Ulla: ORC Rating

GPH

650.7

OSN

632.3

LOA

11.02 m

Displacement

5560 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6295

Medium

0.8493

High

0.9719

Triple Offshore

Low

0.8085

Medium

1.0398

High

1.1558

Boat Specifications

Dimensions

Length overall: 11.02 m
Beam: 3.62 m
Draft: 2.02 m
Displacement: 5560 kg
Crew weight: 450 kg
Wetted surface: 25.55 m²

Sails

Mainsail: 28.46 m²
Genoa: 43.94 m²
Spinnaker: 90.06 m²
Asymmetric spinnaker: 0 m²

Design

Type: X-372
Builder: X-Yachts
Designer: Niels Jeppesen
Year built: 1987

Performance data

Polar CSV

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

6,42.4,4.56358,52,5.1,60,5.37,75,5.58,90,5.52,110,5.34,120,5.2,135,4.74,146,4.221763,150,4.04
8,41.1,5.334654,52,6.01,60,6.29,75,6.48,90,6.45,110,6.46,120,6.33,135,5.82,150,5.069135
10,41.2,6.007324,52,6.6,60,6.77,75,6.9,90,6.91,110,7.03,120,6.96,135,6.67,150,5.99,151,5.934008
12,39.8,6.26071,52,6.85,60,7.01,75,7.15,90,7.18,110,7.37,120,7.33,135,7.11,150,6.71,157,6.409526
14,39,6.356592,52,6.97,60,7.14,75,7.34,90,7.41,110,7.69,120,7.69,135,7.45,150,7.11,180,6.51
16,39,6.42093,52,7.02,60,7.21,75,7.49,90,7.63,110,7.93,120,8.05,135,7.82,150,7.43,180,6.97
20,39.8,6.45595,52,7.05,60,7.26,75,7.65,90,8,110,8.25,120,8.59,135,8.59,150,8.12,180,7.59

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.1	5.37	5.58	5.52	5.34	5.2	4.74	4.04
8	6.01	6.29	6.48	6.45	6.46	6.33	5.82	5.07
10	6.6	6.77	6.9	6.91	7.03	6.96	6.67	5.99
12	6.85	7.01	7.15	7.18	7.37	7.33	7.11	6.71
14	6.97	7.14	7.34	7.41	7.69	7.69	7.45	7.11
16	7.02	7.21	7.49	7.63	7.93	8.05	7.82	7.43
20	7.05	7.26	7.65	8	8.25	8.59	8.59	8.12

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.37	146°	3.5
8	41.1°	4.02	150°	4.39
10	41.2°	4.52	151°	5.19
12	39.8°	4.81	157°	5.9
14	39°	4.94	180°	6.51
16	39°	4.99	180°	6.97
20	39.8°	4.96	180°	7.59

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°	5.10	6.01	6.60	6.85	6.97	7.02	7.05
60°	5.37	6.29	6.77	7.01	7.14	7.21	7.26
75°	5.58	6.48	6.90	7.15	7.34	7.49	7.65
90°	5.52	6.45	6.91	7.18	7.41	7.63	8.00
110°	5.34	6.46	7.03	7.37	7.69	7.93	8.25
120°	5.20	6.33	6.96	7.33	7.69	8.05	8.59
135°	4.74	5.82	6.67	7.11	7.45	7.82	8.59
150°	4.04	5.07	5.99	6.71	7.11	7.43	8.12