IONIA — ORC Rating | RegattaPages

GPH

784.4

OSN

757.9

LOA

8.344 m

Displacement

3093 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5662

Medium

0.7853

High

0.9282

Triple Offshore

Low

0.7314

Medium

0.9804

High

1.1161

Boat Specifications

Dimensions

Length overall: 8.344 m
Beam: 2.45 m
Draft: 1.31 m
Displacement: 3093 kg
Crew weight: 400 kg
Wetted surface: 17.47 m²

Sails

Mainsail: 13.42 m²
Genoa: 22.71 m²
Spinnaker: 47.01 m²
Asymmetric spinnaker: 0 m²

Design

Type: ONE-OFF
Builder: CUSTOM MADE
Year built: 1978

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.

6,44.8,3.565536,52,3.94,60,4.19,75,4.4,90,4.37,110,4.5,120,4.38,135,3.94,147.9,3.482379,150,3.4
8,43.2,4.225148,52,4.7,60,4.97,75,5.21,90,5.31,110,5.49,120,5.36,135,4.91,150,4.33,151.6,4.263066
10,43.1,4.766064,52,5.31,60,5.62,75,5.85,90,6.03,110,6.15,120,6.08,135,5.78,150,5.14,152.2,5.041935
12,43.3,5.248891,52,5.78,60,6.01,75,6.18,90,6.34,110,6.47,120,6.43,135,6.24,150,5.86,157.2,5.575665
14,43,5.537676,52,6.01,60,6.2,75,6.37,90,6.49,110,6.74,120,6.71,135,6.53,150,6.26,176.9,5.738397
16,42.3,5.597385,52,6.1,60,6.3,75,6.51,90,6.6,110,7,120,7.01,135,6.81,150,6.52,180,6.16
20,42.6,5.610673,52,6.13,60,6.34,75,6.66,90,6.91,110,7.31,120,7.58,135,7.44,150,7.06,180,6.67

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	3.94	4.19	4.4	4.37	4.5	4.38	3.94	3.4
8	4.7	4.97	5.21	5.31	5.49	5.36	4.91	4.33
10	5.31	5.62	5.85	6.03	6.15	6.08	5.78	5.14
12	5.78	6.01	6.18	6.34	6.47	6.43	6.24	5.86
14	6.01	6.2	6.37	6.49	6.74	6.71	6.53	6.26
16	6.1	6.3	6.51	6.6	7	7.01	6.81	6.52
20	6.13	6.34	6.66	6.91	7.31	7.58	7.44	7.06

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.8°	2.53	147.9°	2.95
8	43.2°	3.08	151.6°	3.75
10	43.1°	3.48	152.2°	4.46
12	43.3°	3.82	157.2°	5.14
14	43°	4.05	176.9°	5.73
16	42.3°	4.14	180°	6.16
20	42.6°	4.13	180°	6.67

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