TROPICANA — ORC Rating

GPH

714.7

OSN

692.4

LOA

9.12 m

Displacement

2925 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5683

Medium

0.7747

High

0.9041

Triple Offshore

Low

0.7281

Medium

0.9489

High

1.0729

Boat Specifications

Dimensions

Length overall: 9.12 m
Beam: 3.25 m
Draft: 1.79 m
Displacement: 2925 kg
Crew weight: 400 kg
Wetted surface: 17.38 m²

Sails

Mainsail: 17.92 m²
Genoa: 23.06 m²
Spinnaker: 57.03 m²
Asymmetric spinnaker: 0 m²

Design

Type: Duck 31
Builder: Avallone
Designer: Paperini
Year built: 1982

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.

6,42.4,4.008367,52,4.48,60,4.7,75,4.85,90,4.86,110,4.95,120,4.81,135,4.38,148,3.844122,150,3.76
8,41.2,4.69156,52,5.29,60,5.55,75,5.73,90,5.86,110,5.97,120,5.84,135,5.35,150,4.7,151,4.664885
10,41.2,5.302925,52,5.87,60,6.05,75,6.19,90,6.39,110,6.48,120,6.41,135,6.12,150,5.54,152,5.447662
12,39.4,5.642307,52,6.19,60,6.33,75,6.46,90,6.7,110,6.85,120,6.78,135,6.53,150,6.17,161,5.785185
14,38.2,5.815308,52,6.37,60,6.52,75,6.69,90,6.88,110,7.2,120,7.15,135,6.89,150,6.54,180,6.05
16,37.9,5.892908,52,6.47,60,6.66,75,6.89,90,7.01,110,7.5,120,7.49,135,7.25,150,6.87,180,6.44
20,38.2,5.904383,52,6.52,60,6.76,75,7.16,90,7.38,110,7.82,120,8.08,135,7.94,150,7.53,180,7.07

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.48	4.7	4.85	4.86	4.95	4.81	4.38	3.76
8	5.29	5.55	5.73	5.86	5.97	5.84	5.35	4.7
10	5.87	6.05	6.19	6.39	6.48	6.41	6.12	5.54
12	6.19	6.33	6.46	6.7	6.85	6.78	6.53	6.17
14	6.37	6.52	6.69	6.88	7.2	7.15	6.89	6.54
16	6.47	6.66	6.89	7.01	7.5	7.49	7.25	6.87
20	6.52	6.76	7.16	7.38	7.82	8.08	7.94	7.53

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	2.96	148°	3.26
8	41.2°	3.53	151°	4.08
10	41.2°	3.99	152°	4.81
12	39.4°	4.36	161°	5.47
14	38.2°	4.57	180°	6.05
16	37.9°	4.65	180°	6.44
20	38.2°	4.64	180°	7.07

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