Midnight Bat — ORC Rating

GPH

679.3

OSN

655.6

LOA

10.12 m

Displacement

3700 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6036

Medium

0.8257

High

0.9479

Triple Offshore

Low

0.7712

Medium

0.9991

High

1.1101

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: 20.22 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

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.

6,42.5,4.408111,52,4.9,60,5.12,75,5.22,90,5.08,110,5.12,120,4.96,135,4.47,144.8,4.001738,150,3.77
8,40.2,5.18463,52,5.78,60,5.98,75,6.08,90,6.03,110,6.17,120,6.05,135,5.58,148.9,4.905012,150,4.85
10,38.6,5.694029,52,6.27,60,6.41,75,6.51,90,6.55,110,6.7,120,6.64,135,6.35,150,5.76,151.8,5.662068
12,37.1,5.93041,52,6.53,60,6.66,75,6.77,90,6.82,110,7.02,120,6.99,135,6.78,150,6.4,158.5,6.08329
14,36.5,6.045852,52,6.67,60,6.81,75,6.95,90,6.99,110,7.28,120,7.3,135,7.11,150,6.8,171.8,6.274145
16,36.1,6.101562,52,6.75,60,6.91,75,7.1,90,7.18,110,7.51,120,7.6,135,7.44,150,7.1,177.9,6.634456
20,36.1,6.151067,52,6.8,60,6.98,75,7.28,90,7.5,110,7.81,120,8.18,135,8.21,150,7.74,178.6,7.222156
24,37.1,6.131016,52,6.8,60,7,75,7.34,90,7.72,110,7.98,120,8.59,135,9.35,150,8.64,177.7,7.846321

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.9	5.12	5.22	5.08	5.12	4.96	4.47	3.77
8	5.78	5.98	6.08	6.03	6.17	6.05	5.58	4.85
10	6.27	6.41	6.51	6.55	6.7	6.64	6.35	5.76
12	6.53	6.66	6.77	6.82	7.02	6.99	6.78	6.4
14	6.67	6.81	6.95	6.99	7.28	7.3	7.11	6.8
16	6.75	6.91	7.1	7.18	7.51	7.6	7.44	7.1
20	6.8	6.98	7.28	7.5	7.81	8.18	8.21	7.74
24	6.8	7	7.34	7.72	7.98	8.59	9.35	8.64

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.5°	3.25	144.8°	3.27
8	40.2°	3.96	148.9°	4.2
10	38.6°	4.45	151.8°	4.99
12	37.1°	4.73	158.5°	5.66
14	36.5°	4.86	171.8°	6.21
16	36.1°	4.93	177.9°	6.63
20	36.1°	4.97	178.6°	7.22
24	37.1°	4.89	177.7°	7.84

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