BAHANAROTU IV: ORC Rating

GPH

651.4

OSN

631.8

LOA

11.639 m

Displacement

8035 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5945

Medium

0.8301

High

0.993

Triple Offshore

Low

0.7797

Medium

1.0496

High

1.2124

Boat Specifications

Dimensions

Length overall: 11.639 m
Beam: 3.94 m
Draft: 2.08 m
Displacement: 8035 kg
Crew weight: 540 kg
Wetted surface: 32.97 m²

Sails

Mainsail: 30.76 m²
Genoa: 41.96 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 81.05 m²

Design

Type: DUFOUR 385 GL MOD
Builder: DUFOUR
Designer: FELCI
Year built: 2001
Stability index: 122.3

Performance data

Polar CSV

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

6,46,4.44823,52,4.86,60,5.27,75,5.69,90,5.7,110,5.19,120,5.02,135,4.53,145.1,4.072416,150,3.85
8,44.2,5.286573,52,5.86,60,6.3,75,6.73,90,6.71,110,6.37,120,6.18,135,5.67,147.1,5.085635,150,4.93
10,43.8,6.013077,52,6.68,60,7.06,75,7.34,90,7.34,110,7.25,120,7.11,135,6.64,146.6,6.037028,150,5.82
12,43,6.563172,52,7.19,60,7.46,75,7.66,90,7.68,110,7.72,120,7.64,135,7.34,146.8,6.823905,150,6.6
14,40,6.696739,52,7.43,60,7.68,75,7.9,90,7.95,110,8.07,120,8,135,7.75,148.3,7.251903,150,7.13
16,39.4,6.923473,52,7.56,60,7.81,75,8.1,90,8.19,110,8.44,120,8.37,135,8.09,150,7.49,164,6.761946
20,38.7,7.047393,52,7.71,60,7.95,75,8.36,90,8.69,110,9.18,120,9.19,135,8.85,150,8,175.4,7.45401

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.86	5.27	5.69	5.7	5.19	5.02	4.53	3.85
8	5.86	6.3	6.73	6.71	6.37	6.18	5.67	4.93
10	6.68	7.06	7.34	7.34	7.25	7.11	6.64	5.82
12	7.19	7.46	7.66	7.68	7.72	7.64	7.34	6.6
14	7.43	7.68	7.9	7.95	8.07	8	7.75	7.13
16	7.56	7.81	8.1	8.19	8.44	8.37	8.09	7.49
20	7.71	7.95	8.36	8.69	9.18	9.19	8.85	8

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	46°	3.09	145.1°	3.34
8	44.2°	3.79	147.1°	4.27
10	43.8°	4.34	146.6°	5.04
12	43°	4.8	146.8°	5.71
14	40°	5.13	148.3°	6.17
16	39.4°	5.35	164°	6.5
20	38.7°	5.5	175.4°	7.43

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°	4.86	5.86	6.68	7.19	7.43	7.56	7.71
60°	5.27	6.30	7.06	7.46	7.68	7.81	7.95
75°	5.69	6.73	7.34	7.66	7.90	8.10	8.36
90°	5.70	6.71	7.34	7.68	7.95	8.19	8.69
110°	5.19	6.37	7.25	7.72	8.07	8.44	9.18
120°	5.02	6.18	7.11	7.64	8.00	8.37	9.19
135°	4.53	5.67	6.64	7.34	7.75	8.09	8.85
150°	3.85	4.93	5.82	6.60	7.13	7.49	8.00