Najaden: ORC Rating

GPH

688.4

OSN

670.5

LOA

10.5 m

Displacement

4693 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5949

Medium

0.7991

High

0.9131

Triple Offshore

Low

0.7673

Medium

0.9826

High

1.086

Boat Specifications

Dimensions

Length overall: 10.5 m
Beam: 2.7 m
Draft: 1.79 m
Displacement: 4693 kg
Crew weight: 533 kg
Wetted surface: 22.12 m²

Sails

Mainsail: 32.91 m²
Genoa: 20.07 m²
Spinnaker: 60.29 m²
Asymmetric spinnaker: 0 m²

Design

Type: Rhapsody 34
Builder: Dahlstrøm båt
Designer: Göran Dahlström
Year built: 1976

Performance data

Polar CSV

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

6,42,4.21183,52,4.75,60,5.01,75,5.19,90,5.26,110,5.26,120,5.07,135,4.57,146,4.04083,150,3.87
8,40.5,4.944727,52,5.59,60,5.88,75,6.09,90,6.25,110,6.31,120,6.16,135,5.59,150,4.87,151,4.824954
10,40.5,5.510215,52,6.18,60,6.38,75,6.53,90,6.69,110,6.78,120,6.71,135,6.4,150,5.75,152,5.651525
12,40.5,5.799534,52,6.42,60,6.6,75,6.77,90,6.84,110,7.08,120,7.03,135,6.81,150,6.44,160,6.065813
14,40.5,5.931042,52,6.51,60,6.71,75,6.92,90,7.03,110,7.33,120,7.34,135,7.12,150,6.81,180,6.33
16,40.1,5.948324,52,6.56,60,6.76,75,7.04,90,7.21,110,7.49,120,7.66,135,7.45,150,7.1,180,6.73
20,39.9,6.061276,52,6.63,60,6.81,75,7.13,90,7.49,110,7.75,120,8.05,135,8.17,150,7.76,180,7.31

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.75	5.01	5.19	5.26	5.26	5.07	4.57	3.87
8	5.59	5.88	6.09	6.25	6.31	6.16	5.59	4.87
10	6.18	6.38	6.53	6.69	6.78	6.71	6.4	5.75
12	6.42	6.6	6.77	6.84	7.08	7.03	6.81	6.44
14	6.51	6.71	6.92	7.03	7.33	7.34	7.12	6.81
16	6.56	6.76	7.04	7.21	7.49	7.66	7.45	7.1
20	6.63	6.81	7.13	7.49	7.75	8.05	8.17	7.76

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.13	146°	3.35
8	40.5°	3.76	151°	4.22
10	40.5°	4.19	152°	4.99
12	40.5°	4.41	160°	5.7
14	40.5°	4.51	180°	6.33
16	40.1°	4.55	180°	6.73
20	39.9°	4.65	180°	7.31

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°	4.75	5.59	6.18	6.42	6.51	6.56	6.63
60°	5.01	5.88	6.38	6.60	6.71	6.76	6.81
75°	5.19	6.09	6.53	6.77	6.92	7.04	7.13
90°	5.26	6.25	6.69	6.84	7.03	7.21	7.49
110°	5.26	6.31	6.78	7.08	7.33	7.49	7.75
120°	5.07	6.16	6.71	7.03	7.34	7.66	8.05
135°	4.57	5.59	6.40	6.81	7.12	7.45	8.17
150°	3.87	4.87	5.75	6.44	6.81	7.10	7.76