Shamrock: ORC Rating

GPH

661.5

OSN

644.9

LOA

10.556 m

Displacement

5080 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6186

Medium

0.8311

High

0.9501

Triple Offshore

Low

0.7982

Medium

1.021

High

1.1339

Boat Specifications

Dimensions

Length overall: 10.556 m
Beam: 3.25 m
Draft: 1.57 m
Displacement: 5080 kg
Crew weight: 622 kg
Wetted surface: 23.49 m²

Sails

Mainsail: 28.93 m²
Genoa: 45.01 m²
Spinnaker: 88.62 m²
Asymmetric spinnaker: 0 m²

Design

Type: C&C 35
Builder: Hinterhoeller
Designer: C&C
Year built: 1969

Performance data

Polar CSV

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

6,43.9,4.496558,52,4.98,60,5.3,75,5.58,90,5.53,110,5.33,120,5.21,135,4.77,147,4.209042,150,4.08
8,43.1,5.2728,52,5.88,60,6.2,75,6.42,90,6.42,110,6.41,120,6.31,135,5.84,150,5.1,151,5.042191
10,43.1,5.943884,52,6.48,60,6.67,75,6.81,90,6.83,110,6.93,120,6.88,135,6.63,150,6,151,5.945441
12,41.6,6.178138,52,6.73,60,6.9,75,7.05,90,7.09,110,7.28,120,7.25,135,7.03,150,6.67,159,6.319755
14,40.9,6.297517,52,6.84,60,7.02,75,7.24,90,7.32,110,7.59,120,7.61,135,7.38,150,7.03,180,6.49
16,40.3,6.333028,52,6.89,60,7.08,75,7.38,90,7.54,110,7.82,120,7.97,135,7.76,150,7.35,180,6.9
20,40.9,6.363667,52,6.91,60,7.12,75,7.49,90,7.88,110,8.14,120,8.47,135,8.5,150,8.05,180,7.53

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.98	5.3	5.58	5.53	5.33	5.21	4.77	4.08
8	5.88	6.2	6.42	6.42	6.41	6.31	5.84	5.1
10	6.48	6.67	6.81	6.83	6.93	6.88	6.63	6
12	6.73	6.9	7.05	7.09	7.28	7.25	7.03	6.67
14	6.84	7.02	7.24	7.32	7.59	7.61	7.38	7.03
16	6.89	7.08	7.38	7.54	7.82	7.97	7.76	7.35
20	6.91	7.12	7.49	7.88	8.14	8.47	8.5	8.05

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.9°	3.24	147°	3.53
8	43.1°	3.85	151°	4.41
10	43.1°	4.34	151°	5.2
12	41.6°	4.62	159°	5.9
14	40.9°	4.76	180°	6.49
16	40.3°	4.83	180°	6.9
20	40.9°	4.81	180°	7.53

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°	4.98	5.88	6.48	6.73	6.84	6.89	6.91
60°	5.30	6.20	6.67	6.90	7.02	7.08	7.12
75°	5.58	6.42	6.81	7.05	7.24	7.38	7.49
90°	5.53	6.42	6.83	7.09	7.32	7.54	7.88
110°	5.33	6.41	6.93	7.28	7.59	7.82	8.14
120°	5.21	6.31	6.88	7.25	7.61	7.97	8.47
135°	4.77	5.84	6.63	7.03	7.38	7.76	8.50
150°	4.08	5.10	6.00	6.67	7.03	7.35	8.05