DONNA — ORC Rating | RegattaPages

GPH

680.4

OSN

663.8

LOA

9.447 m

Displacement

4470 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6196

Medium

0.812

High

0.9144

Triple Offshore

Low

0.7925

Medium

0.9855

High

1.0778

Boat Specifications

Dimensions

Length overall: 9.447 m
Beam: 3.02 m
Draft: 1.64 m
Displacement: 4470 kg
Crew weight: 450 kg
Wetted surface: 20.49 m²

Sails

Mainsail: 32.93 m²
Genoa: 30.49 m²
Spinnaker: 62.01 m²
Asymmetric spinnaker: 0 m²

Design

Type: INFERNO 31
Builder: FINNGULF MARIN
Designer: H.SÖDERGREN
Year built: 1985
Stability index: 124.9

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.

6,42.6,4.618956,52,5.13,60,5.37,75,5.52,90,5.43,110,5.26,120,5.09,135,4.59,146,4.052892,150,3.88
8,40.6,5.29455,52,5.88,60,6.07,75,6.19,90,6.17,110,6.18,120,6.05,135,5.58,150,4.91,151.6,4.831475
10,39.9,5.683261,52,6.25,60,6.4,75,6.52,90,6.54,110,6.64,120,6.58,135,6.29,150,5.76,155,5.538957
12,39.4,5.823482,52,6.4,60,6.56,75,6.72,90,6.78,110,6.94,120,6.9,135,6.69,150,6.35,164.6,5.901906
14,39,5.906226,52,6.49,60,6.65,75,6.86,90,6.97,110,7.19,120,7.18,135,7.01,150,6.72,177.2,6.247459
16,38.8,5.953771,52,6.54,60,6.71,75,6.95,90,7.12,110,7.41,120,7.45,135,7.31,150,7.02,179,6.621008
20,39,5.9963,52,6.58,60,6.77,75,7.07,90,7.35,110,7.7,120,8,135,7.96,150,7.61,179,7.201097

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.13	5.37	5.52	5.43	5.26	5.09	4.59	3.88
8	5.88	6.07	6.19	6.17	6.18	6.05	5.58	4.91
10	6.25	6.4	6.52	6.54	6.64	6.58	6.29	5.76
12	6.4	6.56	6.72	6.78	6.94	6.9	6.69	6.35
14	6.49	6.65	6.86	6.97	7.19	7.18	7.01	6.72
16	6.54	6.71	6.95	7.12	7.41	7.45	7.31	7.02
20	6.58	6.77	7.07	7.35	7.7	8	7.96	7.61

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.4	146°	3.36
8	40.6°	4.02	151.6°	4.25
10	39.9°	4.36	155°	5.02
12	39.4°	4.5	164.6°	5.69
14	39°	4.59	177.2°	6.24
16	38.8°	4.64	179°	6.62
20	39°	4.66	179°	7.2

Loading polar chart…