ORC Rating | Offwind

GPH

747.9

OSN

732.1

LOA

7.457 m

Displacement

2431 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6355

Medium

0.8256

High

0.9255

Triple Offshore

Low

0.8112

Medium

1.0079

High

1.1024

Boat Specifications

Dimensions

Length overall: 7.457 m
Beam: 2.36 m
Draft: 1.39 m
Displacement: 2431 kg
Crew weight: 353 kg
Wetted surface: 14.54 m²

Sails

Mainsail: 19.06 m²
Genoa: 20.62 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 42.83 m²

Design

Type: Spækhugger
Builder: Flipper Scow A/S
Designer: Peter Bruun
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.

6,41.2,3.973871,52,4.49,60,4.73,75,4.9,90,4.86,110,4.9,120,4.73,135,4.3,147.5,3.829776,150,3.73
8,41.1,4.67114,52,5.26,60,5.45,75,5.57,90,5.66,110,5.7,120,5.6,135,5.23,147.3,4.705822,150,4.57
10,40.1,5.163929,52,5.65,60,5.77,75,5.87,90,6.01,110,6.06,120,5.99,135,5.78,147.9,5.394737,150,5.28
12,39.2,5.342318,52,5.83,60,5.95,75,6.07,90,6.23,110,6.37,120,6.31,135,6.1,150,5.7,174.5,4.98294
14,38.8,5.402021,52,5.91,60,6.07,75,6.25,90,6.34,110,6.68,120,6.64,135,6.41,150,5.95,176.9,5.518075
16,38.7,5.4329,52,5.95,60,6.12,75,6.39,90,6.54,110,6.91,120,6.94,135,6.73,150,6.18,178.3,5.842572
20,38.9,5.435319,52,5.96,60,6.16,75,6.52,90,6.85,110,7.14,120,7.36,135,7.28,150,6.68,178.2,6.32312

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.49	4.73	4.9	4.86	4.9	4.73	4.3	3.73
8	5.26	5.45	5.57	5.66	5.7	5.6	5.23	4.57
10	5.65	5.77	5.87	6.01	6.06	5.99	5.78	5.28
12	5.83	5.95	6.07	6.23	6.37	6.31	6.1	5.7
14	5.91	6.07	6.25	6.34	6.68	6.64	6.41	5.95
16	5.95	6.12	6.39	6.54	6.91	6.94	6.73	6.18
20	5.96	6.16	6.52	6.85	7.14	7.36	7.28	6.68

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.2°	2.99	147.5°	3.23
8	41.1°	3.52	147.3°	3.96
10	40.1°	3.95	147.9°	4.57
12	39.2°	4.14	174.5°	4.96
14	38.8°	4.21	176.9°	5.51
16	38.7°	4.24	178.3°	5.84
20	38.9°	4.23	178.2°	6.32

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°	4.49	5.26	5.65	5.83	5.91	5.95	5.96
60°	4.73	5.45	5.77	5.95	6.07	6.12	6.16
75°	4.90	5.57	5.87	6.07	6.25	6.39	6.52
90°	4.86	5.66	6.01	6.23	6.34	6.54	6.85
110°	4.90	5.70	6.06	6.37	6.68	6.91	7.14
120°	4.73	5.60	5.99	6.31	6.64	6.94	7.36
135°	4.30	5.23	5.78	6.10	6.41	6.73	7.28
150°	3.73	4.57	5.28	5.70	5.95	6.18	6.68