DON IGNAZIO — ORC Rating

GPH

623.1

OSN

606.3

LOA

9.77 m

Displacement

3158 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.743

Medium

0.9931

High

1.1252

Triple Offshore

Low

0.957

Medium

1.2173

High

1.3624

Boat Specifications

Dimensions

Length overall: 9.77 m
Beam: 3.13 m
Draft: 1.88 m
Displacement: 3158 kg
Crew weight: 545 kg
Wetted surface: 20.56 m²

Sails

Mainsail: 36.87 m²
Genoa: 24.02 m²
Spinnaker: 64.82 m²
Asymmetric spinnaker: 0 m²

Design

Type: MARTINOLI 31
Builder: AST. MARTINOLI
Designer: E. MARTINOLI
Year built: 2001

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.

6,42.4,4.807332,52,5.38,60,5.66,75,5.89,90,5.83,110,5.71,120,5.54,135,4.99,144.6,4.453289,150,4.19
8,41.2,5.701641,52,6.38,60,6.6,75,6.75,90,6.74,110,6.8,120,6.66,135,6.16,148.9,5.348798,150,5.29
10,39.7,6.186643,52,6.82,60,6.99,75,7.14,90,7.19,110,7.32,120,7.22,135,6.9,150,6.26,151.6,6.17292
12,38.7,6.329841,52,6.99,60,7.19,75,7.43,90,7.52,110,7.82,120,7.75,135,7.36,150,6.93,159.5,6.565798
14,38.4,6.392806,52,7.06,60,7.28,75,7.68,90,7.9,110,8.26,120,8.34,135,7.88,150,7.36,180,6.77
16,38.1,6.417302,52,7.09,60,7.34,75,7.82,90,8.24,110,8.57,120,8.95,135,8.49,150,7.83,180,7.2
20,39.1,6.533114,52,7.19,60,7.46,75,7.94,90,8.66,110,9.13,120,9.75,135,10.07,150,9.02,180,8.11

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.38	5.66	5.89	5.83	5.71	5.54	4.99	4.19
8	6.38	6.6	6.75	6.74	6.8	6.66	6.16	5.29
10	6.82	6.99	7.14	7.19	7.32	7.22	6.9	6.26
12	6.99	7.19	7.43	7.52	7.82	7.75	7.36	6.93
14	7.06	7.28	7.68	7.9	8.26	8.34	7.88	7.36
16	7.09	7.34	7.82	8.24	8.57	8.95	8.49	7.83
20	7.19	7.46	7.94	8.66	9.13	9.75	10.07	9.02

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.55	144.6°	3.63
8	41.2°	4.29	148.9°	4.58
10	39.7°	4.76	151.6°	5.43
12	38.7°	4.94	159.5°	6.15
14	38.4°	5.01	180°	6.77
16	38.1°	5.05	180°	7.2
20	39.1°	5.07	180°	8.11

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