CHENAPAN 4 — ORC Rating

GPH

504.3

OSN

490.4

LOA

12.139 m

Displacement

4303 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8038

Medium

1.0708

High

1.2592

Triple Offshore

Low

1.0411

Medium

1.3349

High

1.5503

Boat Specifications

Dimensions

Length overall: 12.139 m
Beam: 4.2 m
Draft: 2.99 m
Displacement: 4303 kg
Crew weight: 830 kg
Wetted surface: 29.64 m²

Sails

Mainsail: 54.66 m²
Genoa: 40.88 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 187.64 m²

Design

Type: KER40
Builder: Mc Conaghy Yachts
Designer: KER Jason
Year built: 2011
Stability index: 135.6

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.

6,43,5.824815,52,6.5,60,6.9,75,7.26,90,7.44,110,7.17,120,6.9,135,6.1,142.4,5.578768,150,5.1
8,41.2,6.964243,52,7.72,60,7.95,75,8.18,90,8.35,110,8.26,120,8.18,135,7.76,140.3,7.330392,150,6.51
10,38.8,7.378057,52,8.17,60,8.43,75,8.71,90,9.13,110,9.07,120,9.14,135,8.61,148.2,7.824517,150,7.67
12,37.5,7.537625,52,8.38,60,8.74,75,9.29,90,9.66,110,9.99,120,10,135,9.61,150,8.54,151.4,8.439799
14,36.6,7.59824,52,8.52,60,8.93,75,9.62,90,10.07,110,10.93,120,10.66,135,10.84,148.5,9.523361,150,9.38
16,35.8,7.693599,52,8.64,60,9.05,75,9.84,90,10.58,110,11.67,120,11.86,135,12.2,145.1,11.046734,150,10.47
20,36,7.799589,52,8.91,60,9.41,75,10.15,90,11.17,110,12.84,120,13.8,135,14.17,143.8,14.461678,150,13.47

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.5	6.9	7.26	7.44	7.17	6.9	6.1	5.1
8	7.72	7.95	8.18	8.35	8.26	8.18	7.76	6.51
10	8.17	8.43	8.71	9.13	9.07	9.14	8.61	7.67
12	8.38	8.74	9.29	9.66	9.99	10	9.61	8.54
14	8.52	8.93	9.62	10.07	10.93	10.66	10.84	9.38
16	8.64	9.05	9.84	10.58	11.67	11.86	12.2	10.47
20	8.91	9.41	10.15	11.17	12.84	13.8	14.17	13.47

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	4.26	142.4°	4.42
8	41.2°	5.24	140.3°	5.64
10	38.8°	5.75	148.2°	6.65
12	37.5°	5.98	151.4°	7.41
14	36.6°	6.1	148.5°	8.12
16	35.8°	6.24	145.1°	9.06
20	36°	6.31	143.8°	11.67

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