No Secrets — ORC Rating

GPH

663.3

OSN

646.3

LOA

10.112 m

Displacement

3740 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.617

Medium

0.8325

High

0.9415

Triple Offshore

Low

0.7972

Medium

1.0182

High

1.1278

Boat Specifications

Dimensions

Length overall: 10.112 m
Beam: 3.41 m
Draft: 1.72 m
Displacement: 3740 kg
Crew weight: 506 kg
Wetted surface: 21.3 m²

Sails

Mainsail: 28.68 m²
Genoa: 34.51 m²
Spinnaker: 73.46 m²
Asymmetric spinnaker: 0 m²

Design

Type: Optima 101
Builder: Dehler Yachts
Designer: Van de Stadt
Year built: 1981

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.

6,42.8,4.47031,52,5.02,60,5.33,75,5.57,90,5.51,110,5.36,120,5.21,135,4.74,146.5,4.137257,150,3.98
8,42,5.27488,52,5.93,60,6.18,75,6.36,90,6.37,110,6.4,120,6.28,135,5.8,150,5,150.5,4.974977
10,41.1,5.878736,52,6.43,60,6.59,75,6.72,90,6.77,110,6.88,120,6.82,135,6.55,150,5.93,151,5.87684
12,39.8,6.065469,52,6.64,60,6.8,75,6.97,90,7.04,110,7.27,120,7.21,135,6.96,150,6.59,160,6.22544
14,39.4,6.15995,52,6.73,60,6.92,75,7.18,90,7.29,110,7.64,120,7.63,135,7.35,150,6.96,180,6.44
16,39.4,6.198773,52,6.77,60,6.98,75,7.33,90,7.54,110,7.93,120,8.02,135,7.76,150,7.32,180,6.84
20,40.5,6.180909,52,6.77,60,7.01,75,7.46,90,7.91,110,8.27,120,8.66,135,8.62,150,8.09,180,7.53

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.02	5.33	5.57	5.51	5.36	5.21	4.74	3.98
8	5.93	6.18	6.36	6.37	6.4	6.28	5.8	5
10	6.43	6.59	6.72	6.77	6.88	6.82	6.55	5.93
12	6.64	6.8	6.97	7.04	7.27	7.21	6.96	6.59
14	6.73	6.92	7.18	7.29	7.64	7.63	7.35	6.96
16	6.77	6.98	7.33	7.54	7.93	8.02	7.76	7.32
20	6.77	7.01	7.46	7.91	8.27	8.66	8.62	8.09

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.28	146.5°	3.45
8	42°	3.92	150.5°	4.33
10	41.1°	4.43	151°	5.14
12	39.8°	4.66	160°	5.85
14	39.4°	4.76	180°	6.44
16	39.4°	4.79	180°	6.84
20	40.5°	4.7	180°	7.53

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