Midnight Bat — ORC Rating

GPH

678.7

OSN

655.1

LOA

10.12 m

Displacement

3700 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6051

Medium

0.8262

High

0.9465

Triple Offshore

Low

0.7727

Medium

0.9996

High

1.11

Boat Specifications

Dimensions

Length overall: 10.12 m
Beam: 2.95 m
Draft: 1.85 m
Displacement: 3700 kg
Crew weight: 400 kg
Wetted surface: 20.07 m²

Sails

Mainsail: 19.82 m²
Genoa: 27.12 m²
Spinnaker: 64.19 m²
Asymmetric spinnaker: 0 m²

Design

Type: Guy 33
Designer: Guy-Christer Lönng
Year built: 1978
Stability index: 114

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.

6,42.4,4.41462,52,4.91,60,5.13,75,5.23,90,5.09,110,5.13,120,4.97,135,4.47,145.1,3.999259,150,3.79
8,40,5.169413,52,5.79,60,5.98,75,6.09,90,6.03,110,6.18,120,6.06,135,5.59,149.3,4.89619,150,4.86
10,38.7,5.689168,52,6.28,60,6.42,75,6.51,90,6.56,110,6.7,120,6.65,135,6.36,150,5.77,152.3,5.6585
12,37.2,5.925703,52,6.53,60,6.66,75,6.77,90,6.82,110,7.03,120,7,135,6.8,150,6.42,159.2,6.075999
14,36.6,6.028768,52,6.67,60,6.81,75,6.96,90,7,110,7.29,120,7.31,135,7.13,150,6.81,173,6.276786
16,36.4,6.100184,52,6.74,60,6.91,75,7.1,90,7.19,110,7.52,120,7.61,135,7.46,150,7.12,177.2,6.657949
20,36.4,6.137456,52,6.8,60,6.99,75,7.28,90,7.5,110,7.83,120,8.2,135,8.24,150,7.77,179,7.251104

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.91	5.13	5.23	5.09	5.13	4.97	4.47	3.79
8	5.79	5.98	6.09	6.03	6.18	6.06	5.59	4.86
10	6.28	6.42	6.51	6.56	6.7	6.65	6.36	5.77
12	6.53	6.66	6.77	6.82	7.03	7	6.8	6.42
14	6.67	6.81	6.96	7	7.29	7.31	7.13	6.81
16	6.74	6.91	7.1	7.19	7.52	7.61	7.46	7.12
20	6.8	6.99	7.28	7.5	7.83	8.2	8.24	7.77

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.26	145.1°	3.28
8	40°	3.96	149.3°	4.21
10	38.7°	4.44	152.3°	5.01
12	37.2°	4.72	159.2°	5.68
14	36.6°	4.84	173°	6.23
16	36.4°	4.91	177.2°	6.65
20	36.4°	4.94	179°	7.25

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