GATTAMATTA: ORC Rating

GPH

675.5

OSN

657.4

LOA

7.53 m

Displacement

1312 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6276

Medium

0.8162

High

0.9088

Triple Offshore

Low

0.8

Medium

0.9903

High

1.0964

Boat Specifications

Dimensions

Length overall: 7.53 m
Beam: 2.58 m
Draft: 1.6 m
Displacement: 1312 kg
Crew weight: 400 kg
Wetted surface: 12.16 m²

Sails

Mainsail: 20.99 m²
Genoa: 13.17 m²
Spinnaker: 39.92 m²
Asymmetric spinnaker: 0 m²

Design

Type: FArr Platu 25
Builder: Beneteau
Designer: Farr
Year built: 1997
Stability index: 107.4

Performance data

Polar CSV

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

6,42.4,4.604205,52,5.12,60,5.34,75,5.47,90,5.41,110,5.4,120,5.23,135,4.71,144.2,4.216684,150,3.95
8,39.4,5.279957,52,5.86,60,6.01,75,6.11,90,6.15,110,6.23,120,6.11,135,5.73,149.6,5.02021,150,5
10,37.5,5.546079,52,6.15,60,6.3,75,6.45,90,6.47,110,6.72,120,6.64,135,6.31,150,5.84,155,5.627227
12,37,5.63461,52,6.26,60,6.44,75,6.71,90,6.82,110,7.13,120,7.17,135,6.79,150,6.36,166.4,5.88501
14,37.2,5.699723,52,6.32,60,6.53,75,6.87,90,7.12,110,7.45,120,7.67,135,7.32,150,6.81,177.2,6.237447
16,37.5,5.747754,52,6.36,60,6.59,75,6.98,90,7.37,110,7.72,120,8.16,135,8,150,7.3,177.2,6.647937
20,38.7,5.766049,52,6.38,60,6.63,75,7.11,90,7.66,110,8.25,120,8.94,135,9.83,150,8.65,173.9,7.613106

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.12	5.34	5.47	5.41	5.4	5.23	4.71	3.95
8	5.86	6.01	6.11	6.15	6.23	6.11	5.73	5
10	6.15	6.3	6.45	6.47	6.72	6.64	6.31	5.84
12	6.26	6.44	6.71	6.82	7.13	7.17	6.79	6.36
14	6.32	6.53	6.87	7.12	7.45	7.67	7.32	6.81
16	6.36	6.59	6.98	7.37	7.72	8.16	8	7.3
20	6.38	6.63	7.11	7.66	8.25	8.94	9.83	8.65

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.4	144.2°	3.42
8	39.4°	4.08	149.6°	4.33
10	37.5°	4.4	155°	5.1
12	37°	4.5	166.4°	5.72
14	37.2°	4.54	177.2°	6.23
16	37.5°	4.56	177.2°	6.64
20	38.7°	4.5	173.9°	7.57

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°	5.12	5.86	6.15	6.26	6.32	6.36	6.38
60°	5.34	6.01	6.30	6.44	6.53	6.59	6.63
75°	5.47	6.11	6.45	6.71	6.87	6.98	7.11
90°	5.41	6.15	6.47	6.82	7.12	7.37	7.66
110°	5.40	6.23	6.72	7.13	7.45	7.72	8.25
120°	5.23	6.11	6.64	7.17	7.67	8.16	8.94
135°	4.71	5.73	6.31	6.79	7.32	8.00	9.83
150°	3.95	5.00	5.84	6.36	6.81	7.30	8.65