Shiraz: ORC Rating

GPH

735.3

OSN

713.9

LOA

8.63 m

Displacement

3596 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5654

Medium

0.7558

High

0.8506

Triple Offshore

Low

0.7222

Medium

0.9189

High

1.0044

Boat Specifications

Dimensions

Length overall: 8.63 m
Beam: 2.86 m
Draft: 1.74 m
Displacement: 3596 kg
Crew weight: 432 kg
Wetted surface: 18.62 m²

Sails

Mainsail: 20.38 m²
Genoa: 26.34 m²
Spinnaker: 52.52 m²
Asymmetric spinnaker: 0 m²

Design

Type: CUMULUS
Builder: Albin Marin AB
Designer: PeterNorlin
Year built: 1982

Performance data

Polar CSV

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

6,42.6,4.12989,52,4.59,60,4.81,75,4.93,90,4.82,110,4.82,120,4.66,135,4.2,146.7,3.708989,150,3.58
8,40.5,4.800068,52,5.36,60,5.55,75,5.69,90,5.67,110,5.75,120,5.62,135,5.16,150,4.55,151.4,4.498948
10,39.3,5.220716,52,5.79,60,5.94,75,6.06,90,6.13,110,6.23,120,6.16,135,5.88,150,5.37,154.3,5.182687
12,39,5.417258,52,5.98,60,6.13,75,6.29,90,6.34,110,6.53,120,6.48,135,6.28,150,5.96,162.8,5.558589
14,38.8,5.479009,52,6.05,60,6.21,75,6.43,90,6.51,110,6.77,120,6.75,135,6.58,150,6.31,176.3,5.862219
16,38.8,5.517504,52,6.08,60,6.25,75,6.5,90,6.67,110,6.94,120,7.01,135,6.86,150,6.59,178.8,6.211362
20,39.2,5.53588,52,6.11,60,6.3,75,6.59,90,6.84,110,7.15,120,7.4,135,7.4,150,7.11,179,6.741027
24,40.6,5.505278,52,6.08,60,6.29,75,6.63,90,6.94,110,7.26,120,7.64,135,7.99,150,7.66,179,7.231101

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.59	4.81	4.93	4.82	4.82	4.66	4.2	3.58
8	5.36	5.55	5.69	5.67	5.75	5.62	5.16	4.55
10	5.79	5.94	6.06	6.13	6.23	6.16	5.88	5.37
12	5.98	6.13	6.29	6.34	6.53	6.48	6.28	5.96
14	6.05	6.21	6.43	6.51	6.77	6.75	6.58	6.31
16	6.08	6.25	6.5	6.67	6.94	7.01	6.86	6.59
20	6.11	6.3	6.59	6.84	7.15	7.4	7.4	7.11
24	6.08	6.29	6.63	6.94	7.26	7.64	7.99	7.66

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.04	146.7°	3.1
8	40.5°	3.65	151.4°	3.95
10	39.3°	4.04	154.3°	4.67
12	39°	4.21	162.8°	5.31
14	38.8°	4.27	176.3°	5.85
16	38.8°	4.3	178.8°	6.21
20	39.2°	4.29	179°	6.74
24	40.6°	4.18	179°	7.23

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 kt24 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)	Boat speed in 24 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	4.59	5.36	5.79	5.98	6.05	6.08	6.11	6.08
60°	4.81	5.55	5.94	6.13	6.21	6.25	6.30	6.29
75°	4.93	5.69	6.06	6.29	6.43	6.50	6.59	6.63
90°	4.82	5.67	6.13	6.34	6.51	6.67	6.84	6.94
110°	4.82	5.75	6.23	6.53	6.77	6.94	7.15	7.26
120°	4.66	5.62	6.16	6.48	6.75	7.01	7.40	7.64
135°	4.20	5.16	5.88	6.28	6.58	6.86	7.40	7.99
150°	3.58	4.55	5.37	5.96	6.31	6.59	7.11	7.66