CHRISTINA: ORC Rating

GPH

673.3

OSN

653.9

LOA

11.266 m

Displacement

7850 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6079

Medium

0.8131

High

0.9233

Triple Offshore

Low

0.7805

Medium

1.0064

High

1.1137

Boat Specifications

Dimensions

Length overall: 11.266 m
Beam: 3.7 m
Draft: 2 m
Displacement: 7850 kg
Crew weight: 500 kg
Wetted surface: 28.3 m²

Sails

Mainsail: 28.1 m²
Genoa: 43.01 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 115.99 m²

Design

Type: OYSTER 37
Builder: OYSTER MARINE
Designer: HOLMAN & PYE
Year built: 1978
Stability index: 122

Performance data

Polar CSV

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

6,43.8,4.39204,52,4.85,60,5.1,75,5.24,90,5.2,110,5.34,120,5.18,135,4.65,145.2,4.189251,150,3.97
8,41.4,5.119242,52,5.7,60,5.94,75,6.1,90,6.19,110,6.39,120,6.29,135,5.81,146.9,5.192674,150,5.02
10,40.2,5.616683,52,6.28,60,6.47,75,6.63,90,6.77,110,6.96,120,6.92,135,6.65,146.6,6.15681,150,5.94
12,40,5.978765,52,6.6,60,6.78,75,6.93,90,7.06,110,7.3,120,7.29,135,7.1,148.2,6.659664,150,6.54
14,40,6.161522,52,6.78,60,6.96,75,7.14,90,7.2,110,7.56,120,7.59,135,7.43,150,6.88,150.1,6.875098
16,39.6,6.242592,52,6.88,60,7.07,75,7.29,90,7.36,110,7.76,120,7.86,135,7.72,150,7.14,173,6.458138
20,39.4,6.315243,52,6.96,60,7.18,75,7.48,90,7.65,110,8.02,120,8.33,135,8.31,150,7.57,176.3,7.11483

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.85	5.1	5.24	5.2	5.34	5.18	4.65	3.97
8	5.7	5.94	6.1	6.19	6.39	6.29	5.81	5.02
10	6.28	6.47	6.63	6.77	6.96	6.92	6.65	5.94
12	6.6	6.78	6.93	7.06	7.3	7.29	7.1	6.54
14	6.78	6.96	7.14	7.2	7.56	7.59	7.43	6.88
16	6.88	7.07	7.29	7.36	7.76	7.86	7.72	7.14
20	6.96	7.18	7.48	7.65	8.02	8.33	8.31	7.57

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.8°	3.17	145.2°	3.44
8	41.4°	3.84	146.9°	4.35
10	40.2°	4.29	146.6°	5.14
12	40°	4.58	148.2°	5.66
14	40°	4.72	150.1°	5.96
16	39.6°	4.81	173°	6.41
20	39.4°	4.88	176.3°	7.1

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°	4.85	5.70	6.28	6.60	6.78	6.88	6.96
60°	5.10	5.94	6.47	6.78	6.96	7.07	7.18
75°	5.24	6.10	6.63	6.93	7.14	7.29	7.48
90°	5.20	6.19	6.77	7.06	7.20	7.36	7.65
110°	5.34	6.39	6.96	7.30	7.56	7.76	8.02
120°	5.18	6.29	6.92	7.29	7.59	7.86	8.33
135°	4.65	5.81	6.65	7.10	7.43	7.72	8.31
150°	3.97	5.02	5.94	6.54	6.88	7.14	7.57