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Azimuth Grid Thruster

Resistant to grounding
Suitable for shallow water
Low-noise operating mode

The Jastram azimuth grid thruster is capable of providing highly accurate dynamic positioning, responsive steering and emergency propulsion.

Mounted flush to the bottom of the vessel, it has no protruding parts which could be damaged in shallow water. A removable grid protects the horizontally mounted propeller. Smaller parts and sand are washed through the large-volume housing.

A special propeller generates effective thrust with a high volume at a low pressure.

With the solid Jastram thruster gear, the water is pumped through the 360° rotating steering grid.

Turning the grid by up to 180° in 8 seconds, the thruster provides immediate thrust in all directions.

The prime mover can be moved by 180° around the propeller according to the given installation conditions in the hull structure.

table

The given thrust range is based on experience as well as calculations using the column 'Max kW' and is about 70% of the thrust of transverse thrusters. 'Max kW' may differ for requirements of classification societies.

TypeProp
ø mm
Max
Input
Rpm
Max
kW
Max kW
Diesel
DP*
Thrust
approx
kN
BU106201.500
1.800
70
83
 6-8
7-9
BU208401.500
1.800
138
165
116
140
11-15
12-17
BU409901.500
1.800
217
260
187
225
16-22
18-25
BU501.0001.50031531521-29
BU601.2201.500
1.800
510
610
426
510
33-46
37-51
BU901.6001.500
1.800
583
700
500*
600*
43-60
48-67
BU1001.9401.000
1.200
750
900
688*
825*
57-80
64-90

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details

Ro Ro vessel with four azimuth grid thrusters for transporting Airbus A380 wings in shallow water and extremely tight river sections at high tidal ranges.

Four azimuth grid thrusters for optimum manoeuvrability have been installed in two heavy-lift barges which can be named as reference projects.

Two 600kW Jastram W90 azimuth grid thrusters in the bow of the ARCOS ensure the dynamic positioning capability for cable laying and servicing in shallow water areas.

River cruise vessel with Jastram azimuth grid thruster in the bow section and Jastram active noise reduction.

technical features

The thruster gear is bolted to the housing and can be mounted and dismounted during docking.

The propeller is mounted with a tight oil press fit which allows rapid mounting and dismounting during shaft seal changes.

The stainless steel ring in the propeller tip region protects the housing against cavitation damage.

The oil lubrication system with oil level sensor (to be installed by the shipyard above waterline) protects the seals against water ingress.

options

Impressed current cathodic protection (ICCP) instead of anodes for longer life and reduced resistance in the housing.

Active noise reduction to reduce cavitation noise.