Julia: ORC Rating

GPH

775.6

OSN

751.7

LOA

7.8 m

Displacement

2383 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.595

Medium

0.8049

High

0.9243

Triple Offshore

Low

0.76

Medium

0.9824

High

1.0974

Boat Specifications

Dimensions

Length overall: 7.8 m
Beam: 2.76 m
Draft: 1.48 m
Displacement: 2383 kg
Crew weight: 354 kg
Wetted surface: 14.21 m²

Sails

Mainsail: 14.48 m²
Genoa: 19.75 m²
Spinnaker: 38.82 m²
Asymmetric spinnaker: 0 m²

Design

Type: ALBIN 78 CIRRUS
Builder: Albin Marin AB
Designer: Peter Norlin
Year built: 1978

Performance data

Polar CSV

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

6,42,3.740859,52,4.18,60,4.38,75,4.54,90,4.5,110,4.56,120,4.42,135,4.01,148.9,3.515258,150,3.47
8,40.8,4.359342,52,4.91,60,5.15,75,5.33,90,5.42,110,5.47,120,5.35,135,4.89,150,4.34,153.4,4.216275
10,41.4,4.932603,52,5.45,60,5.61,75,5.73,90,5.89,110,5.92,120,5.85,135,5.61,150,5.11,155.2,4.891066
12,40.1,5.242369,52,5.72,60,5.85,75,5.97,90,6.16,110,6.23,120,6.15,135,5.96,150,5.68,171.2,5.16075
14,39.4,5.357603,52,5.85,60,6,75,6.16,90,6.36,110,6.54,120,6.45,135,6.24,150,5.99,180,5.62
16,39.2,5.406839,52,5.92,60,6.1,75,6.32,90,6.45,110,6.81,120,6.77,135,6.54,150,6.25,180,5.94
20,40.1,5.438467,52,5.94,60,6.15,75,6.52,90,6.75,110,7.15,120,7.28,135,7.13,150,6.81,180,6.46

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.18	4.38	4.54	4.5	4.56	4.42	4.01	3.47
8	4.91	5.15	5.33	5.42	5.47	5.35	4.89	4.34
10	5.45	5.61	5.73	5.89	5.92	5.85	5.61	5.11
12	5.72	5.85	5.97	6.16	6.23	6.15	5.96	5.68
14	5.85	6	6.16	6.36	6.54	6.45	6.24	5.99
16	5.92	6.1	6.32	6.45	6.81	6.77	6.54	6.25
20	5.94	6.15	6.52	6.75	7.15	7.28	7.13	6.81

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	2.78	148.9°	3.01
8	40.8°	3.3	153.4°	3.77
10	41.4°	3.7	155.2°	4.44
12	40.1°	4.01	171.2°	5.1
14	39.4°	4.14	180°	5.62
16	39.2°	4.19	180°	5.94
20	40.1°	4.16	180°	6.46

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°	4.18	4.91	5.45	5.72	5.85	5.92	5.94
60°	4.38	5.15	5.61	5.85	6.00	6.10	6.15
75°	4.54	5.33	5.73	5.97	6.16	6.32	6.52
90°	4.50	5.42	5.89	6.16	6.36	6.45	6.75
110°	4.56	5.47	5.92	6.23	6.54	6.81	7.15
120°	4.42	5.35	5.85	6.15	6.45	6.77	7.28
135°	4.01	4.89	5.61	5.96	6.24	6.54	7.13
150°	3.47	4.34	5.11	5.68	5.99	6.25	6.81