ANNA K: ORC Rating

GPH

689.1

OSN

663.7

LOA

10.87 m

Displacement

5400 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5696

Medium

0.8002

High

0.9311

Triple Offshore

Low

0.7374

Medium

0.9956

High

1.1255

Boat Specifications

Dimensions

Length overall: 10.87 m
Beam: 3.62 m
Draft: 1.77 m
Displacement: 5400 kg
Crew weight: 450 kg
Wetted surface: 26.61 m²

Sails

Mainsail: 28.18 m²
Genoa: 36.71 m²
Spinnaker: 82.16 m²
Asymmetric spinnaker: 0 m²

Design

Type: GIB'SEA 372
Builder: GIBERT MARINE
Designer: JOUBERT/NIVELT
Year built: 1988
Stability index: 114.8

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,45.6,4.116265,52,4.5,60,4.81,75,5,90,4.92,110,5.06,120,4.9,135,4.42,146,3.920208,150,3.76
8,43.6,4.957387,52,5.48,60,5.77,75,5.98,90,6.02,110,6.22,120,6.07,135,5.57,149.6,4.881082,150,4.86
10,42,5.530551,52,6.16,60,6.42,75,6.63,90,6.74,110,6.95,120,6.88,135,6.48,150,5.81,152.3,5.692383
12,41.2,5.91429,52,6.57,60,6.81,75,7.01,90,7.11,110,7.38,120,7.35,135,7.09,150,6.58,155.9,6.310018
14,41.1,6.104331,52,6.77,60,7.02,75,7.26,90,7.33,110,7.71,120,7.73,135,7.51,150,7.11,164.6,6.60723
16,40.8,6.155919,52,6.85,60,7.11,75,7.42,90,7.56,110,7.97,120,8.08,135,7.9,150,7.5,175.4,6.922298
20,41.4,6.199082,52,6.89,60,7.17,75,7.58,90,7.91,110,8.29,120,8.66,135,8.69,150,8.24,178.1,7.654208

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.5	4.81	5	4.92	5.06	4.9	4.42	3.76
8	5.48	5.77	5.98	6.02	6.22	6.07	5.57	4.86
10	6.16	6.42	6.63	6.74	6.95	6.88	6.48	5.81
12	6.57	6.81	7.01	7.11	7.38	7.35	7.09	6.58
14	6.77	7.02	7.26	7.33	7.71	7.73	7.51	7.11
16	6.85	7.11	7.42	7.56	7.97	8.08	7.9	7.5
20	6.89	7.17	7.58	7.91	8.29	8.66	8.69	8.24

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45.6°	2.88	146°	3.25
8	43.6°	3.59	149.6°	4.21
10	42°	4.11	152.3°	5.04
12	41.2°	4.45	155.9°	5.76
14	41.1°	4.6	164.6°	6.37
16	40.8°	4.66	175.4°	6.9
20	41.4°	4.65	178.1°	7.65

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	4.50	5.48	6.16	6.57	6.77	6.85	6.89
60°	4.81	5.77	6.42	6.81	7.02	7.11	7.17
75°	5.00	5.98	6.63	7.01	7.26	7.42	7.58
90°	4.92	6.02	6.74	7.11	7.33	7.56	7.91
110°	5.06	6.22	6.95	7.38	7.71	7.97	8.29
120°	4.90	6.07	6.88	7.35	7.73	8.08	8.66
135°	4.42	5.57	6.48	7.09	7.51	7.90	8.69
150°	3.76	4.86	5.81	6.58	7.11	7.50	8.24