Suomenlahden Ykkonen: ORC Rating

GPH

644.2

OSN

627.4

LOA

9.764 m

Displacement

3000 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6341

Medium

0.8574

High

0.9718

Triple Offshore

Low

0.8206

Medium

1.0482

High

1.1664

Boat Specifications

Dimensions

Length overall: 9.764 m
Beam: 3.01 m
Draft: 1.85 m
Displacement: 3000 kg
Crew weight: 485 kg
Wetted surface: 19.93 m²

Sails

Mainsail: 32.97 m²
Genoa: 24.08 m²
Spinnaker: 64.84 m²
Asymmetric spinnaker: 0 m²

Design

Type: Mach3 3/4Ton
Builder: Framboat
Designer: Cristian Bergenhei
Year built: 1981

Performance data

Polar CSV

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

6,42.4,4.658372,52,5.22,60,5.5,75,5.74,90,5.66,110,5.6,120,5.39,135,4.8,145.5,4.186252,150,3.98
8,41.2,5.502283,52,6.14,60,6.36,75,6.51,90,6.54,110,6.6,120,6.47,135,5.92,150,5.034494
10,39.2,5.974621,52,6.59,60,6.75,75,6.88,90,6.98,110,7.09,120,7,135,6.7,150,6.027537
12,38.2,6.146157,52,6.77,60,6.96,75,7.17,90,7.23,110,7.55,120,7.47,135,7.14,150,6.72,160,6.353141
14,37.9,6.222404,52,6.85,60,7.06,75,7.39,90,7.55,110,7.94,120,7.95,135,7.61,150,7.13,180,6.57
16,37.9,6.24775,52,6.89,60,7.12,75,7.53,90,7.82,110,8.19,120,8.42,135,8.09,150,7.56,180,7
20,38.8,6.300219,52,6.92,60,7.15,75,7.64,90,8.15,110,8.64,120,9.19,135,9.34,150,8.5,180,7.82

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.22	5.5	5.74	5.66	5.6	5.39	4.8	3.98
8	6.14	6.36	6.51	6.54	6.6	6.47	5.92	5.04
10	6.59	6.75	6.88	6.98	7.09	7	6.7	6.03
12	6.77	6.96	7.17	7.23	7.55	7.47	7.14	6.72
14	6.85	7.06	7.39	7.55	7.94	7.95	7.61	7.13
16	6.89	7.12	7.53	7.82	8.19	8.42	8.09	7.56
20	6.92	7.15	7.64	8.15	8.64	9.19	9.34	8.5

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.44	145.5°	3.45
8	41.2°	4.14	150°	4.36
10	39.2°	4.63	150°	5.22
12	38.2°	4.83	160°	5.97
14	37.9°	4.91	180°	6.57
16	37.9°	4.93	180°	7
20	38.8°	4.91	180°	7.82

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°	5.22	6.14	6.59	6.77	6.85	6.89	6.92
60°	5.50	6.36	6.75	6.96	7.06	7.12	7.15
75°	5.74	6.51	6.88	7.17	7.39	7.53	7.64
90°	5.66	6.54	6.98	7.23	7.55	7.82	8.15
110°	5.60	6.60	7.09	7.55	7.94	8.19	8.64
120°	5.39	6.47	7.00	7.47	7.95	8.42	9.19
135°	4.80	5.92	6.70	7.14	7.61	8.09	9.34
150°	3.98	5.04	6.03	6.72	7.13	7.56	8.50