ZITTO: ORC Rating

GPH

651.6

OSN

631.7

LOA

12.18 m

Displacement

3451 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.599

Medium

0.8391

High

0.9653

Triple Offshore

Low

0.7837

Medium

1.0523

High

1.1806

Boat Specifications

Dimensions

Length overall: 12.18 m
Beam: 2.29 m
Draft: 1.63 m
Displacement: 3451 kg
Crew weight: 400 kg
Wetted surface: 20.68 m²

Sails

Mainsail: 23.04 m²
Genoa: 19.05 m²
Spinnaker: 68.55 m²
Asymmetric spinnaker: 0 m²

Design

Type: YLVA
Builder: KJOELHEDE
Designer: KJOELHEDE
Year built: 1976
Stability index: 123.6

Performance data

Polar CSV

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

6,44.4,4.310872,52,4.75,60,5.05,75,5.28,90,5.35,110,5.49,120,5.33,135,4.76,136.7,4.644307,150,3.91
8,42.4,5.17296,52,5.8,60,6.12,75,6.4,90,6.57,110,6.81,120,6.68,135,6.04,146.9,5.180737,150,5.01
10,42,5.866959,52,6.58,60,6.89,75,7.12,90,7.11,110,7.48,120,7.45,135,7.09,144.7,6.530762,150,6.15
12,41.8,6.130311,52,6.87,60,7.18,75,7.46,90,7.52,110,7.77,120,7.94,135,7.66,150,7.11,154.1,6.892275
14,41.8,6.237625,52,6.97,60,7.28,75,7.66,90,7.84,110,8.02,120,8.32,135,8.22,150,7.64,161.5,7.181093
16,41.8,6.277868,52,7.01,60,7.33,75,7.77,90,8.11,110,8.26,120,8.61,135,8.81,150,8.15,173.6,7.375968
20,42,6.445581,52,7.16,60,7.45,75,7.8,90,8.44,110,8.66,120,9.15,135,10.1,150,9.34,173.6,8.321863

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.75	5.05	5.28	5.35	5.49	5.33	4.76	3.91
8	5.8	6.12	6.4	6.57	6.81	6.68	6.04	5.01
10	6.58	6.89	7.12	7.11	7.48	7.45	7.09	6.15
12	6.87	7.18	7.46	7.52	7.77	7.94	7.66	7.11
14	6.97	7.28	7.66	7.84	8.02	8.32	8.22	7.64
16	7.01	7.33	7.77	8.11	8.26	8.61	8.81	8.15
20	7.16	7.45	7.8	8.44	8.66	9.15	10.1	9.34

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.4°	3.08	136.7°	3.38
8	42.4°	3.82	146.9°	4.34
10	42°	4.36	144.7°	5.33
12	41.8°	4.57	154.1°	6.2
14	41.8°	4.65	161.5°	6.81
16	41.8°	4.68	173.6°	7.33
20	42°	4.79	173.6°	8.27

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°	4.75	5.80	6.58	6.87	6.97	7.01	7.16
60°	5.05	6.12	6.89	7.18	7.28	7.33	7.45
75°	5.28	6.40	7.12	7.46	7.66	7.77	7.80
90°	5.35	6.57	7.11	7.52	7.84	8.11	8.44
110°	5.49	6.81	7.48	7.77	8.02	8.26	8.66
120°	5.33	6.68	7.45	7.94	8.32	8.61	9.15
135°	4.76	6.04	7.09	7.66	8.22	8.81	10.10
150°	3.91	5.01	6.15	7.11	7.64	8.15	9.34