Kelsea Blue: ORC Rating

GPH

581.2

OSN

566.4

LOA

11.5 m

Displacement

5585 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7133

Medium

0.946

High

1.0686

Triple Offshore

Low

0.9196

Medium

1.1571

High

1.28

Boat Specifications

Dimensions

Length overall: 11.5 m
Beam: 3.65 m
Draft: 2 m
Displacement: 5585 kg
Crew weight: 675 kg
Wetted surface: 28.56 m²

Sails

Mainsail: 45.97 m²
Genoa: 38.09 m²
Spinnaker: 114.33 m²
Asymmetric spinnaker: 94.59 m²

Design

Type: Sloop
Builder: C&C Yachts
Designer: Tim Jackett
Year built: 2006
Stability index: 117.3

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,43,5.236864,52,5.83,60,6.13,75,6.33,90,6.51,110,6.29,120,5.96,135,5.38,141.5,5.008892,150,4.53
8,40.8,6.116288,52,6.81,60,7.02,75,7.19,90,7.38,110,7.28,120,7.12,135,6.63,147.8,5.826093,150,5.7
10,38.8,6.556847,52,7.28,60,7.46,75,7.6,90,7.82,110,7.81,120,7.75,135,7.42,150,6.71,151.4,6.62883
12,37.8,6.7202,52,7.46,60,7.66,75,7.88,90,8.08,110,8.25,120,8.24,135,7.94,150,7.43,157.4,7.094809
14,37.6,6.815689,52,7.55,60,7.76,75,8.07,90,8.26,110,8.65,120,8.71,135,8.44,150,7.92,168.2,7.294144
16,37.5,6.869575,52,7.61,60,7.83,75,8.19,90,8.48,110,9.01,120,9.16,135,8.96,150,8.4,177.2,7.659144
20,38.2,6.92238,52,7.65,60,7.89,75,8.32,90,8.79,110,9.58,120,9.99,135,10.29,150,9.47,177.2,8.550208

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.83	6.13	6.33	6.51	6.29	5.96	5.38	4.53
8	6.81	7.02	7.19	7.38	7.28	7.12	6.63	5.7
10	7.28	7.46	7.6	7.82	7.81	7.75	7.42	6.71
12	7.46	7.66	7.88	8.08	8.25	8.24	7.94	7.43
14	7.55	7.76	8.07	8.26	8.65	8.71	8.44	7.92
16	7.61	7.83	8.19	8.48	9.01	9.16	8.96	8.4
20	7.65	7.89	8.32	8.79	9.58	9.99	10.29	9.47

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.83	141.5°	3.92
8	40.8°	4.63	147.8°	4.93
10	38.8°	5.11	151.4°	5.82
12	37.8°	5.31	157.4°	6.55
14	37.6°	5.4	168.2°	7.14
16	37.5°	5.45	177.2°	7.65
20	38.2°	5.44	177.2°	8.54

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	5.83	6.81	7.28	7.46	7.55	7.61	7.65
60°	6.13	7.02	7.46	7.66	7.76	7.83	7.89
75°	6.33	7.19	7.60	7.88	8.07	8.19	8.32
90°	6.51	7.38	7.82	8.08	8.26	8.48	8.79
110°	6.29	7.28	7.81	8.25	8.65	9.01	9.58
120°	5.96	7.12	7.75	8.24	8.71	9.16	9.99
135°	5.38	6.63	7.42	7.94	8.44	8.96	10.29
150°	4.53	5.70	6.71	7.43	7.92	8.40	9.47