K 28 — ORC Rating | RegattaPages

GPH

560.9

OSN

548.7

LOA

8.555 m

Displacement

1151 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7476

Medium

0.9461

High

1.1279

Triple Offshore

Low

0.9539

Medium

1.1853

High

1.3869

Boat Specifications

Dimensions

Length overall: 8.555 m
Beam: 2.52 m
Draft: 2.26 m
Displacement: 1151 kg
Crew weight: 450 kg
Wetted surface: 14.81 m²

Sails

Mainsail: 30.51 m²
Genoa: 19.43 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 92.39 m²

Design

Type: Keeler 28
Builder: Gieffe Yachts
Designer: MP-Design
Year built: 2008
Stability index: 87.2

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.

6,43,5.482983,52,6.11,60,6.39,75,6.55,90,6.5,110,6.54,120,6.42,135,5.76,142.6,5.2995,150,4.86
8,39.3,5.970225,52,6.71,60,6.94,75,7.22,90,7.19,110,7.47,120,7.47,135,6.96,147.8,6.275163,150,6.13
10,39.4,6.302302,52,6.97,60,7.3,75,7.92,90,8.09,110,8.11,120,8.44,135,8.06,150,6.95,152.3,6.821825
12,38.7,6.393908,52,7.12,60,7.51,75,8.26,90,8.93,110,8.72,120,9.18,135,9.5,143.8,8.624959,150,8.03
14,38.2,6.477006,52,7.26,60,7.66,75,8.48,90,9.34,110,9.5,120,9.89,135,10.72,144.2,9.937566,150,9.31
16,38.1,6.544378,52,7.44,60,7.94,75,8.76,90,9.62,110,10.68,120,10.59,135,11.68,141.8,11.99964,150,10.89
20,39,6.575341,52,7.52,60,8.09,75,9.26,90,10.32,110,11.68,120,12.53,135,13.74,148.2,14.966595,150,14.68

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.11	6.39	6.55	6.5	6.54	6.42	5.76	4.86
8	6.71	6.94	7.22	7.19	7.47	7.47	6.96	6.13
10	6.97	7.3	7.92	8.09	8.11	8.44	8.06	6.95
12	7.12	7.51	8.26	8.93	8.72	9.18	9.5	8.03
14	7.26	7.66	8.48	9.34	9.5	9.89	10.72	9.31
16	7.44	7.94	8.76	9.62	10.68	10.59	11.68	10.89
20	7.52	8.09	9.26	10.32	11.68	12.53	13.74	14.68

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	4.01	142.6°	4.21
8	39.3°	4.62	147.8°	5.31
10	39.4°	4.87	152.3°	6.04
12	38.7°	4.99	143.8°	6.96
14	38.2°	5.09	144.2°	8.06
16	38.1°	5.15	141.8°	9.43
20	39°	5.11	148.2°	12.72

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