ARCHIBALD — ORC Rating

GPH

659.3

OSN

637.4

LOA

8.7 m

Displacement

3012 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6186

Medium

0.8397

High

0.9644

Triple Offshore

Low

0.7929

Medium

1.0274

High

1.1613

Boat Specifications

Dimensions

Length overall: 8.7 m
Beam: 3.44 m
Draft: 1.88 m
Displacement: 3012 kg
Crew weight: 554 kg
Wetted surface: 20.1 m²

Sails

Mainsail: 27.87 m²
Genoa: 22.16 m²
Spinnaker: 69.53 m²
Asymmetric spinnaker: 0 m²

Design

Type: BONGO 870
Builder: 3C COMPOSITE
Designer: ROLLAND Pierre
Year built: 2006
Stability index: 104.8

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.

6,43.2,4.458354,52,4.93,60,5.16,75,5.29,90,5.34,110,5.39,120,5.23,135,4.71,145.1,4.218731,150,4
8,41.4,5.252555,52,5.83,60,6.06,75,6.19,90,6.31,110,6.44,120,6.29,135,5.81,149.8,5.090973,150,5.08
10,39.6,5.749414,52,6.37,60,6.54,75,6.68,90,6.83,110,7,120,6.92,135,6.59,150,5.98,153.2,5.82577
12,38.2,6.018908,52,6.67,60,6.83,75,7,90,7.12,110,7.46,120,7.43,135,7.09,150,6.64,159.1,6.283421
14,37.8,6.138036,52,6.83,60,7.03,75,7.28,90,7.37,110,7.87,120,7.92,135,7.6,150,7.1,173,6.488363
16,37.6,6.197229,52,6.91,60,7.15,75,7.51,90,7.68,110,8.21,120,8.41,135,8.13,150,7.57,177.2,6.918259
20,38.2,6.247957,52,6.96,60,7.25,75,7.78,90,8.22,110,8.71,120,9.33,135,9.45,150,8.6,176.6,7.783701

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.93	5.16	5.29	5.34	5.39	5.23	4.71	4
8	5.83	6.06	6.19	6.31	6.44	6.29	5.81	5.08
10	6.37	6.54	6.68	6.83	7	6.92	6.59	5.98
12	6.67	6.83	7	7.12	7.46	7.43	7.09	6.64
14	6.83	7.03	7.28	7.37	7.87	7.92	7.6	7.1
16	6.91	7.15	7.51	7.68	8.21	8.41	8.13	7.57
20	6.96	7.25	7.78	8.22	8.71	9.33	9.45	8.6

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.25	145.1°	3.46
8	41.4°	3.94	149.8°	4.4
10	39.6°	4.43	153.2°	5.2
12	38.2°	4.73	159.1°	5.87
14	37.8°	4.85	173°	6.44
16	37.6°	4.91	177.2°	6.91
20	38.2°	4.91	176.6°	7.77

Loading polar chart…