RS21-154: ORC Rating

GPH

679.3

OSN

657.8

LOA

6.38 m

Displacement

660 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5913

Medium

0.7897

High

0.9418

Triple Offshore

Low

0.7624

Medium

0.9909

High

1.1979

Boat Specifications

Dimensions

Length overall: 6.38 m
Beam: 2.2 m
Draft: 1.38 m
Displacement: 660 kg
Crew weight: 325 kg
Wetted surface: 9.75 m²

Sails

Mainsail: 16.09 m²
Genoa: 8.12 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 39.99 m²

Design

Type: RS 21
Builder: RS SAILING
Designer: RICHARDS
Year built: 2018
Stability index: 122.8

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,44.2,4.114878,52,4.55,60,4.83,75,5.05,90,5.4,110,5.45,120,5.3,135,4.76,144.2,4.31532,150,4.04
8,43.5,4.97674,52,5.46,60,5.67,75,5.82,90,6.13,110,6.21,120,6.1,135,5.77,147.8,5.235211,150,5.11
10,40.8,5.402941,52,5.88,60,6.04,75,6.29,90,6.8,110,6.98,120,6.83,135,6.4,150,5.83,150.5,5.802225
12,38.4,5.61444,52,6.2,60,6.43,75,6.67,90,7.28,110,7.93,120,7.76,135,7.12,147.8,6.48788,150,6.33
14,37.2,5.749941,52,6.53,60,6.86,75,7.22,90,7.63,110,8.8,120,8.92,135,8.05,144.8,7.367114,150,6.95
16,37.2,5.800159,52,6.75,60,7.21,75,7.87,90,8.02,110,9.42,120,10.22,135,9.19,143.4,8.382976,150,7.77
20,38.4,5.869642,52,6.84,60,7.44,75,8.73,90,9.98,110,10.65,120,12.02,135,13.39,137.2,13.029318,150,11.04

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.55	4.83	5.05	5.4	5.45	5.3	4.76	4.04
8	5.46	5.67	5.82	6.13	6.21	6.1	5.77	5.11
10	5.88	6.04	6.29	6.8	6.98	6.83	6.4	5.83
12	6.2	6.43	6.67	7.28	7.93	7.76	7.12	6.33
14	6.53	6.86	7.22	7.63	8.8	8.92	8.05	6.95
16	6.75	7.21	7.87	8.02	9.42	10.22	9.19	7.77
20	6.84	7.44	8.73	9.98	10.65	12.02	13.39	11.04

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.2°	2.95	144.2°	3.5
8	43.5°	3.61	147.8°	4.43
10	40.8°	4.09	150.5°	5.05
12	38.4°	4.4	147.8°	5.49
14	37.2°	4.58	144.8°	6.02
16	37.2°	4.62	143.4°	6.73
20	38.4°	4.6	137.2°	9.56

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	4.55	5.46	5.88	6.20	6.53	6.75	6.84
60°	4.83	5.67	6.04	6.43	6.86	7.21	7.44
75°	5.05	5.82	6.29	6.67	7.22	7.87	8.73
90°	5.40	6.13	6.80	7.28	7.63	8.02	9.98
110°	5.45	6.21	6.98	7.93	8.80	9.42	10.65
120°	5.30	6.10	6.83	7.76	8.92	10.22	12.02
135°	4.76	5.77	6.40	7.12	8.05	9.19	13.39
150°	4.04	5.11	5.83	6.33	6.95	7.77	11.04