FORTUNATE SUN: ORC Rating

GPH

639.6

OSN

621.5

LOA

12.573 m

Displacement

10037 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6193

Medium

0.8437

High

0.9677

Triple Offshore

Low

0.8073

Medium

1.0655

High

1.1966

Boat Specifications

Dimensions

Length overall: 12.573 m
Beam: 4.11 m
Draft: 1.61 m
Displacement: 10037 kg
Crew weight: 527 kg
Wetted surface: 38.15 m²

Sails

Mainsail: 49.46 m²
Genoa: 50.65 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 120.02 m²

Design

Type: TARTAN 4100
Builder: TARTAN
Designer: JACKETT
Year built: 1997
Stability index: 116.1

Performance data

Polar CSV

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

6,47.1,4.627447,52,4.98,60,5.39,75,5.67,90,5.59,110,5.55,120,5.39,135,4.86,144.2,4.401627,150,4.12
8,45.4,5.497377,52,5.99,60,6.37,75,6.64,90,6.59,110,6.74,120,6.57,135,6.05,147.5,5.406742,150,5.26
10,44.2,6.0956,52,6.7,60,7.03,75,7.28,90,7.34,110,7.52,120,7.41,135,6.99,147.8,6.346069,150,6.2
12,43.8,6.511858,52,7.12,60,7.41,75,7.66,90,7.76,110,7.98,120,7.93,135,7.63,147.9,7.082806,150,6.93
14,43.5,6.686203,52,7.31,60,7.61,75,7.9,90,8,110,8.33,120,8.33,135,8.06,149.2,7.49744,150,7.43
16,43,6.740924,52,7.41,60,7.71,75,8.06,90,8.23,110,8.65,120,8.71,135,8.47,150,7.79,172.1,6.966112
20,43.2,6.804134,52,7.48,60,7.79,75,8.24,90,8.61,110,9.1,120,9.38,135,9.26,150,8.4,176.3,7.79625

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.98	5.39	5.67	5.59	5.55	5.39	4.86	4.12
8	5.99	6.37	6.64	6.59	6.74	6.57	6.05	5.26
10	6.7	7.03	7.28	7.34	7.52	7.41	6.99	6.2
12	7.12	7.41	7.66	7.76	7.98	7.93	7.63	6.93
14	7.31	7.61	7.9	8	8.33	8.33	8.06	7.43
16	7.41	7.71	8.06	8.23	8.65	8.71	8.47	7.79
20	7.48	7.79	8.24	8.61	9.1	9.38	9.26	8.4

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	47.1°	3.15	144.2°	3.57
8	45.4°	3.86	147.5°	4.56
10	44.2°	4.37	147.8°	5.37
12	43.8°	4.7	147.9°	6
14	43.5°	4.85	149.2°	6.44
16	43°	4.93	172.1°	6.9
20	43.2°	4.96	176.3°	7.78

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°	4.98	5.99	6.70	7.12	7.31	7.41	7.48
60°	5.39	6.37	7.03	7.41	7.61	7.71	7.79
75°	5.67	6.64	7.28	7.66	7.90	8.06	8.24
90°	5.59	6.59	7.34	7.76	8.00	8.23	8.61
110°	5.55	6.74	7.52	7.98	8.33	8.65	9.10
120°	5.39	6.57	7.41	7.93	8.33	8.71	9.38
135°	4.86	6.05	6.99	7.63	8.06	8.47	9.26
150°	4.12	5.26	6.20	6.93	7.43	7.79	8.40