DIOMEDEA: ORC Rating

GPH

613.7

OSN

597.4

LOA

11.785 m

Displacement

8284 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7407

Medium

1.0011

High

1.1532

Triple Offshore

Low

0.9592

Medium

1.2429

High

1.3874

Boat Specifications

Dimensions

Length overall: 11.785 m
Beam: 3.79 m
Draft: 1.98 m
Displacement: 8284 kg
Crew weight: 600 kg
Wetted surface: 33.83 m²

Sails

Mainsail: 49.6 m²
Genoa: 40.08 m²
Spinnaker: 104.86 m²
Asymmetric spinnaker: 98.3 m²

Design

Type: DEHLER 39 SQ L.E.
Builder: DEHLER
Designer: JUDEL-VROLIJK
Year built: 1995

Performance data

Polar CSV

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

6,43.5,4.797523,52,5.34,60,5.66,75,5.92,90,5.89,110,5.76,120,5.58,135,5.03,144.6,4.526898,150,4.26
8,42,5.638201,52,6.34,60,6.68,75,6.95,90,6.93,110,6.97,120,6.77,135,6.18,149.4,5.402316,150,5.37
10,41.9,6.31456,52,7.03,60,7.29,75,7.48,90,7.55,110,7.63,120,7.52,135,7.13,150,6.33,151.4,6.252969
12,41.5,6.675962,52,7.34,60,7.56,75,7.75,90,7.85,110,8,120,7.93,135,7.66,150,7.15,155.3,6.87941
14,40.9,6.7738,52,7.45,60,7.68,75,7.94,90,8.06,110,8.34,120,8.3,135,8.02,150,7.65,170.7,6.991904
16,40.8,6.829635,52,7.5,60,7.74,75,8.07,90,8.3,110,8.66,120,8.71,135,8.41,150,7.99,180,7.46
20,40.5,6.904207,52,7.56,60,7.78,75,8.18,90,8.67,110,9.05,120,9.44,135,9.3,150,8.74,180,8.16

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.34	5.66	5.92	5.89	5.76	5.58	5.03	4.26
8	6.34	6.68	6.95	6.93	6.97	6.77	6.18	5.37
10	7.03	7.29	7.48	7.55	7.63	7.52	7.13	6.33
12	7.34	7.56	7.75	7.85	8	7.93	7.66	7.15
14	7.45	7.68	7.94	8.06	8.34	8.3	8.02	7.65
16	7.5	7.74	8.07	8.3	8.66	8.71	8.41	7.99
20	7.56	7.78	8.18	8.67	9.05	9.44	9.3	8.74

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	3.48	144.6°	3.69
8	42°	4.19	149.4°	4.65
10	41.9°	4.7	151.4°	5.49
12	41.5°	5	155.3°	6.25
14	40.9°	5.12	170.7°	6.9
16	40.8°	5.17	180°	7.46
20	40.5°	5.25	180°	8.16

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°	5.34	6.34	7.03	7.34	7.45	7.50	7.56
60°	5.66	6.68	7.29	7.56	7.68	7.74	7.78
75°	5.92	6.95	7.48	7.75	7.94	8.07	8.18
90°	5.89	6.93	7.55	7.85	8.06	8.30	8.67
110°	5.76	6.97	7.63	8.00	8.34	8.66	9.05
120°	5.58	6.77	7.52	7.93	8.30	8.71	9.44
135°	5.03	6.18	7.13	7.66	8.02	8.41	9.30
150°	4.26	5.37	6.33	7.15	7.65	7.99	8.74