RAMBLER 77 — ORC Rating

GPH

515.2

OSN

502.9

LOA

14.21 m

Displacement

7735 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8956

Medium

1.1841

High

1.3421

Triple Offshore

Low

1.1622

Medium

1.4699

High

1.6436

Boat Specifications

Dimensions

Length overall: 14.21 m
Beam: 4.3 m
Draft: 3.17 m
Displacement: 7735 kg
Crew weight: 888 kg
Wetted surface: 37.6 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

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.

6,41.9,5.978679,52,6.75,60,7.13,75,7.43,90,7.33,110,6.82,120,6.58,135,5.82,141.7,5.351843,150,4.85
8,40.6,7.085741,52,7.93,60,8.18,75,8.35,90,8.3,110,8.18,120,8.02,135,7.3,143.7,6.563859,150,6.11
10,39,7.514676,52,8.32,60,8.56,75,8.81,90,8.81,110,8.87,120,8.74,135,8.29,146.4,7.56374,150,7.27
12,37.7,7.671663,52,8.49,60,8.75,75,9.16,90,9.3,110,9.46,120,9.42,135,8.9,150,8.18,151.1,8.087135
14,36.9,7.753056,52,8.59,60,8.87,75,9.37,90,9.73,110,9.84,120,10.12,135,9.57,150,8.69,151.6,8.582973
16,36.4,7.814696,52,8.65,60,8.96,75,9.52,90,10.04,110,10.21,120,10.66,135,10.31,150,9.2,175.3,8.057093
20,36.2,7.943389,52,8.84,60,9.18,75,9.68,90,10.38,110,11.03,120,11.54,135,12.32,144.2,11.244491,150,10.54

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.75	7.13	7.43	7.33	6.82	6.58	5.82	4.85
8	7.93	8.18	8.35	8.3	8.18	8.02	7.3	6.11
10	8.32	8.56	8.81	8.81	8.87	8.74	8.29	7.27
12	8.49	8.75	9.16	9.3	9.46	9.42	8.9	8.18
14	8.59	8.87	9.37	9.73	9.84	10.12	9.57	8.69
16	8.65	8.96	9.52	10.04	10.21	10.66	10.31	9.2
20	8.84	9.18	9.68	10.38	11.03	11.54	12.32	10.54

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.9°	4.45	141.7°	4.2
8	40.6°	5.38	143.7°	5.29
10	39°	5.84	146.4°	6.3
12	37.7°	6.07	151.1°	7.08
14	36.9°	6.2	151.6°	7.55
16	36.4°	6.29	175.3°	8.03
20	36.2°	6.41	144.2°	9.12

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