BOOMERANG: ORC Rating

GPH

652.8

OSN

632.5

LOA

11.964 m

Displacement

6998 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.619

Medium

0.8448

High

0.9817

Triple Offshore

Low

0.7971

Medium

1.0401

High

1.1687

Boat Specifications

Dimensions

Length overall: 11.964 m
Beam: 3.32 m
Draft: 1.75 m
Displacement: 6998 kg
Crew weight: 650 kg
Wetted surface: 31.15 m²

Sails

Mainsail: 39.33 m²
Genoa: 51.65 m²
Spinnaker: 87.36 m²
Asymmetric spinnaker: 0 m²

Design

Type: CAL 40
Builder: JENSEN
Designer: LAPWORTH, WM
Year built: 1963
Stability index: 126.5

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,44.4,4.66078,52,5.11,60,5.41,75,5.6,90,5.5,110,5.21,120,5.06,135,4.59,146,4.077017,150,3.9
8,42.6,5.447651,52,6.03,60,6.28,75,6.45,90,6.41,110,6.31,120,6.17,135,5.7,150,4.99,150.2,4.978304
10,41.5,6.03507,52,6.62,60,6.82,75,6.96,90,6.97,110,7.02,120,6.93,135,6.55,150,5.9,153.2,5.747347
12,40.6,6.335021,52,6.95,60,7.12,75,7.27,90,7.32,110,7.44,120,7.39,135,7.12,150,6.64,157.4,6.314921
14,39.6,6.437268,52,7.09,60,7.27,75,7.48,90,7.57,110,7.77,120,7.75,135,7.52,150,7.14,167.6,6.58358
16,39.4,6.535241,52,7.17,60,7.36,75,7.62,90,7.79,110,8.03,120,8.07,135,7.87,150,7.51,177.2,6.958307
20,39,6.601077,52,7.25,60,7.45,75,7.79,90,8.1,110,8.4,120,8.64,135,8.55,150,8.17,179,7.661167

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.11	5.41	5.6	5.5	5.21	5.06	4.59	3.9
8	6.03	6.28	6.45	6.41	6.31	6.17	5.7	4.99
10	6.62	6.82	6.96	6.97	7.02	6.93	6.55	5.9
12	6.95	7.12	7.27	7.32	7.44	7.39	7.12	6.64
14	7.09	7.27	7.48	7.57	7.77	7.75	7.52	7.14
16	7.17	7.36	7.62	7.79	8.03	8.07	7.87	7.51
20	7.25	7.45	7.79	8.1	8.4	8.64	8.55	8.17

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.4°	3.33	146°	3.38
8	42.6°	4.01	150.2°	4.32
10	41.5°	4.52	153.2°	5.13
12	40.6°	4.81	157.4°	5.83
14	39.6°	4.96	167.6°	6.43
16	39.4°	5.05	177.2°	6.95
20	39°	5.13	179°	7.66

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	5.11	6.03	6.62	6.95	7.09	7.17	7.25
60°	5.41	6.28	6.82	7.12	7.27	7.36	7.45
75°	5.60	6.45	6.96	7.27	7.48	7.62	7.79
90°	5.50	6.41	6.97	7.32	7.57	7.79	8.10
110°	5.21	6.31	7.02	7.44	7.77	8.03	8.40
120°	5.06	6.17	6.93	7.39	7.75	8.07	8.64
135°	4.59	5.70	6.55	7.12	7.52	7.87	8.55
150°	3.90	4.99	5.90	6.64	7.14	7.51	8.17