ORBALLO UNO — ORC Rating

GPH

665.4

OSN

644.8

LOA

9.61 m

Displacement

3664 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6123

Medium

0.8252

High

0.9315

Triple Offshore

Low

0.7871

Medium

1.0201

High

1.1314

Boat Specifications

Dimensions

Length overall: 9.61 m
Beam: 3.21 m
Draft: 1.92 m
Displacement: 3664 kg
Crew weight: 470 kg
Wetted surface: 21.69 m²

Sails

Mainsail: 25.04 m²
Genoa: 26.99 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 74.53 m²

Design

Type: FIRST 31.7
Builder: BENETEAU
Designer: FINOT
Year built: 1998

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.

6,43.5,4.425301,52,4.9,60,5.15,75,5.3,90,5.27,110,5.36,120,5.19,135,4.65,144.3,4.199075,150,3.94
8,41,5.194051,52,5.8,60,6.04,75,6.2,90,6.28,110,6.44,120,6.31,135,5.8,146.9,5.192674,150,5.02
10,39.5,5.728174,52,6.38,60,6.56,75,6.71,90,6.84,110,7.03,120,6.96,135,6.64,147.2,6.103026,150,5.92
12,38.5,6.018337,52,6.68,60,6.85,75,7.02,90,7.09,110,7.42,120,7.41,135,7.14,148.4,6.657063,150,6.55
14,38.2,6.120707,52,6.81,60,7,75,7.23,90,7.32,110,7.75,120,7.82,135,7.57,150,6.93,150.1,6.921239
16,38.1,6.175859,52,6.86,60,7.07,75,7.38,90,7.56,110,7.98,120,8.2,135,8.01,150,7.24,173.2,6.535977
20,38.5,6.197226,52,6.9,60,7.13,75,7.52,90,7.9,110,8.35,120,8.83,135,8.99,150,7.87,176.2,7.235908
24,39.9,6.165556,52,6.85,60,7.11,75,7.58,90,8.08,110,8.67,120,9.34,135,10.66,150,8.58,175.7,7.862131

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.9	5.15	5.3	5.27	5.36	5.19	4.65	3.94
8	5.8	6.04	6.2	6.28	6.44	6.31	5.8	5.02
10	6.38	6.56	6.71	6.84	7.03	6.96	6.64	5.92
12	6.68	6.85	7.02	7.09	7.42	7.41	7.14	6.55
14	6.81	7	7.23	7.32	7.75	7.82	7.57	6.93
16	6.86	7.07	7.38	7.56	7.98	8.2	8.01	7.24
20	6.9	7.13	7.52	7.9	8.35	8.83	8.99	7.87
24	6.85	7.11	7.58	8.08	8.67	9.34	10.66	8.58

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	3.21	144.3°	3.41
8	41°	3.92	146.9°	4.35
10	39.5°	4.42	147.2°	5.13
12	38.5°	4.71	148.4°	5.67
14	38.2°	4.81	150.1°	6
16	38.1°	4.86	173.2°	6.49
20	38.5°	4.85	176.2°	7.22
24	39.9°	4.73	175.7°	7.84

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