WALROSS IV — ORC Rating

GPH

522.7

OSN

508.2

LOA

16.99 m

Displacement

19084 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7543

Medium

1.0358

High

1.2153

Triple Offshore

Low

0.9877

Medium

1.3031

High

1.4779

Boat Specifications

Dimensions

Length overall: 16.99 m
Beam: 4.58 m
Draft: 2.96 m
Displacement: 19084 kg
Crew weight: 960 kg
Wetted surface: 61.68 m²

Sails

Mainsail: 90.17 m²
Genoa: 69.52 m²
Spinnaker: 206.13 m²
Asymmetric spinnaker: 0 m²

Design

Type: NISSEN 56
Builder: BERLIN/GLUECKSTADT
Designer: NISSEN
Year built: 2006
Stability index: 130.1

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.

6,44.7,5.838496,52,6.45,60,6.89,75,7.23,90,7.13,110,6.39,120,6.2,135,5.52,140.6,5.150546,150,4.6
8,42.4,6.892766,52,7.71,60,8.12,75,8.42,90,8.36,110,7.89,120,7.72,135,7.01,144.8,6.265719,150,5.91
10,41.2,7.469283,52,8.39,60,8.77,75,9.07,90,9.09,110,8.92,120,8.81,135,8.22,147.8,7.279662,150,7.11
12,40,7.754119,52,8.7,60,9.04,75,9.41,90,9.53,110,9.49,120,9.47,135,9.06,150,8.16,151.4,8.063938
14,39.6,7.968714,52,8.91,60,9.22,75,9.61,90,9.85,110,9.87,120,9.97,135,9.63,150,8.97,155.9,8.610545
16,39.4,8.10111,52,9.03,60,9.34,75,9.74,90,10.12,110,10.27,120,10.44,135,10.16,150,9.53,162.8,8.918866
20,39.3,8.244596,52,9.16,60,9.47,75,9.97,90,10.45,110,11.07,120,11.21,135,11.3,150,10.58,177.2,9.611475

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.45	6.89	7.23	7.13	6.39	6.2	5.52	4.6
8	7.71	8.12	8.42	8.36	7.89	7.72	7.01	5.91
10	8.39	8.77	9.07	9.09	8.92	8.81	8.22	7.11
12	8.7	9.04	9.41	9.53	9.49	9.47	9.06	8.16
14	8.91	9.22	9.61	9.85	9.87	9.97	9.63	8.97
16	9.03	9.34	9.74	10.12	10.27	10.44	10.16	9.53
20	9.16	9.47	9.97	10.45	11.07	11.21	11.3	10.58

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.7°	4.15	140.6°	3.98
8	42.4°	5.09	144.8°	5.12
10	41.2°	5.62	147.8°	6.16
12	40°	5.94	151.4°	7.08
14	39.6°	6.14	155.9°	7.86
16	39.4°	6.26	162.8°	8.52
20	39.3°	6.38	177.2°	9.6

Loading polar chart…