VIRU - I — ORC Rating

GPH

752.7

OSN

729.2

LOA

7.65 m

Displacement

1735 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5471

Medium

0.7423

High

0.8444

Triple Offshore

Low

0.7004

Medium

0.898

High

0.9993

Boat Specifications

Dimensions

Length overall: 7.65 m
Beam: 2.76 m
Draft: 1.54 m
Displacement: 1735 kg
Crew weight: 360 kg
Wetted surface: 12.95 m²

Sails

Mainsail: 17.52 m²
Genoa: 14.98 m²
Spinnaker: 31.67 m²
Asymmetric spinnaker: 0 m²

Design

Type: Conrad 25R
Designer: Petterson
Year built: 1978
Stability index: 101.5

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.

6,41.8,3.903546,52,4.4,60,4.62,75,4.78,90,4.73,110,4.72,120,4.55,135,4.09,148.4,3.58096,150,3.52
8,41.2,4.625108,52,5.2,60,5.4,75,5.52,90,5.6,110,5.6,120,5.47,135,5.01,150,4.43,153.2,4.313311
10,40.2,5.13226,52,5.62,60,5.75,75,5.85,90,5.99,110,6.01,120,5.93,135,5.67,150,5.23,155.6,5.007227
12,37.8,5.328068,52,5.83,60,5.95,75,6.08,90,6.28,110,6.35,120,6.25,135,6.02,150,5.75,167.3,5.330411
14,37.5,5.432636,52,5.96,60,6.11,75,6.29,90,6.52,110,6.7,120,6.59,135,6.34,150,6.07,178.4,5.692219
16,37.2,5.461188,52,6.01,60,6.2,75,6.47,90,6.64,110,7.01,120,6.94,135,6.69,150,6.37,179,6.010915
20,38.5,5.494448,52,6.03,60,6.25,75,6.66,90,6.99,110,7.42,120,7.58,135,7.4,150,7.03,179,6.601005

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.4	4.62	4.78	4.73	4.72	4.55	4.09	3.52
8	5.2	5.4	5.52	5.6	5.6	5.47	5.01	4.43
10	5.62	5.75	5.85	5.99	6.01	5.93	5.67	5.23
12	5.83	5.95	6.08	6.28	6.35	6.25	6.02	5.75
14	5.96	6.11	6.29	6.52	6.7	6.59	6.34	6.07
16	6.01	6.2	6.47	6.64	7.01	6.94	6.69	6.37
20	6.03	6.25	6.66	6.99	7.42	7.58	7.4	7.03

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.8°	2.91	148.4°	3.05
8	41.2°	3.48	153.2°	3.85
10	40.2°	3.92	155.6°	4.56
12	37.8°	4.21	167.3°	5.2
14	37.5°	4.31	178.4°	5.69
16	37.2°	4.35	179°	6.01
20	38.5°	4.3	179°	6.6

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