ISIDOROS — ORC Rating

GPH

742.8

OSN

717.1

LOA

9.005 m

Displacement

3299 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5469

Medium

0.7485

High

0.8711

Triple Offshore

Low

0.6983

Medium

0.9154

High

1.0297

Boat Specifications

Dimensions

Length overall: 9.005 m
Beam: 2.99 m
Draft: 1.7 m
Displacement: 3299 kg
Crew weight: 450 kg
Wetted surface: 17.88 m²

Sails

Mainsail: 16.07 m²
Genoa: 24.63 m²
Spinnaker: 51.63 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 28
Builder: BENETEAU
Designer: FINOT
Year built: 1981
Stability index: 110

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.

6,43.2,3.950787,52,4.37,60,4.57,75,4.69,90,4.59,110,4.67,120,4.53,135,4.11,147.5,3.616352,150,3.53
8,41.4,4.639313,52,5.17,60,5.39,75,5.51,90,5.53,110,5.64,120,5.51,135,5.08,150,4.49,151.4,4.442
10,40.2,5.119168,52,5.69,60,5.87,75,6.01,90,6.12,110,6.23,120,6.15,135,5.85,150,5.31,154.1,5.135857
12,39.3,5.4404,52,6,60,6.15,75,6.3,90,6.44,110,6.57,120,6.53,135,6.31,150,5.94,160.4,5.572909
14,38.4,5.61444,52,6.19,60,6.34,75,6.5,90,6.63,110,6.84,120,6.82,135,6.63,150,6.34,173,5.843557
16,38.4,5.716521,52,6.3,60,6.46,75,6.66,90,6.74,110,7.08,120,7.09,135,6.92,150,6.64,177.2,6.217423
20,38.8,5.786963,52,6.37,60,6.56,75,6.87,90,7.03,110,7.45,120,7.6,135,7.5,150,7.16,179,6.771031

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.37	4.57	4.69	4.59	4.67	4.53	4.11	3.53
8	5.17	5.39	5.51	5.53	5.64	5.51	5.08	4.49
10	5.69	5.87	6.01	6.12	6.23	6.15	5.85	5.31
12	6	6.15	6.3	6.44	6.57	6.53	6.31	5.94
14	6.19	6.34	6.5	6.63	6.84	6.82	6.63	6.34
16	6.3	6.46	6.66	6.74	7.08	7.09	6.92	6.64
20	6.37	6.56	6.87	7.03	7.45	7.6	7.5	7.16

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	2.88	147.5°	3.05
8	41.4°	3.48	151.4°	3.9
10	40.2°	3.91	154.1°	4.62
12	39.3°	4.21	160.4°	5.25
14	38.4°	4.4	173°	5.8
16	38.4°	4.48	177.2°	6.21
20	38.8°	4.51	179°	6.77

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