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Kort Thrusters

Kort Service

The Kort thruster range has evolved in response to customer demand.

Our reputation is for provision of impartial advice and effective propulsion packages which have grown to include our range of tunnelthrusters and small azimuthing propulsion units.

These are designed for hydraulic drive up to a maximum of 300 input power. Where larger units are required Kort can call on the expertise of Cogama whose thruster range now covers units up to 3500 kW.

Kort Range

Our thrusters are primarily designed for commercial displacement vessels but have been successfully fitted to planing craft and inland waterways pleasure craft.

Long service life and ease of maintenance have been key factors in design and development.

Models KT30-KT170 have the hydraulic motor fitted in the drive housing directly coupled to the propeller shaft which runs in taper roller bearings housed in the nose cone assembly. These are pre fitted and tested prior to delivery.

Models KT200-KT300 have a lower gearbox within the tunnel with the hydraulic motor plugged into the input housing inside the vessel. These larger units can also have diesel drive via a cardan shaft and right angle gearbox. A range of ratios is available to suit engine rating.

Alll models can be supplied to suit a range of system operating pressures and can be integrated with either closed loop or open loop hydraulic systems.

All units are supplied with a comprehensive instruction manual.

Our joint experience working with shipbuilders and repairers has influenced the design of our thrusters, resulting in lower installation costs and more reliable commissioning.

Hydraulic services and testing can be carried out on site in conjunction with Hercules Hydraulics.

All models can be supplied to suit either 210 or 280 bar system pressure and can be integrated with either closed loop or open loop hydraulic systems.

Materials

Kort thrusters are designed for the commercial displacement vessel however they have been successfully fitted to planing craft and inland waterways pleasure craft.

Long service life and ease of maintenance have been key factors in design and development of Kort thrusters.

Tunnels are supplied in standard lengths in mild steel, aluminum or grp with stainless steel ring in way of the propeller.

Wheelhouse controls

Our intelligent wheelhouse controller gives big boat performance at small boat cost.

The Thruster Controller is a 24V DC unit, seadled to IP65 standards for wheelhouse or protected external locations only. Thrust control is via a proportional "put and stay" joystick. Each unit can be selected for duty or set to standby and monitors four alarms. The unit is pre-wired, tested and supplied with plugs and two metres of cable.

Incorporating a proportional control, warning lights and a test for alarm it can be integrated with an autopilot and either single or multi-station systems with full control can be supplied.

Installation and Maintenance

All units are supplied with a comprehensive instruction manual. Experience working with shipbuilders and repairers has been a central factor in the design of Kort Thrusters resulting in lower installation costs and more reliable commissioning which can normally be carried out unsupervised.

Hydraulic Tunnel Thrusters

Model	Propeller	Input(kW)	Thrust (Kg)	A(mm)	B(mm)
KT30	375	19	320	800	406
KT45	375	27	420	800	406
KT70	505	28	500	900	559
KT90	505	37	620	900	559
KT120	505	56	800	900	559
KT140	700	53	970	1250	762
KT170	700	88	1360	1250	762
KT150	750	105	1625	1500	813
KT200	750	123	1845	1500	813
KT250	750	170	2235	1500	813
KT300	750	223	2700	1500	813

Kort Thruster Downloads

Electric Tunnel Thrusters

Model	KT70-650E	KT100-750E	KT120-750E	KT160-750E
Prop Diameter	650	750	750	750
KW	70	100	120	160
HP	94	134	160	215
Prop RPM	735	735	735	735
Motor RPM	1470	1470	1470	1470
Thrust - (kg)	825	1150	1325	1550
Tunnel OD	706	806	806	806
Tunnel Thickness	22	22	22	22
Tunnel Length	1500	1500	1500	1500

Model	KT200-750E	KT200-1000E	KT250-1000E	KT300-1000E
Prop Diameter	750	1000	1000	1000
KW	200	200	250	300
HP	268	268	335	402
Prop RPM	735	600	600	606
Motor RPM	1470	1200	1200	1200
Thrust - (kg)	1850	2350	2625	2950
Tunnel OD	806	1067	1067	1067
Tunnel Thickness	22	25	25	25
Tunnel Length	1500	2000	2000	2000

Kort Steerable Thruster Units

The KORT KT300 steerable thruster was developed using the tunnelthruster lower gearbox and has a maximum rating of300 bhp. The unit can be driven directly by hydraulic motor or by diesel via a cardan shaft and right angle gearbox. This configuration can also be offered for electric drive where required.

With either power supply, there is the option of open propeller or Kort Nozzle where higher thrust is required. The units and propellers can be custom designed to suit a given vessel.

Several applications have been supplied to date. The first was a twin screw workboat with 2 x 200 bhp Cummins diesel drive, another, a single screw inland river craft and a recent dredger shows the flexibility of the Kort package.

For this 13m vessel, Kort supplied the Doosan Daewoo engine package with baseframe, together with hydraulic drive package through Hercules Hydraulics.

Our KT200 thruster unit was installed in a cofferdam at the stern and was pre-piped and tested prior to delivery to the shipyard.

This provided a relatively simple solution for installation and on-going maintenance.
The Thameswey was built by Richards Drydock & Engineering for the Environmental Agency and has been in service since June 2006.

Kort are looking at several applications for small single screw vessels with KT200 steerable propulsion units, in particular some fish farm workboats and small harbour workboats.