Kårstua: ORC Rating

GPH

644.3

OSN

627.3

LOA

9.25 m

Displacement

3873 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.716

Medium

0.9588

High

1.0839

Triple Offshore

Low

0.9244

Medium

1.1793

High

1.3046

Boat Specifications

Dimensions

Length overall: 9.25 m
Beam: 3.2 m
Draft: 2.16 m
Displacement: 3873 kg
Crew weight: 570 kg
Wetted surface: 22.27 m²

Sails

Mainsail: 31.05 m²
Genoa: 25.24 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 94.15 m²

Design

Type: Elan 310 2.15
Builder: Elan
Designer: Humphreys Rob
Year built: 2009

Performance data

Polar CSV

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

6,42.5,4.475928,52,5.03,60,5.31,75,5.52,90,5.65,110,5.75,120,5.58,135,4.98,144.8,4.47901,150,4.22
8,40.8,5.24442,52,5.93,60,6.21,75,6.42,90,6.64,110,6.75,120,6.65,135,6.15,147.8,5.400658,150,5.27
10,40.2,5.904718,52,6.54,60,6.72,75,6.86,90,7.03,110,7.21,120,7.15,135,6.88,148,6.34398,150,6.21
12,38.8,6.197568,52,6.82,60,6.98,75,7.13,90,7.18,110,7.6,120,7.58,135,7.29,150,6.79,150.5,6.767348
14,38.1,6.27752,52,6.93,60,7.11,75,7.34,90,7.4,110,7.86,120,8.06,135,7.74,150,7.1,174.3,6.321255
16,38,6.307021,52,6.97,60,7.16,75,7.5,90,7.67,110,8.05,120,8.44,135,8.24,150,7.39,177,6.789305
20,37.8,6.391151,52,7.02,60,7.21,75,7.59,90,8.08,110,8.41,120,8.92,135,9.46,150,8.25,177.5,7.427069

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.03	5.31	5.52	5.65	5.75	5.58	4.98	4.22
8	5.93	6.21	6.42	6.64	6.75	6.65	6.15	5.27
10	6.54	6.72	6.86	7.03	7.21	7.15	6.88	6.21
12	6.82	6.98	7.13	7.18	7.6	7.58	7.29	6.79
14	6.93	7.11	7.34	7.4	7.86	8.06	7.74	7.1
16	6.97	7.16	7.5	7.67	8.05	8.44	8.24	7.39
20	7.02	7.21	7.59	8.08	8.41	8.92	9.46	8.25

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.5°	3.3	144.8°	3.66
8	40.8°	3.97	147.8°	4.57
10	40.2°	4.51	148°	5.38
12	38.8°	4.83	150.5°	5.89
14	38.1°	4.94	174.3°	6.29
16	38°	4.97	177°	6.78
20	37.8°	5.05	177.5°	7.42

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°	5.03	5.93	6.54	6.82	6.93	6.97	7.02
60°	5.31	6.21	6.72	6.98	7.11	7.16	7.21
75°	5.52	6.42	6.86	7.13	7.34	7.50	7.59
90°	5.65	6.64	7.03	7.18	7.40	7.67	8.08
110°	5.75	6.75	7.21	7.60	7.86	8.05	8.41
120°	5.58	6.65	7.15	7.58	8.06	8.44	8.92
135°	4.98	6.15	6.88	7.29	7.74	8.24	9.46
150°	4.22	5.27	6.21	6.79	7.10	7.39	8.25