SCHRAT II — ORC Rating

GPH

648.5

OSN

632.4

LOA

11.16 m

Displacement

4155 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.635

Medium

0.8466

High

0.9491

Triple Offshore

Low

0.8213

Medium

1.0412

High

1.1386

Boat Specifications

Dimensions

Length overall: 11.16 m
Beam: 2.73 m
Draft: 1.8 m
Displacement: 4155 kg
Crew weight: 360 kg
Wetted surface: 21.67 m²

Sails

Mainsail: 29.02 m²
Genoa: 30.82 m²
Spinnaker: 82.47 m²
Asymmetric spinnaker: 0 m²

Design

Type: LUFFE 37
Builder: JOERGENSEN
Designer: JOERGENSEN
Year built: 1980
Stability index: 122.7

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.

6,43,4.63524,52,5.16,60,5.44,75,5.66,90,5.59,110,5.58,120,5.43,135,4.88,144.2,4.31532,150,4.04
8,41.2,5.42254,52,6.11,60,6.38,75,6.56,90,6.53,110,6.68,120,6.58,135,6.05,149.6,5.159339,150,5.14
10,41.2,5.927581,52,6.58,60,6.79,75,6.96,90,6.98,110,7.16,120,7.13,135,6.87,148.7,6.24957,150,6.17
12,40.6,6.084781,52,6.73,60,6.94,75,7.17,90,7.26,110,7.42,120,7.52,135,7.31,150,6.9,157.4,6.618211
14,40.5,6.154607,52,6.79,60,7.01,75,7.3,90,7.48,110,7.62,120,7.88,135,7.73,150,7.31,171.8,6.749
16,40.9,6.191676,52,6.82,60,7.04,75,7.37,90,7.67,110,7.81,120,8.13,135,8.22,150,7.71,177.2,7.118499
20,41.2,6.246554,52,6.87,60,7.08,75,7.41,90,7.89,110,8.15,120,8.57,135,9.31,150,8.7,177.2,7.879407

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.16	5.44	5.66	5.59	5.58	5.43	4.88	4.04
8	6.11	6.38	6.56	6.53	6.68	6.58	6.05	5.14
10	6.58	6.79	6.96	6.98	7.16	7.13	6.87	6.17
12	6.73	6.94	7.17	7.26	7.42	7.52	7.31	6.9
14	6.79	7.01	7.3	7.48	7.62	7.88	7.73	7.31
16	6.82	7.04	7.37	7.67	7.81	8.13	8.22	7.71
20	6.87	7.08	7.41	7.89	8.15	8.57	9.31	8.7

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.39	144.2°	3.5
8	41.2°	4.08	149.6°	4.45
10	41.2°	4.46	148.7°	5.34
12	40.6°	4.62	157.4°	6.11
14	40.5°	4.68	171.8°	6.68
16	40.9°	4.68	177.2°	7.11
20	41.2°	4.7	177.2°	7.87

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