YELLOW: ORC Rating

GPH

708

OSN

686.7

LOA

9.16 m

Displacement

3573 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5886

Medium

0.7865

High

0.8914

Triple Offshore

Low

0.7499

Medium

0.9532

High

1.0493

Boat Specifications

Dimensions

Length overall: 9.16 m
Beam: 3.01 m
Draft: 1.7 m
Displacement: 3573 kg
Crew weight: 440 kg
Wetted surface: 17.96 m²

Sails

Mainsail: 18.94 m²
Genoa: 28.85 m²
Spinnaker: 68.76 m²
Asymmetric spinnaker: 0 m²

Design

Type: Ziggurat 916
Builder: C.P.R.
Designer: A.Vallicelli & C.
Year built: 1977

Performance data

Polar CSV

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

6,42.5,4.24535,52,4.72,60,4.94,75,5.06,90,4.94,110,5.02,120,4.88,135,4.45,146.4,3.937947,150,3.78
8,40.8,4.953797,52,5.52,60,5.71,75,5.83,90,5.8,110,5.97,120,5.87,135,5.43,150,4.78,150.7,4.747329
10,39.2,5.381031,52,5.96,60,6.11,75,6.23,90,6.25,110,6.44,120,6.4,135,6.15,150,5.62,152.8,5.497987
12,38.5,5.609448,52,6.18,60,6.32,75,6.46,90,6.49,110,6.74,120,6.74,135,6.56,150,6.21,160.6,5.852277
14,38.1,5.705681,52,6.29,60,6.45,75,6.63,90,6.69,110,6.97,120,7.02,135,6.89,150,6.57,174.5,6.067936
16,37.9,5.753506,52,6.35,60,6.52,75,6.75,90,6.86,110,7.15,120,7.28,135,7.19,150,6.88,178.1,6.433537
20,38.4,5.805842,52,6.4,60,6.59,75,6.89,90,7.12,110,7.39,120,7.67,135,7.79,150,7.46,179,7.011068
24,39,5.751815,52,6.38,60,6.59,75,6.96,90,7.27,110,7.58,120,7.93,135,8.45,150,8.1,178.8,7.551656

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.72	4.94	5.06	4.94	5.02	4.88	4.45	3.78
8	5.52	5.71	5.83	5.8	5.97	5.87	5.43	4.78
10	5.96	6.11	6.23	6.25	6.44	6.4	6.15	5.62
12	6.18	6.32	6.46	6.49	6.74	6.74	6.56	6.21
14	6.29	6.45	6.63	6.69	6.97	7.02	6.89	6.57
16	6.35	6.52	6.75	6.86	7.15	7.28	7.19	6.88
20	6.4	6.59	6.89	7.12	7.39	7.67	7.79	7.46
24	6.38	6.59	6.96	7.27	7.58	7.93	8.45	8.1

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.5°	3.13	146.4°	3.28
8	40.8°	3.75	150.7°	4.14
10	39.2°	4.17	152.8°	4.89
12	38.5°	4.39	160.6°	5.52
14	38.1°	4.49	174.5°	6.04
16	37.9°	4.54	178.1°	6.43
20	38.4°	4.55	179°	7.01
24	39°	4.47	178.8°	7.55

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°	4.72	5.52	5.96	6.18	6.29	6.35	6.40	6.38
60°	4.94	5.71	6.11	6.32	6.45	6.52	6.59	6.59
75°	5.06	5.83	6.23	6.46	6.63	6.75	6.89	6.96
90°	4.94	5.80	6.25	6.49	6.69	6.86	7.12	7.27
110°	5.02	5.97	6.44	6.74	6.97	7.15	7.39	7.58
120°	4.88	5.87	6.40	6.74	7.02	7.28	7.67	7.93
135°	4.45	5.43	6.15	6.56	6.89	7.19	7.79	8.45
150°	3.78	4.78	5.62	6.21	6.57	6.88	7.46	8.10