ASCATA III: ORC Rating

GPH

622.6

OSN

604.2

LOA

12.124 m

Displacement

8476 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6473

Medium

0.8841

High

1.0324

Triple Offshore

Low

0.8359

Medium

1.0897

High

1.2262

Boat Specifications

Dimensions

Length overall: 12.124 m
Beam: 4.14 m
Draft: 2.33 m
Displacement: 8476 kg
Crew weight: 540 kg
Wetted surface: 33.31 m²

Sails

Mainsail: 46.31 m²
Genoa: 41.27 m²
Spinnaker: 94.69 m²
Asymmetric spinnaker: 0 m²

Design

Type: FORTUNA 12
Builder: RONAUTICA
Designer: VISIER
Year built: 1990

Performance data

Polar CSV

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

6,42.8,4.729261,52,5.28,60,5.57,75,5.81,90,5.76,110,5.61,120,5.43,135,4.9,145,4.358165,150,4.12
8,40.5,5.483913,52,6.22,60,6.53,75,6.77,90,6.74,110,6.76,120,6.58,135,5.98,150,5.207699
10,40.5,6.19406,52,6.91,60,7.13,75,7.3,90,7.36,110,7.43,120,7.33,135,6.9,150,6.13,152,6.013947
12,39.4,6.599946,52,7.26,60,7.43,75,7.59,90,7.68,110,7.8,120,7.73,135,7.46,150,6.93,156,6.622549
14,38.2,6.718781,52,7.43,60,7.6,75,7.79,90,7.86,110,8.13,120,8.07,135,7.81,150,7.44,172,6.786041
16,37.9,6.792685,52,7.5,60,7.7,75,7.96,90,8.09,110,8.45,120,8.43,135,8.15,150,7.78,180,7.28
20,37.9,6.818031,52,7.55,60,7.77,75,8.16,90,8.5,110,8.8,120,9.1,135,8.92,150,8.45,180,7.95

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.28	5.57	5.81	5.76	5.61	5.43	4.9	4.12
8	6.22	6.53	6.77	6.74	6.76	6.58	5.98	5.2
10	6.91	7.13	7.3	7.36	7.43	7.33	6.9	6.13
12	7.26	7.43	7.59	7.68	7.8	7.73	7.46	6.93
14	7.43	7.6	7.79	7.86	8.13	8.07	7.81	7.44
16	7.5	7.7	7.96	8.09	8.45	8.43	8.15	7.78
20	7.55	7.77	8.16	8.5	8.8	9.1	8.92	8.45

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.47	145°	3.57
8	40.5°	4.17	150°	4.51
10	40.5°	4.71	152°	5.31
12	39.4°	5.1	156°	6.05
14	38.2°	5.28	172°	6.72
16	37.9°	5.36	180°	7.28
20	37.9°	5.38	180°	7.95

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°	5.28	6.22	6.91	7.26	7.43	7.50	7.55
60°	5.57	6.53	7.13	7.43	7.60	7.70	7.77
75°	5.81	6.77	7.30	7.59	7.79	7.96	8.16
90°	5.76	6.74	7.36	7.68	7.86	8.09	8.50
110°	5.61	6.76	7.43	7.80	8.13	8.45	8.80
120°	5.43	6.58	7.33	7.73	8.07	8.43	9.10
135°	4.90	5.98	6.90	7.46	7.81	8.15	8.92
150°	4.12	5.20	6.13	6.93	7.44	7.78	8.45