Spotgaai — ORC Rating

GPH

812

OSN

788.4

LOA

7.87 m

Displacement

2089 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5624

Medium

0.7644

High

0.868

Triple Offshore

Low

0.7239

Medium

0.941

High

1.0419

Boat Specifications

Dimensions

Length overall: 7.87 m
Beam: 2.2 m
Draft: 1.17 m
Displacement: 2089 kg
Crew weight: 340 kg
Wetted surface: 15.4 m²

Sails

Mainsail: 17.05 m²
Genoa: 14.89 m²
Spinnaker: 31.3 m²
Asymmetric spinnaker: 0 m²

Design

Type: IF
Builder: Marieholm
Designer: Tord Sunden
Year built: 1974

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.

6,43.9,3.566714,52,3.95,60,4.19,75,4.35,90,4.38,110,4.4,120,4.25,135,3.84,149.6,3.350672,150,3.34
8,42.7,4.190963,52,4.68,60,4.96,75,5.15,90,5.28,110,5.31,120,5.17,135,4.71,150,4.19,154.5,4.043939
10,42.1,4.69018,52,5.23,60,5.43,75,5.57,90,5.74,110,5.77,120,5.69,135,5.43,150,4.95,157.8,4.665879
12,42.1,5.01364,52,5.5,60,5.66,75,5.8,90,5.97,110,6.06,120,5.99,135,5.81,150,5.53,173.1,5.016332
14,41.9,5.105389,52,5.59,60,5.78,75,5.97,90,6.07,110,6.35,120,6.28,135,6.08,150,5.85,180,5.5
16,42.2,5.170054,52,5.64,60,5.83,75,6.09,90,6.23,110,6.58,120,6.59,135,6.37,150,6.1,180,5.82
20,42.7,5.143455,52,5.62,60,5.84,75,6.17,90,6.52,110,6.82,120,7.07,135,6.98,150,6.67,180,6.33

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	3.95	4.19	4.35	4.38	4.4	4.25	3.84	3.34
8	4.68	4.96	5.15	5.28	5.31	5.17	4.71	4.19
10	5.23	5.43	5.57	5.74	5.77	5.69	5.43	4.95
12	5.5	5.66	5.8	5.97	6.06	5.99	5.81	5.53
14	5.59	5.78	5.97	6.07	6.35	6.28	6.08	5.85
16	5.64	5.83	6.09	6.23	6.58	6.59	6.37	6.1
20	5.62	5.84	6.17	6.52	6.82	7.07	6.98	6.67

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.9°	2.57	149.6°	2.89
8	42.7°	3.08	154.5°	3.65
10	42.1°	3.48	157.8°	4.32
12	42.1°	3.72	173.1°	4.98
14	41.9°	3.8	180°	5.5
16	42.2°	3.83	180°	5.82
20	42.7°	3.78	180°	6.33

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