RAMBLER 77 — ORC Rating

GPH

515

OSN

503.1

LOA

14.21 m

Displacement

7724 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8076

Medium

1.0542

High

1.1896

Triple Offshore

Low

1.0411

Medium

1.3019

High

1.4555

Boat Specifications

Dimensions

Length overall: 14.21 m
Beam: 4.3 m
Draft: 3.17 m
Displacement: 7724 kg
Crew weight: 882 kg
Wetted surface: 37.53 m²

Sails

Mainsail: 74.1 m²
Genoa: 62.27 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 162.36 m²

Design

Type: J/V 47
Builder: Magrathea
Designer: JUDEL/VROLIJK
Year built: 1995
Stability index: 129.6

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.

6,41.8,6.130311,52,6.87,60,7.19,75,7.4,90,7.27,110,6.97,120,6.57,135,5.85,141.7,5.402813,150,4.89
8,39.4,7.027002,52,7.86,60,8.11,75,8.26,90,8.27,110,8.12,120,7.93,135,7.29,144.7,6.56752,150,6.19
10,37.5,7.361159,52,8.25,60,8.49,75,8.71,90,8.81,110,8.78,120,8.69,135,8.24,148.7,7.408198,150,7.31
12,37,7.587942,52,8.44,60,8.69,75,9.01,90,9.17,110,9.35,120,9.32,135,8.89,150,8.17,151,8.094947
14,36.4,7.690456,52,8.57,60,8.83,75,9.21,90,9.49,110,9.89,120,9.93,135,9.55,150,8.71,150.5,8.674614
16,36,7.762507,52,8.66,60,8.93,75,9.37,90,9.77,110,10.42,120,10.53,135,10.29,148.4,9.3692,150,9.21
20,36.3,7.866705,52,8.76,60,9.06,75,9.59,90,10.17,110,11.33,120,11.88,135,12.21,144.1,11.357441,150,10.62

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.87	7.19	7.4	7.27	6.97	6.57	5.85	4.89
8	7.86	8.11	8.26	8.27	8.12	7.93	7.29	6.19
10	8.25	8.49	8.71	8.81	8.78	8.69	8.24	7.31
12	8.44	8.69	9.01	9.17	9.35	9.32	8.89	8.17
14	8.57	8.83	9.21	9.49	9.89	9.93	9.55	8.71
16	8.66	8.93	9.37	9.77	10.42	10.53	10.29	9.21
20	8.76	9.06	9.59	10.17	11.33	11.88	12.21	10.62

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.8°	4.57	141.7°	4.24
8	39.4°	5.43	144.7°	5.36
10	37.5°	5.84	148.7°	6.33
12	37°	6.06	151°	7.08
14	36.4°	6.19	150.5°	7.55
16	36°	6.28	148.4°	7.98
20	36.3°	6.34	144.1°	9.2

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