WALKABOUT — ORC Rating

GPH

643.3

OSN

627.6

LOA

9.98 m

Displacement

3800 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6627

Medium

0.8555

High

0.9526

Triple Offshore

Low

0.8436

Medium

1.0391

High

1.1377

Boat Specifications

Dimensions

Length overall: 9.98 m
Beam: 3.56 m
Draft: 1.91 m
Displacement: 3800 kg
Crew weight: 480 kg
Wetted surface: 21.15 m²

Sails

Mainsail: 32.84 m²
Genoa: 30.2 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 83.75 m²

Design

Type: Isola 34
Builder: Politi
Designer: FontanaMalettoNavo
Year built: 1982
Stability index: 112.4

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.

6,42.9,4.859784,52,5.38,60,5.63,75,5.79,90,5.68,110,5.69,120,5.53,135,4.98,144.3,4.506926,150,4.22
8,40,5.561035,52,6.15,60,6.32,75,6.42,90,6.45,110,6.54,120,6.44,135,6.07,147.8,5.447929,150,5.32
10,38.1,5.934416,52,6.53,60,6.66,75,6.76,90,6.85,110,6.99,120,6.93,135,6.67,149.5,6.162744,150,6.13
12,37,6.085379,52,6.72,60,6.86,75,7,90,7.07,110,7.33,120,7.31,135,7.07,150,6.6,150.5,6.572026
14,36.6,6.165785,52,6.81,60,6.97,75,7.19,90,7.28,110,7.63,120,7.68,135,7.46,150,6.9,173.6,6.208693
16,36.6,6.228066,52,6.86,60,7.04,75,7.32,90,7.49,110,7.9,120,8.06,135,7.87,150,7.17,176.3,6.603765
20,37,6.2732,52,6.92,60,7.12,75,7.47,90,7.82,110,8.32,120,8.86,135,8.89,150,7.77,177.2,7.208606

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.38	5.63	5.79	5.68	5.69	5.53	4.98	4.22
8	6.15	6.32	6.42	6.45	6.54	6.44	6.07	5.32
10	6.53	6.66	6.76	6.85	6.99	6.93	6.67	6.13
12	6.72	6.86	7	7.07	7.33	7.31	7.07	6.6
14	6.81	6.97	7.19	7.28	7.63	7.68	7.46	6.9
16	6.86	7.04	7.32	7.49	7.9	8.06	7.87	7.17
20	6.92	7.12	7.47	7.82	8.32	8.86	8.89	7.77

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	3.56	144.3°	3.66
8	40°	4.26	147.8°	4.61
10	38.1°	4.67	149.5°	5.31
12	37°	4.86	150.5°	5.72
14	36.6°	4.95	173.6°	6.17
16	36.6°	5	176.3°	6.59
20	37°	5.01	177.2°	7.2

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