SPOOM: ORC Rating

GPH

796

OSN

771

LOA

7.23 m

Displacement

1397 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5068

Medium

0.6955

High

0.8155

Triple Offshore

Low

0.652

Medium

0.8524

High

0.9687

Boat Specifications

Dimensions

Length overall: 7.23 m
Beam: 2.45 m
Draft: 1.47 m
Displacement: 1397 kg
Crew weight: 299 kg
Wetted surface: 11.54 m²

Sails

Mainsail: 10.11 m²
Genoa: 14.43 m²
Spinnaker: 32.3 m²
Asymmetric spinnaker: 0 m²

Design

Type: Waarschip 1/4 x1.5
Builder: 't Waar
Designer: Akkerman & Kremer
Year built: 1978

Performance data

Polar CSV

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

6,43.5,3.598142,52,3.99,60,4.21,75,4.38,90,4.38,110,4.49,120,4.37,135,3.9,149,3.418236,150,3.39
8,43.1,4.273023,52,4.73,60,4.98,75,5.16,90,5.3,110,5.39,120,5.29,135,4.83,150,4.26,153,4.152607
10,42.4,4.739623,52,5.25,60,5.44,75,5.59,90,5.77,110,5.84,120,5.78,135,5.55,150,5.05,153,4.927012
12,40.5,5.049934,52,5.54,60,5.68,75,5.82,90,6.05,110,6.18,120,6.11,135,5.9,150,5.62,172,5.099629
14,38.6,5.233388,52,5.73,60,5.86,75,6.02,90,6.23,110,6.52,120,6.46,135,6.23,150,5.93,180,5.54
16,38.2,5.319035,52,5.83,60,6,75,6.21,90,6.34,110,6.82,120,6.8,135,6.57,150,6.22,180,5.86
20,39,5.340052,52,5.85,60,6.06,75,6.44,90,6.7,110,7.16,120,7.43,135,7.26,150,6.85,180,6.44

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	3.99	4.21	4.38	4.38	4.49	4.37	3.9	3.39
8	4.73	4.98	5.16	5.3	5.39	5.29	4.83	4.26
10	5.25	5.44	5.59	5.77	5.84	5.78	5.55	5.05
12	5.54	5.68	5.82	6.05	6.18	6.11	5.9	5.62
14	5.73	5.86	6.02	6.23	6.52	6.46	6.23	5.93
16	5.83	6	6.21	6.34	6.82	6.8	6.57	6.22
20	5.85	6.06	6.44	6.7	7.16	7.43	7.26	6.85

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	2.61	149°	2.93
8	43.1°	3.12	153°	3.7
10	42.4°	3.5	153°	4.39
12	40.5°	3.84	172°	5.05
14	38.6°	4.09	180°	5.54
16	38.2°	4.18	180°	5.86
20	39°	4.15	180°	6.44

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°	3.99	4.73	5.25	5.54	5.73	5.83	5.85
60°	4.21	4.98	5.44	5.68	5.86	6.00	6.06
75°	4.38	5.16	5.59	5.82	6.02	6.21	6.44
90°	4.38	5.30	5.77	6.05	6.23	6.34	6.70
110°	4.49	5.39	5.84	6.18	6.52	6.82	7.16
120°	4.37	5.29	5.78	6.11	6.46	6.80	7.43
135°	3.90	4.83	5.55	5.90	6.23	6.57	7.26
150°	3.39	4.26	5.05	5.62	5.93	6.22	6.85