VIVA: ORC Rating

GPH

648.5

OSN

630.4

LOA

11.963 m

Displacement

6715 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6186

Medium

0.8434

High

0.9753

Triple Offshore

Low

0.8012

Medium

1.0477

High

1.1737

Boat Specifications

Dimensions

Length overall: 11.963 m
Beam: 3.32 m
Draft: 1.76 m
Displacement: 6715 kg
Crew weight: 449 kg
Wetted surface: 30.48 m²

Sails

Mainsail: 39.75 m²
Genoa: 50.17 m²
Spinnaker: 96.5 m²
Asymmetric spinnaker: 101.43 m²

Design

Type: CAL 40
Builder: JENSEN
Designer: LAPWORTH, WM
Year built: 1963
Stability index: 130.8

Performance data

Polar CSV

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

6,44.8,4.552048,52,4.98,60,5.28,75,5.55,90,5.51,110,5.42,120,5.27,135,4.77,145.1,4.291888,150,4.06
8,43.6,5.357844,52,5.93,60,6.26,75,6.51,90,6.5,110,6.59,120,6.44,135,5.92,148.7,5.172865,150,5.11
10,43.8,6.096207,52,6.65,60,6.88,75,7.04,90,7.12,110,7.24,120,7.16,135,6.84,148.4,6.175688,150,6.07
12,42.4,6.364637,52,6.95,60,7.16,75,7.34,90,7.4,110,7.64,120,7.59,135,7.33,150,6.86,155.9,6.58389
14,41.7,6.495784,52,7.07,60,7.28,75,7.55,90,7.67,110,7.99,120,8.01,135,7.73,150,7.31,166.4,6.800684
16,41.1,6.55552,52,7.13,60,7.35,75,7.67,90,7.92,110,8.24,120,8.4,135,8.15,150,7.68,177.2,7.118499
20,41.2,6.578817,52,7.17,60,7.4,75,7.8,90,8.25,110,8.59,120,8.97,135,8.98,150,8.45,178.1,7.824302

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.98	5.28	5.55	5.51	5.42	5.27	4.77	4.06
8	5.93	6.26	6.51	6.5	6.59	6.44	5.92	5.11
10	6.65	6.88	7.04	7.12	7.24	7.16	6.84	6.07
12	6.95	7.16	7.34	7.4	7.64	7.59	7.33	6.86
14	7.07	7.28	7.55	7.67	7.99	8.01	7.73	7.31
16	7.13	7.35	7.67	7.92	8.24	8.4	8.15	7.68
20	7.17	7.4	7.8	8.25	8.59	8.97	8.98	8.45

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.8°	3.23	145.1°	3.52
8	43.6°	3.88	148.7°	4.42
10	43.8°	4.4	148.4°	5.26
12	42.4°	4.7	155.9°	6.01
14	41.7°	4.85	166.4°	6.61
16	41.1°	4.94	177.2°	7.11
20	41.2°	4.95	178.1°	7.82

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°	4.98	5.93	6.65	6.95	7.07	7.13	7.17
60°	5.28	6.26	6.88	7.16	7.28	7.35	7.40
75°	5.55	6.51	7.04	7.34	7.55	7.67	7.80
90°	5.51	6.50	7.12	7.40	7.67	7.92	8.25
110°	5.42	6.59	7.24	7.64	7.99	8.24	8.59
120°	5.27	6.44	7.16	7.59	8.01	8.40	8.97
135°	4.77	5.92	6.84	7.33	7.73	8.15	8.98
150°	4.06	5.11	6.07	6.86	7.31	7.68	8.45