Ballista — ORC Rating

GPH

595.5

OSN

579.3

LOA

10.59 m

Displacement

4300 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7764

Medium

1.0369

High

1.1693

Triple Offshore

Low

1.0003

Medium

1.2745

High

1.4216

Boat Specifications

Dimensions

Length overall: 10.59 m
Beam: 3.59 m
Draft: 2.14 m
Displacement: 4300 kg
Crew weight: 612 kg
Wetted surface: 24.04 m²

Sails

Mainsail: 37.14 m²
Genoa: 28.53 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 110.31 m²

Design

Type: A-35
Builder: ARCHAMBAULT
Designer: NIVELT Bernard
Year built: 2005

Velocity Prediction

Polar CSV

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

6,42.3,4.853771,52,5.45,60,5.76,75,6.01,90,6.06,110,6.16,120,6,135,5.39,143.8,4.88252,150,4.55
8,40.9,5.741854,52,6.47,60,6.73,75,6.93,90,7.13,110,7.22,120,7.12,135,6.63,146.8,5.879792,150,5.69
10,39.5,6.402077,52,7.08,60,7.25,75,7.38,90,7.49,110,7.76,120,7.68,135,7.36,149.3,6.722085,150,6.68
12,38,6.662346,52,7.35,60,7.52,75,7.7,90,7.72,110,8.2,120,8.23,135,7.86,150,7.29,150.9,7.233006
14,37.3,6.750696,52,7.45,60,7.67,75,7.98,90,8.07,110,8.51,120,8.82,135,8.41,150,7.66,173.7,6.690404
16,37.2,6.791961,52,7.51,60,7.75,75,8.19,90,8.43,110,8.78,120,9.24,135,9.03,150,8.02,176.9,7.210551
20,36.8,6.881209,52,7.6,60,7.82,75,8.36,90,9.02,110,9.39,120,9.98,135,10.81,150,9.16,177.1,7.970207

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.45	5.76	6.01	6.06	6.16	6	5.39	4.55
8	6.47	6.73	6.93	7.13	7.22	7.12	6.63	5.69
10	7.08	7.25	7.38	7.49	7.76	7.68	7.36	6.68
12	7.35	7.52	7.7	7.72	8.2	8.23	7.86	7.29
14	7.45	7.67	7.98	8.07	8.51	8.82	8.41	7.66
16	7.51	7.75	8.19	8.43	8.78	9.24	9.03	8.02
20	7.6	7.82	8.36	9.02	9.39	9.98	10.81	9.16

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	3.59	143.8°	3.94
8	40.9°	4.34	146.8°	4.92
10	39.5°	4.94	149.3°	5.78
12	38°	5.25	150.9°	6.32
14	37.3°	5.37	173.7°	6.65
16	37.2°	5.41	176.9°	7.2
20	36.8°	5.51	177.1°	7.96

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