MERAK: ORC Rating

GPH

616.4

OSN

599.1

LOA

8.083 m

Displacement

1057 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.668

Medium

0.8774

High

1.0144

Triple Offshore

Low

0.8573

Medium

1.0896

High

1.2581

Boat Specifications

Dimensions

Length overall: 8.083 m
Beam: 2.69 m
Draft: 1.58 m
Displacement: 1057 kg
Crew weight: 420 kg
Wetted surface: 13.25 m²

Sails

Mainsail: 22.52 m²
Genoa: 17.1 m²
Spinnaker: 57.61 m²
Asymmetric spinnaker: 0 m²

Design

Type: Dolphin 81
Builder: Maxi Dolphin
Designer: Santarelli
Year built: 1992
Stability index: 92.8

Performance data

Polar CSV

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

6,43.5,4.838881,52,5.4,60,5.74,75,5.96,90,5.87,110,5.85,120,5.7,135,5.13,141.5,4.778892,150,4.32
8,41.4,5.732484,52,6.28,60,6.46,75,6.61,90,6.59,110,6.76,120,6.67,135,6.3,146,5.669224,150,5.42
10,38.7,6.022318,52,6.64,60,6.87,75,7.14,90,7.17,110,7.52,120,7.49,135,7,150,6.34,154.1,6.147465
12,37.6,6.096255,52,6.79,60,7.12,75,7.64,90,7.84,110,8.05,120,8.38,135,7.86,150,7.02,160.4,6.528264
14,37.5,6.151105,52,6.88,60,7.25,75,7.9,90,8.5,110,8.53,120,9.04,135,8.96,150,7.78,155,7.447801
16,37.5,6.176315,52,6.93,60,7.34,75,8.07,90,8.88,110,9.25,120,9.61,135,10.13,148.4,8.887825,150,8.74
20,38.2,6.247957,52,7.1,60,7.59,75,8.36,90,9.29,110,10.67,120,11.14,135,12.35,141.9,12.605869,150,11.45

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.4	5.74	5.96	5.87	5.85	5.7	5.13	4.32
8	6.28	6.46	6.61	6.59	6.76	6.67	6.3	5.42
10	6.64	6.87	7.14	7.17	7.52	7.49	7	6.34
12	6.79	7.12	7.64	7.84	8.05	8.38	7.86	7.02
14	6.88	7.25	7.9	8.5	8.53	9.04	8.96	7.78
16	6.93	7.34	8.07	8.88	9.25	9.61	10.13	8.74
20	7.1	7.59	8.36	9.29	10.67	11.14	12.35	11.45

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	3.51	141.5°	3.74
8	41.4°	4.3	146°	4.7
10	38.7°	4.7	154.1°	5.53
12	37.6°	4.83	160.4°	6.15
14	37.5°	4.88	155°	6.75
16	37.5°	4.9	148.4°	7.57
20	38.2°	4.91	141.9°	9.92

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°	5.40	6.28	6.64	6.79	6.88	6.93	7.10
60°	5.74	6.46	6.87	7.12	7.25	7.34	7.59
75°	5.96	6.61	7.14	7.64	7.90	8.07	8.36
90°	5.87	6.59	7.17	7.84	8.50	8.88	9.29
110°	5.85	6.76	7.52	8.05	8.53	9.25	10.67
120°	5.70	6.67	7.49	8.38	9.04	9.61	11.14
135°	5.13	6.30	7.00	7.86	8.96	10.13	12.35
150°	4.32	5.42	6.34	7.02	7.78	8.74	11.45