SUMBRA IV — ORC Rating

GPH

626.7

OSN

611.2

LOA

11.2 m

Displacement

5497 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6732

Medium

0.8821

High

0.9931

Triple Offshore

Low

0.8604

Medium

1.0703

High

1.1718

Boat Specifications

Dimensions

Length overall: 11.2 m
Beam: 3.5 m
Draft: 2.11 m
Displacement: 5497 kg
Crew weight: 650 kg
Wetted surface: 26.05 m²

Sails

Mainsail: 32.92 m²
Genoa: 59.99 m²
Spinnaker: 99.6 m²
Asymmetric spinnaker: 0 m²

Design

Type: One Tonner
Builder: Huisman
Designer: Peterson
Year built: 1974
Stability index: 129.4

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.

6,41.8,4.949858,52,5.55,60,5.84,75,6.07,90,5.98,110,5.54,120,5.4,135,4.94,146.2,4.416448,150,4.23
8,41.4,5.825804,52,6.46,60,6.65,75,6.78,90,6.77,110,6.65,120,6.54,135,6.07,150,5.3,150.5,5.273706
10,39.9,6.191626,52,6.8,60,6.95,75,7.08,90,7.11,110,7.14,120,7.09,135,6.84,150,6.26,152,6.149855
12,38.4,6.290725,52,6.92,60,7.09,75,7.28,90,7.36,110,7.49,120,7.47,135,7.25,150,6.89,159.2,6.546675
14,38.2,6.400656,52,6.99,60,7.16,75,7.42,90,7.59,110,7.79,120,7.86,135,7.64,150,7.26,173,6.730166
16,38.2,6.426106,52,7.03,60,7.2,75,7.51,90,7.79,110,7.98,120,8.21,135,8.06,150,7.63,179,7.09108
20,37.8,6.492397,52,7.07,60,7.23,75,7.6,90,8.02,110,8.27,120,8.62,135,8.86,150,8.42,178.1,7.78428

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.55	5.84	6.07	5.98	5.54	5.4	4.94	4.23
8	6.46	6.65	6.78	6.77	6.65	6.54	6.07	5.3
10	6.8	6.95	7.08	7.11	7.14	7.09	6.84	6.26
12	6.92	7.09	7.28	7.36	7.49	7.47	7.25	6.89
14	6.99	7.16	7.42	7.59	7.79	7.86	7.64	7.26
16	7.03	7.2	7.51	7.79	7.98	8.21	8.06	7.63
20	7.07	7.23	7.6	8.02	8.27	8.62	8.86	8.42

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.8°	3.69	146.2°	3.67
8	41.4°	4.37	150.5°	4.59
10	39.9°	4.75	152°	5.43
12	38.4°	4.93	159.2°	6.12
14	38.2°	5.03	173°	6.68
16	38.2°	5.05	179°	7.09
20	37.8°	5.13	178.1°	7.78

Loading polar chart…