: Rootsi
Year built: 1976

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.

6,42.8,3.557167,52,3.97,60,4.18,75,4.33,90,4.49,110,4.57,120,4.41,135,4.03,146.8,3.621091,150,3.5
8,41.6,4.132131,52,4.7,60,4.94,75,5.1,90,5.36,110,5.41,120,5.31,135,4.93,150,4.32,153,4.1975
10,42.8,4.74289,52,5.21,60,5.38,75,5.5,90,5.73,110,5.79,120,5.72,135,5.53,150,5.07,154,4.928827
12,40.5,4.971029,52,5.45,60,5.58,75,5.71,90,5.98,110,6.1,120,6.03,135,5.84,150,5.56,174,5.077817
14,39.8,5.128315,52,5.59,60,5.73,75,5.89,90,6.15,110,6.41,120,6.36,135,6.14,150,5.84,180,5.51
16,39.8,5.193395,52,5.67,60,5.84,75,6.05,90,6.24,110,6.66,120,6.66,135,6.44,150,6.12,180,5.79
20,40.5,5.220895,52,5.71,60,5.92,75,6.29,90,6.49,110,6.94,120,7.12,135,6.98,150,6.68,180,6.32

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	3.97	4.18	4.33	4.49	4.57	4.41	4.03	3.5
8	4.7	4.94	5.1	5.36	5.41	5.31	4.93	4.32
10	5.21	5.38	5.5	5.73	5.79	5.72	5.53	5.07
12	5.45	5.58	5.71	5.98	6.1	6.03	5.84	5.56
14	5.59	5.73	5.89	6.15	6.41	6.36	6.14	5.84
16	5.67	5.84	6.05	6.24	6.66	6.66	6.44	6.12
20	5.71	5.92	6.29	6.49	6.94	7.12	6.98	6.68

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	2.61	146.8°	3.03
8	41.6°	3.09	153°	3.74
10	42.8°	3.48	154°	4.43
12	40.5°	3.78	174°	5.05
14	39.8°	3.94	180°	5.51
16	39.8°	3.99	180°	5.79
20	40.5°	3.97	180°	6.32

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