THIRLMERE — ORC Rating

GPH

567.3

OSN

551.5

LOA

11.795 m

Displacement

5590 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8174

Medium

1.0937

High

1.2465

Triple Offshore

Low

1.0502

Medium

1.3372

High

1.4958

Boat Specifications

Dimensions

Length overall: 11.795 m
Beam: 3.71 m
Draft: 2.61 m
Displacement: 5590 kg
Crew weight: 754 kg
Wetted surface: 30.13 m²

Sails

Mainsail: 51.49 m²
Genoa: 37.85 m²
Spinnaker: 128.74 m²
Asymmetric spinnaker: 0 m²

Design

Type: SYDNEY 38 OD
Builder: SYDNEY YACHTS
Designer: Murray/Burns/Dovel
Year built: 2000

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.

6,42.2,5.197052,52,5.83,60,6.14,75,6.4,90,6.34,110,6.28,120,6.12,135,5.54,143.1,5.064496,150,4.68
8,40.7,6.173048,52,6.93,60,7.18,75,7.35,90,7.36,110,7.47,120,7.36,135,6.84,146.7,6.065991,150,5.86
10,39,6.768355,52,7.49,60,7.67,75,7.81,90,7.82,110,8.05,120,7.99,135,7.66,150,6.91,150.3,6.895905
12,37.6,6.916662,52,7.67,60,7.88,75,8.14,90,8.19,110,8.45,120,8.56,135,8.18,150,7.64,156.8,7.311219
14,37.6,7.030257,52,7.76,60,7.98,75,8.37,90,8.59,110,8.74,120,9.09,135,8.78,150,8.12,172.2,7.388358
16,37,7.087088,52,7.8,60,8.04,75,8.5,90,8.93,110,9.05,120,9.47,135,9.45,150,8.66,180,7.84
20,37.2,7.206258,52,7.94,60,8.22,75,8.63,90,9.3,110,9.65,120,10.15,135,11.12,150,9.96,180,8.83

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.83	6.14	6.4	6.34	6.28	6.12	5.54	4.68
8	6.93	7.18	7.35	7.36	7.47	7.36	6.84	5.86
10	7.49	7.67	7.81	7.82	8.05	7.99	7.66	6.91
12	7.67	7.88	8.14	8.19	8.45	8.56	8.18	7.64
14	7.76	7.98	8.37	8.59	8.74	9.09	8.78	8.12
16	7.8	8.04	8.5	8.93	9.05	9.47	9.45	8.66
20	7.94	8.22	8.63	9.3	9.65	10.15	11.12	9.96

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.2°	3.85	143.1°	4.05
8	40.7°	4.68	146.7°	5.07
10	39°	5.26	150.3°	5.99
12	37.6°	5.48	156.8°	6.72
14	37.6°	5.57	172.2°	7.32
16	37°	5.66	180°	7.84
20	37.2°	5.74	180°	8.83

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