RIPTIDE — ORC Rating | RegattaPages

GPH

671.4

OSN

652.4

LOA

8.309 m

Displacement

1136 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.613

Medium

0.815

High

0.9168

Triple Offshore

Low

0.7895

Medium

1.0034

High

1.1277

Boat Specifications

Dimensions

Length overall: 8.309 m
Beam: 2.46 m
Draft: 1.34 m
Displacement: 1136 kg
Crew weight: 385 kg
Wetted surface: 12.86 m²

Sails

Mainsail: 17.4 m²
Genoa: 18.72 m²
Spinnaker: 42.71 m²
Asymmetric spinnaker: 40.11 m²

Design

Type: Express 27
Builder: Alsberg
Designer: Schumaker
Year built: 1982
Stability index: 105.5

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.

6,44.1,4.637067,52,5.12,60,5.39,75,5.55,90,5.42,110,5.25,120,5.1,135,4.58,144.2,4.06873,150,3.82
8,41.4,5.372538,52,5.93,60,6.12,75,6.24,90,6.2,110,6.24,120,6.12,135,5.64,146.9,5.049428,150,4.88
10,39.4,5.719953,52,6.29,60,6.46,75,6.63,90,6.66,110,6.82,120,6.72,135,6.39,150,5.76,151.4,5.694871
12,38.8,5.825457,52,6.44,60,6.66,75,6.94,90,7.05,110,7.36,120,7.31,135,6.92,150,6.44,159.2,6.097393
14,38.8,5.889614,52,6.52,60,6.76,75,7.14,90,7.41,110,7.86,120,7.93,135,7.49,150,6.93,173.6,6.289195
16,39,5.919094,52,6.56,60,6.82,75,7.27,90,7.71,110,8.28,120,8.61,135,8.18,150,7.45,175.4,6.731684
20,40.5,5.957344,52,6.57,60,6.87,75,7.42,90,8.08,110,9.04,120,10.24,135,10.42,150,8.81,169.4,7.813332

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.12	5.39	5.55	5.42	5.25	5.1	4.58	3.82
8	5.93	6.12	6.24	6.2	6.24	6.12	5.64	4.88
10	6.29	6.46	6.63	6.66	6.82	6.72	6.39	5.76
12	6.44	6.66	6.94	7.05	7.36	7.31	6.92	6.44
14	6.52	6.76	7.14	7.41	7.86	7.93	7.49	6.93
16	6.56	6.82	7.27	7.71	8.28	8.61	8.18	7.45
20	6.57	6.87	7.42	8.08	9.04	10.24	10.42	8.81

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.1°	3.33	144.2°	3.3
8	41.4°	4.03	146.9°	4.23
10	39.4°	4.42	151.4°	5
12	38.8°	4.54	159.2°	5.7
14	38.8°	4.59	173.6°	6.25
16	39°	4.6	175.4°	6.71
20	40.5°	4.53	169.4°	7.68

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