Jonna — ORC Rating | RegattaPages

GPH

605.6

OSN

590

LOA

11.86 m

Displacement

8113 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6725

Medium

0.9058

High

1.044

Triple Offshore

Low

0.8695

Medium

1.1162

High

1.2431

Boat Specifications

Dimensions

Length overall: 11.86 m
Beam: 3.84 m
Draft: 2.05 m
Displacement: 8113 kg
Crew weight: 759 kg
Wetted surface: 31.81 m²

Sails

Mainsail: 48.71 m²
Genoa: 49.66 m²
Spinnaker: 100.28 m²
Asymmetric spinnaker: 0 m²

Design

Type: Elan 40
Builder: Elan Marine
Designer: HUMPHREYS ROB
Year built: 2002

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.

6,42.8,4.947325,52,5.54,60,5.86,75,6.14,90,6.1,110,5.74,120,5.58,135,5.05,145,4.504658,150,4.27
8,41.2,5.781385,52,6.54,60,6.84,75,7.07,90,7.06,110,6.93,120,6.77,135,6.18,150,5.35781
10,41.2,6.485783,52,7.16,60,7.36,75,7.51,90,7.54,110,7.57,120,7.49,135,7.1,150,6.31,151,6.254147
12,40.1,6.745791,52,7.41,60,7.6,75,7.77,90,7.82,110,7.94,120,7.89,135,7.62,150,7.12,156,6.819584
14,39,6.819826,52,7.52,60,7.71,75,7.95,90,8.06,110,8.28,120,8.24,135,7.98,150,7.6,172,6.947614
16,38.6,6.871221,52,7.57,60,7.77,75,8.08,90,8.29,110,8.55,120,8.63,135,8.35,150,7.94,180,7.43
20,38.2,6.89693,52,7.6,60,7.82,75,8.2,90,8.64,110,8.92,120,9.27,135,9.17,150,8.66,180,8.11

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.54	5.86	6.14	6.1	5.74	5.58	5.05	4.27
8	6.54	6.84	7.07	7.06	6.93	6.77	6.18	5.36
10	7.16	7.36	7.51	7.54	7.57	7.49	7.1	6.31
12	7.41	7.6	7.77	7.82	7.94	7.89	7.62	7.12
14	7.52	7.71	7.95	8.06	8.28	8.24	7.98	7.6
16	7.57	7.77	8.08	8.29	8.55	8.63	8.35	7.94
20	7.6	7.82	8.2	8.64	8.92	9.27	9.17	8.66

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.63	145°	3.69
8	41.2°	4.35	150°	4.64
10	41.2°	4.88	151°	5.47
12	40.1°	5.16	156°	6.23
14	39°	5.3	172°	6.88
16	38.6°	5.37	180°	7.43
20	38.2°	5.42	180°	8.11

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