KING BILLY — ORC Rating

GPH

631.5

OSN

611.1

LOA

11.5 m

Displacement

7463 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6493

Medium

0.8824

High

1.0147

Triple Offshore

Low

0.8307

Medium

1.0727

High

1.1953

Boat Specifications

Dimensions

Length overall: 11.5 m
Beam: 3.83 m
Draft: 2.06 m
Displacement: 7463 kg
Crew weight: 670 kg
Wetted surface: 30.21 m²

Sails

Mainsail: 36.89 m²
Genoa: 49.66 m²
Spinnaker: 105.34 m²
Asymmetric spinnaker: 0 m²

Design

Type: KING 38 CUSTOM
Builder: SAILORS BAY B'SHED
Designer: KING
Year built: 1992
Stability index: 118.7

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.

4,42.7,3.510612,52,4,60,4.24,75,4.38,90,4.23,110,3.97,120,3.83,135,3.4,146.2,2.936276,150,2.82
6,42.7,4.789672,52,5.34,60,5.6,75,5.75,90,5.62,110,5.45,120,5.28,135,4.76,146.2,4.23594,150,4.06
8,41.2,5.635189,52,6.25,60,6.48,75,6.61,90,6.54,110,6.55,120,6.39,135,5.89,150,5.18,150.5,5.15881
10,39.7,6.173645,52,6.8,60,6.96,75,7.07,90,7.06,110,7.17,120,7.09,135,6.75,150,6.12,153.2,5.960211
12,38.5,6.46556,52,7.09,60,7.23,75,7.35,90,7.37,110,7.54,120,7.5,135,7.28,150,6.85,158.3,6.500687
14,37.7,6.5721,52,7.24,60,7.39,75,7.56,90,7.61,110,7.84,120,7.84,135,7.65,150,7.31,165.5,6.848129
16,37.4,6.646403,52,7.31,60,7.49,75,7.72,90,7.82,110,8.09,120,8.14,135,7.99,150,7.66,171.8,7.153132
20,37.4,6.696755,52,7.37,60,7.56,75,7.9,90,8.14,110,8.41,120,8.71,135,8.66,150,8.31,178.1,7.754263
24,38,6.713106,52,7.38,60,7.6,75,7.99,90,8.37,110,8.65,120,9.09,135,9.44,150,9,177.7,8.346724

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
4	4	4.24	4.38	4.23	3.97	3.83	3.4	2.82
6	5.34	5.6	5.75	5.62	5.45	5.28	4.76	4.06
8	6.25	6.48	6.61	6.54	6.55	6.39	5.89	5.18
10	6.8	6.96	7.07	7.06	7.17	7.09	6.75	6.12
12	7.09	7.23	7.35	7.37	7.54	7.5	7.28	6.85
14	7.24	7.39	7.56	7.61	7.84	7.84	7.65	7.31
16	7.31	7.49	7.72	7.82	8.09	8.14	7.99	7.66
20	7.37	7.56	7.9	8.14	8.41	8.71	8.66	8.31
24	7.38	7.6	7.99	8.37	8.65	9.09	9.44	9

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
4	42.7°	2.58	146.2°	2.44
6	42.7°	3.52	146.2°	3.52
8	41.2°	4.24	150.5°	4.49
10	39.7°	4.75	153.2°	5.32
12	38.5°	5.06	158.3°	6.04
14	37.7°	5.2	165.5°	6.63
16	37.4°	5.28	171.8°	7.08
20	37.4°	5.32	178.1°	7.75
24	38°	5.29	177.7°	8.34

Loading polar chart…