CHENAPAN 4 — ORC Rating

GPH

503.5

OSN

489.7

LOA

12.139 m

Displacement

4303 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8058

Medium

1.0724

High

1.2618

Triple Offshore

Low

1.0432

Medium

1.3365

High

1.5527

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: 29.65 m²

Sails

Mainsail: 55 m²
Genoa: 41.14 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 189.8 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.

6,43,5.838488,52,6.52,60,6.91,75,7.27,90,7.45,110,7.18,120,6.92,135,6.12,142.4,5.59139,150,5.12
8,41.2,6.964243,52,7.73,60,7.95,75,8.19,90,8.36,110,8.27,120,8.19,135,7.78,143.8,7.013976,150,6.53
10,38.8,7.390888,52,8.18,60,8.44,75,8.72,90,9.13,110,9.07,120,9.16,135,8.63,148.2,7.836283,150,7.69
12,37.5,7.537625,52,8.39,60,8.74,75,9.3,90,9.65,110,9.99,120,10,135,9.64,150,8.56,151.5,8.443167
14,36.6,7.59824,52,8.52,60,8.94,75,9.63,90,10.08,110,10.94,120,10.67,135,10.87,148.2,9.57768,150,9.4
16,35.8,7.705929,52,8.65,60,9.06,75,9.84,90,10.59,110,11.68,120,11.87,135,12.22,145.1,11.083313,150,10.5
20,36,7.81195,52,8.92,60,9.42,75,10.17,90,11.18,110,12.85,120,13.81,135,14.18,144,14.486717,150,13.53

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.52	6.91	7.27	7.45	7.18	6.92	6.12	5.12
8	7.73	7.95	8.19	8.36	8.27	8.19	7.78	6.53
10	8.18	8.44	8.72	9.13	9.07	9.16	8.63	7.69
12	8.39	8.74	9.3	9.65	9.99	10	9.64	8.56
14	8.52	8.94	9.63	10.08	10.94	10.67	10.87	9.4
16	8.65	9.06	9.84	10.59	11.68	11.87	12.22	10.5
20	8.92	9.42	10.17	11.18	12.85	13.81	14.18	13.53

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	4.27	142.4°	4.43
8	41.2°	5.24	143.8°	5.66
10	38.8°	5.76	148.2°	6.66
12	37.5°	5.98	151.5°	7.42
14	36.6°	6.1	148.2°	8.14
16	35.8°	6.25	145.1°	9.09
20	36°	6.32	144°	11.72

Loading polar chart…