BALDERDASH — ORC Rating

GPH

726.3

OSN

697.6

LOA

7.5 m

Displacement

1199 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5463

Medium

0.7686

High

0.8988

Triple Offshore

Low

0.7026

Medium

0.9403

High

1.0827

Boat Specifications

Dimensions

Length overall: 7.5 m
Beam: 2.46 m
Draft: 1.65 m
Displacement: 1199 kg
Crew weight: 369 kg
Wetted surface: 13.45 m²

Sails

Mainsail: 16.98 m²
Genoa: 13.54 m²
Spinnaker: 33.81 m²
Asymmetric spinnaker: 0 m²

Design

Type: FARR 7500
Builder: Seqw Nymph
Designer: Bruce Farr
Year built: 1976
Stability index: -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.

4,42.8,2.862089,52,3.25,60,3.44,75,3.56,90,3.46,110,3.47,120,3.23,135,2.78,148.4,2.359911,150,2.33
6,42.8,3.979666,52,4.43,60,4.65,75,4.78,90,4.76,110,4.77,120,4.53,135,3.97,148.4,3.475292,150,3.41
8,41,4.756797,52,5.3,60,5.5,75,5.61,90,5.73,110,5.74,120,5.57,135,5.02,150,4.42,151.8,4.345836
10,39.3,5.272406,52,5.84,60,5.99,75,6.11,90,6.3,110,6.32,120,6.2,135,5.88,150,5.3,154.1,5.113624
12,37.3,5.581581,52,6.16,60,6.31,75,6.46,90,6.69,110,6.84,120,6.7,135,6.39,150,6,162.2,5.608481
14,36.6,5.704908,52,6.33,60,6.53,75,6.78,90,6.9,110,7.32,120,7.22,135,6.87,150,6.45,170.9,5.965078
16,36.3,5.757336,52,6.4,60,6.63,75,6.99,90,7.19,110,7.76,120,7.79,135,7.38,150,6.9,176.3,6.313159
20,36.9,5.814792,52,6.48,60,6.75,75,7.22,90,7.71,110,8.42,120,9.25,135,8.68,150,7.91,171.2,7.204812
24,38.4,5.831362,52,6.48,60,6.79,75,7.35,90,8.03,110,9.1,120,10.67,135,12.17,137.2,11.843596,150,10.03

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
4	3.25	3.44	3.56	3.46	3.47	3.23	2.78	2.33
6	4.43	4.65	4.78	4.76	4.77	4.53	3.97	3.41
8	5.3	5.5	5.61	5.73	5.74	5.57	5.02	4.42
10	5.84	5.99	6.11	6.3	6.32	6.2	5.88	5.3
12	6.16	6.31	6.46	6.69	6.84	6.7	6.39	6
14	6.33	6.53	6.78	6.9	7.32	7.22	6.87	6.45
16	6.4	6.63	6.99	7.19	7.76	7.79	7.38	6.9
20	6.48	6.75	7.22	7.71	8.42	9.25	8.68	7.91
24	6.48	6.79	7.35	8.03	9.1	10.67	12.17	10.03

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
4	42.8°	2.1	148.4°	2.01
6	42.8°	2.92	148.4°	2.96
8	41°	3.59	151.8°	3.83
10	39.3°	4.08	154.1°	4.6
12	37.3°	4.44	162.2°	5.34
14	36.6°	4.58	170.9°	5.89
16	36.3°	4.64	176.3°	6.3
20	36.9°	4.65	171.2°	7.12
24	38.4°	4.57	137.2°	8.69

Loading polar chart…