DIRTY DEEDS — ORC Rating

GPH

604.4

OSN

587.2

LOA

8.7 m

Displacement

1949 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6954

Medium

0.9044

High

1.0341

Triple Offshore

Low

0.885

Medium

1.1078

High

1.2598

Boat Specifications

Dimensions

Length overall: 8.7 m
Beam: 2.98 m
Draft: 2.03 m
Displacement: 1949 kg
Crew weight: 465 kg
Wetted surface: 17.03 m²

Sails

Mainsail: 28.6 m²
Genoa: 20.55 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 83.78 m²

Design

Type: Delta 87
Builder: Baruffaldi
Designer: Peracca
Year built: 1997
Stability index: 105.7

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.

6,41.8,4.976686,52,5.57,60,5.82,75,5.97,90,5.94,110,6.03,120,5.88,135,5.27,143.3,4.814314,150,4.45
8,39.4,5.784659,52,6.42,60,6.58,75,6.68,90,6.79,110,6.93,120,6.84,135,6.44,146.9,5.789533,150,5.6
10,36.9,6.177435,52,6.84,60,6.99,75,7.13,90,7.15,110,7.55,120,7.51,135,7.13,150,6.48,150.1,6.482894
12,35.8,6.312697,52,7.04,60,7.26,75,7.53,90,7.56,110,8.03,120,8.18,135,7.79,149.6,7.09554,150,7.06
14,35.4,6.379368,52,7.15,60,7.41,75,7.81,90,8.01,110,8.42,120,8.85,135,8.57,147.3,7.78362,150,7.56
16,35.4,6.42844,52,7.22,60,7.5,75,7.99,90,8.42,110,8.81,120,9.39,135,9.51,144.3,8.779885,150,8.23
20,36,6.476996,52,7.29,60,7.61,75,8.21,90,8.96,110,9.58,120,10.54,135,12.35,140.8,11.987955,150,10.73

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.57	5.82	5.97	5.94	6.03	5.88	5.27	4.45
8	6.42	6.58	6.68	6.79	6.93	6.84	6.44	5.6
10	6.84	6.99	7.13	7.15	7.55	7.51	7.13	6.48
12	7.04	7.26	7.53	7.56	8.03	8.18	7.79	7.06
14	7.15	7.41	7.81	8.01	8.42	8.85	8.57	7.56
16	7.22	7.5	7.99	8.42	8.81	9.39	9.51	8.23
20	7.29	7.61	8.21	8.96	9.58	10.54	12.35	10.73

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.8°	3.71	143.3°	3.86
8	39.4°	4.47	146.9°	4.85
10	36.9°	4.94	150.1°	5.62
12	35.8°	5.12	149.6°	6.12
14	35.4°	5.2	147.3°	6.55
16	35.4°	5.24	144.3°	7.13
20	36°	5.24	140.8°	9.29

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