Expresso — ORC Rating

GPH

729.8

OSN

707.4

LOA

7.77 m

Displacement

1838 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.555

Medium

0.7607

High

0.87

Triple Offshore

Low

0.718

Medium

0.9283

High

1.0386

Boat Specifications

Dimensions

Length overall: 7.77 m
Beam: 2.52 m
Draft: 1.44 m
Displacement: 1838 kg
Crew weight: 403 kg
Wetted surface: 14.05 m²

Sails

Mainsail: 19.18 m²
Genoa: 14.81 m²
Spinnaker: 42.75 m²
Asymmetric spinnaker: 0 m²

Design

Type: EXPRESS
Builder: Albin Marin AB
Designer: Peter Norlin
Year built: 1978
Stability index: 111.6

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.

6,43.5,3.98415,52,4.42,60,4.67,75,4.86,90,4.97,110,5,120,4.83,135,4.32,147.5,3.746777,150,3.65
8,42,4.669346,52,5.26,60,5.52,75,5.67,90,5.86,110,5.91,120,5.79,135,5.28,150,4.61,152,4.53028
10,41.2,5.236473,52,5.76,60,5.92,75,6.04,90,6.25,110,6.33,120,6.25,135,6.01,150,5.48,152.3,5.37614
12,39,5.481596,52,6.01,60,6.15,75,6.28,90,6.5,110,6.72,120,6.63,135,6.37,150,6.06,162.8,5.705143
14,38.4,5.5634,52,6.13,60,6.3,75,6.5,90,6.65,110,7.1,120,7.07,135,6.77,150,6.4,177.5,5.965678
16,38.4,5.61444,52,6.17,60,6.36,75,6.69,90,6.86,110,7.39,120,7.5,135,7.2,150,6.77,179,6.30096
20,38.8,5.632986,52,6.19,60,6.39,75,6.84,90,7.28,110,7.75,120,8.21,135,8.25,150,7.61,178.1,6.993845

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.42	4.67	4.86	4.97	5	4.83	4.32	3.65
8	5.26	5.52	5.67	5.86	5.91	5.79	5.28	4.61
10	5.76	5.92	6.04	6.25	6.33	6.25	6.01	5.48
12	6.01	6.15	6.28	6.5	6.72	6.63	6.37	6.06
14	6.13	6.3	6.5	6.65	7.1	7.07	6.77	6.4
16	6.17	6.36	6.69	6.86	7.39	7.5	7.2	6.77
20	6.19	6.39	6.84	7.28	7.75	8.21	8.25	7.61

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	2.89	147.5°	3.16
8	42°	3.47	152°	4
10	41.2°	3.94	152.3°	4.76
12	39°	4.26	162.8°	5.45
14	38.4°	4.36	177.5°	5.96
16	38.4°	4.4	179°	6.3
20	38.8°	4.39	178.1°	6.99

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