FORTUNATE SUN: ORC Rating

GPH

634.4

OSN

617

LOA

12.573 m

Displacement

10037 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6245

Medium

0.8491

High

0.9757

Triple Offshore

Low

0.8154

Medium

1.0735

High

1.2033

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: 116.4

Performance data

Polar CSV

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

6,47.1,4.627447,52,4.97,60,5.39,75,5.73,90,5.7,110,5.64,120,5.5,135,4.97,144.3,4.506926,150,4.23
8,45.4,5.454651,52,5.96,60,6.37,75,6.72,90,6.72,110,6.86,120,6.69,135,6.14,147.8,5.471564,150,5.35
10,45.3,6.170078,52,6.74,60,7.12,75,7.38,90,7.46,110,7.61,120,7.52,135,7.11,147.8,6.44061,150,6.29
12,45.3,6.696098,52,7.22,60,7.51,75,7.73,90,7.83,110,8.01,120,7.96,135,7.7,148.4,7.185402,150,7.06
14,44.2,6.820934,52,7.4,60,7.69,75,7.94,90,8.02,110,8.36,120,8.33,135,8.08,150,7.54,150.3,7.517572
16,43.8,6.885943,52,7.49,60,7.76,75,8.09,90,8.25,110,8.69,120,8.74,135,8.46,150,7.85,171.8,7.072306
20,43.8,6.913653,52,7.52,60,7.81,75,8.22,90,8.64,110,9.11,120,9.5,135,9.3,150,8.39,177.2,7.829347

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.97	5.39	5.73	5.7	5.64	5.5	4.97	4.23
8	5.96	6.37	6.72	6.72	6.86	6.69	6.14	5.35
10	6.74	7.12	7.38	7.46	7.61	7.52	7.11	6.29
12	7.22	7.51	7.73	7.83	8.01	7.96	7.7	7.06
14	7.4	7.69	7.94	8.02	8.36	8.33	8.08	7.54
16	7.49	7.76	8.09	8.25	8.69	8.74	8.46	7.85
20	7.52	7.81	8.22	8.64	9.11	9.5	9.3	8.39

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	47.1°	3.15	144.3°	3.66
8	45.4°	3.83	147.8°	4.63
10	45.3°	4.34	147.8°	5.45
12	45.3°	4.71	148.4°	6.12
14	44.2°	4.89	150.3°	6.53
16	43.8°	4.97	171.8°	7
20	43.8°	4.99	177.2°	7.82

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°	4.97	5.96	6.74	7.22	7.40	7.49	7.52
60°	5.39	6.37	7.12	7.51	7.69	7.76	7.81
75°	5.73	6.72	7.38	7.73	7.94	8.09	8.22
90°	5.70	6.72	7.46	7.83	8.02	8.25	8.64
110°	5.64	6.86	7.61	8.01	8.36	8.69	9.11
120°	5.50	6.69	7.52	7.96	8.33	8.74	9.50
135°	4.97	6.14	7.11	7.70	8.08	8.46	9.30
150°	4.23	5.35	6.29	7.06	7.54	7.85	8.39