RACYKALTRANT — ORC Rating

GPH

775

OSN

751.5

LOA

7.28 m

Displacement

1827 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5984

Medium

0.8099

High

0.92

Triple Offshore

Low

0.7648

Medium

0.9813

High

1.0906

Boat Specifications

Dimensions

Length overall: 7.28 m
Beam: 2.76 m
Draft: 1.52 m
Displacement: 1827 kg
Crew weight: 361 kg
Wetted surface: 14.16 m²

Sails

Mainsail: 12.16 m²
Genoa: 21.24 m²
Spinnaker: 41.24 m²
Asymmetric spinnaker: 0 m²

Design

Type: GK 24 * 1.52
Builder: Westerly Marine
Designer: Laurent Giles
Year built: 1976

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.

6,41.9,3.761866,52,4.23,60,4.45,75,4.61,90,4.55,110,4.57,120,4.43,135,4.03,148.7,3.546104,150,3.5
8,40.7,4.379171,52,4.99,60,5.22,75,5.35,90,5.37,110,5.46,120,5.36,135,4.95,150,4.37,152.8,4.261221
10,40.9,4.948049,52,5.43,60,5.57,75,5.69,90,5.79,110,5.87,120,5.81,135,5.61,150,5.15,153.3,5.025905
12,38.7,5.176631,52,5.66,60,5.78,75,5.9,90,6.04,110,6.18,120,6.13,135,5.93,150,5.66,172.6,5.163002
14,38.1,5.273625,52,5.78,60,5.92,75,6.08,90,6.19,110,6.51,120,6.48,135,6.25,150,5.96,180,5.6
16,37.8,5.290101,52,5.82,60,5.99,75,6.25,90,6.36,110,6.78,120,6.81,135,6.59,150,6.25,180,5.89
20,39,5.288582,52,5.82,60,6.01,75,6.41,90,6.71,110,7.07,120,7.32,135,7.24,150,6.87,180,6.46

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.23	4.45	4.61	4.55	4.57	4.43	4.03	3.5
8	4.99	5.22	5.35	5.37	5.46	5.36	4.95	4.37
10	5.43	5.57	5.69	5.79	5.87	5.81	5.61	5.15
12	5.66	5.78	5.9	6.04	6.18	6.13	5.93	5.66
14	5.78	5.92	6.08	6.19	6.51	6.48	6.25	5.96
16	5.82	5.99	6.25	6.36	6.78	6.81	6.59	6.25
20	5.82	6.01	6.41	6.71	7.07	7.32	7.24	6.87

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.9°	2.8	148.7°	3.03
8	40.7°	3.32	152.8°	3.79
10	40.9°	3.74	153.3°	4.49
12	38.7°	4.04	172.6°	5.12
14	38.1°	4.15	180°	5.6
16	37.8°	4.18	180°	5.89
20	39°	4.11	180°	6.46

Loading polar chart…