Bottleneck — ORC Rating

GPH

776.4

OSN

751.5

LOA

7.644 m

Displacement

1900 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5362

Medium

0.7182

High

0.8092

Triple Offshore

Low

0.6816

Medium

0.8704

High

0.9597

Boat Specifications

Dimensions

Length overall: 7.644 m
Beam: 3 m
Draft: 1.53 m
Displacement: 1900 kg
Crew weight: 270 kg
Wetted surface: 13.71 m²

Sails

Mainsail: 13.82 m²
Genoa: 20.09 m²
Spinnaker: 43.17 m²
Asymmetric spinnaker: 0 m²

Design

Type: Carter Dingbad 765
Builder: Carter
Designer: Carter
Year built: 1977
Stability index: 99

Velocity Prediction

Polar CSV

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

6,42.4,3.832324,52,4.27,60,4.46,75,4.58,90,4.49,110,4.57,120,4.44,135,4.03,147.9,3.553208,150,3.48
8,40.8,4.465023,52,4.98,60,5.16,75,5.28,90,5.32,110,5.43,120,5.33,135,4.94,150,4.4,152.3,4.314465
10,39.6,4.879864,52,5.4,60,5.55,75,5.67,90,5.77,110,5.89,120,5.83,135,5.6,150,5.16,155.6,4.941343
12,38.4,5.091276,52,5.63,60,5.76,75,5.91,90,6,110,6.21,120,6.18,135,5.99,150,5.68,166.4,5.247124
14,38.2,5.17906,52,5.74,60,5.89,75,6.08,90,6.15,110,6.45,120,6.49,135,6.32,150,6.02,177.2,5.58667
16,38.4,5.218877,52,5.78,60,5.95,75,6.2,90,6.34,110,6.66,120,6.76,135,6.63,150,6.33,179,5.920902
20,40.2,5.276278,52,5.79,60,5.98,75,6.32,90,6.6,110,6.98,120,7.31,135,7.32,150,6.93,179,6.490989

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.27	4.46	4.58	4.49	4.57	4.44	4.03	3.48
8	4.98	5.16	5.28	5.32	5.43	5.33	4.94	4.4
10	5.4	5.55	5.67	5.77	5.89	5.83	5.6	5.16
12	5.63	5.76	5.91	6	6.21	6.18	5.99	5.68
14	5.74	5.89	6.08	6.15	6.45	6.49	6.32	6.02
16	5.78	5.95	6.2	6.34	6.66	6.76	6.63	6.33
20	5.79	5.98	6.32	6.6	6.98	7.31	7.32	6.93

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	2.83	147.9°	3.01
8	40.8°	3.38	152.3°	3.82
10	39.6°	3.76	155.6°	4.5
12	38.4°	3.99	166.4°	5.1
14	38.2°	4.07	177.2°	5.58
16	38.4°	4.09	179°	5.92
20	40.2°	4.03	179°	6.49

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