Bottleneck — ORC Rating

GPH

776.3

OSN

752

LOA

7.644 m

Displacement

1900 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5299

Medium

0.7164

High

0.8119

Triple Offshore

Low

0.6779

Medium

0.8717

High

0.9666

Boat Specifications

Dimensions

Length overall: 7.644 m
Beam: 3 m
Draft: 1.53 m
Displacement: 1900 kg
Crew weight: 270 kg
Wetted surface: 13.73 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: 97.4

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.

6,42.9,3.740395,52,4.18,60,4.41,75,4.57,90,4.51,110,4.6,120,4.47,135,4.07,148.7,3.569511,150,3.53
8,41.8,4.386459,52,4.93,60,5.17,75,5.33,90,5.39,110,5.5,120,5.4,135,5,150,4.42,152,4.349069
10,41.4,4.919271,52,5.41,60,5.57,75,5.69,90,5.83,110,5.92,120,5.87,135,5.65,150,5.22,153.8,5.059858
12,39.6,5.15241,52,5.65,60,5.78,75,5.92,90,6.08,110,6.25,120,6.21,135,6.01,150,5.73,165.8,5.322631
14,39.4,5.279957,52,5.77,60,5.93,75,6.11,90,6.21,110,6.57,120,6.55,135,6.35,150,6.04,177.2,5.636729
16,39.4,5.31878,52,5.82,60,6,75,6.28,90,6.41,110,6.81,120,6.87,135,6.7,150,6.36,179,5.950906
20,40.9,5.331721,52,5.81,60,6.03,75,6.43,90,6.75,110,7.05,120,7.32,135,7.35,150,7,179,6.540996

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.18	4.41	4.57	4.51	4.6	4.47	4.07	3.53
8	4.93	5.17	5.33	5.39	5.5	5.4	5	4.42
10	5.41	5.57	5.69	5.83	5.92	5.87	5.65	5.22
12	5.65	5.78	5.92	6.08	6.25	6.21	6.01	5.73
14	5.77	5.93	6.11	6.21	6.57	6.55	6.35	6.04
16	5.82	6	6.28	6.41	6.81	6.87	6.7	6.36
20	5.81	6.03	6.43	6.75	7.05	7.32	7.35	7

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	2.74	148.7°	3.05
8	41.8°	3.27	152°	3.84
10	41.4°	3.69	153.8°	4.54
12	39.6°	3.97	165.8°	5.16
14	39.4°	4.08	177.2°	5.63
16	39.4°	4.11	179°	5.95
20	40.9°	4.03	179°	6.54

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