SOFIA: ORC Rating

GPH

678.3

OSN

663.4

LOA

9.28 m

Displacement

2876 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6111

Medium

0.7955

High

0.8959

Triple Offshore

Low

0.7922

Medium

0.9894

High

1.0905

Boat Specifications

Dimensions

Length overall: 9.28 m
Beam: 2.3 m
Draft: 1.53 m
Displacement: 2876 kg
Crew weight: 481 kg
Wetted surface: 17.46 m²

Sails

Mainsail: 24.27 m²
Genoa: 18.42 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 67.73 m²

Design

Type: ARIES 31
Designer: SOTO ACEBAL NA
Year built: 2012
Stability index: 110

Performance data

Polar CSV

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

6,45,4.539626,52,5,60,5.36,75,5.68,90,5.71,110,5.33,120,5.15,135,4.66,145.1,4.206538,150,3.98
8,43,5.264211,52,5.84,60,6.13,75,6.37,90,6.43,110,6.29,120,6.19,135,5.75,147.8,5.128853,150,5.02
10,41.4,5.559177,52,6.19,60,6.44,75,6.71,90,6.82,110,6.8,120,6.76,135,6.49,147.8,5.99154,150,5.86
12,39.4,5.732894,52,6.37,60,6.58,75,6.88,90,7.1,110,7.17,120,7.18,135,6.94,149.2,6.461303,150,6.41
14,39,5.841888,52,6.5,60,6.7,75,7,90,7.29,110,7.48,120,7.57,135,7.36,150,6.75,171.8,5.98115
16,39,5.919094,52,6.57,60,6.78,75,7.08,90,7.45,110,7.76,120,7.92,135,7.79,150,7.04,175.4,6.420682
20,39.4,5.952893,52,6.62,60,6.85,75,7.23,90,7.65,110,8.17,120,8.58,135,8.78,150,7.66,176.3,7.074746

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5	5.36	5.68	5.71	5.33	5.15	4.66	3.98
8	5.84	6.13	6.37	6.43	6.29	6.19	5.75	5.02
10	6.19	6.44	6.71	6.82	6.8	6.76	6.49	5.86
12	6.37	6.58	6.88	7.1	7.17	7.18	6.94	6.41
14	6.5	6.7	7	7.29	7.48	7.57	7.36	6.75
16	6.57	6.78	7.08	7.45	7.76	7.92	7.79	7.04
20	6.62	6.85	7.23	7.65	8.17	8.58	8.78	7.66

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45°	3.21	145.1°	3.45
8	43°	3.85	147.8°	4.34
10	41.4°	4.17	147.8°	5.07
12	39.4°	4.43	149.2°	5.55
14	39°	4.54	171.8°	5.92
16	39°	4.6	175.4°	6.4
20	39.4°	4.6	176.3°	7.06

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°	5.00	5.84	6.19	6.37	6.50	6.57	6.62
60°	5.36	6.13	6.44	6.58	6.70	6.78	6.85
75°	5.68	6.37	6.71	6.88	7.00	7.08	7.23
90°	5.71	6.43	6.82	7.10	7.29	7.45	7.65
110°	5.33	6.29	6.80	7.17	7.48	7.76	8.17
120°	5.15	6.19	6.76	7.18	7.57	7.92	8.58
135°	4.66	5.75	6.49	6.94	7.36	7.79	8.78
150°	3.98	5.02	5.86	6.41	6.75	7.04	7.66