BOW THRUSTERS
16Pages

INTRODUCTION When Veth Propulsion B.V. introduced the VETH-JET channel bow thruster in 1970, a major step forward was made in the manoeuverability of ships. This home made invention has given Veth Propulsion an outstanding international reputation in the marine industry. In the over 55 years that the company exists, it has become a well known thruster specialist. The Veth thrusters have a solid construction, smart design and are easy to maintain. Veth Propulsion has different kinds of thrusters in several power ranges. This makes it possible to select the right thruster(s) in any...

veth-jet leader among bow thrusters Veth Propulsion has always invested in the development of new products. This has resulted a.o. in the Veth-Jet bow thruster installation. When the Veth-Jet was introduced, there was a need for a bow thruster which operated optimally 360 degrees with a shallow draught without vulnerable parts protruding through the ships bottom. The Veth-Jet was the answer to this desire. In the well over 35 years that Veth Propulsion B.V. has produced the Veth-Jet, a product has evolved on which can be depended on under the most severe circumstances. At the time starting...

The principle of operation of the Veth-Jet is as simple as it is effective. With the help of a horizontally mounted propeller, the water is drawn up from underneath the vessel. Through a 360° rotating drum the water is bent 90° and guided into one or two channels making the vessel manoeuvrable. A 2, 3 or 4 channel execution can be chosen of which the 3rd and 4th channel can be used as a brake or emergency propulsion. The side channels are horizontally mounted while the front and aft channel are installed at an angle. The rotating drum can be steered stepless in all directions. Every...

An additional advantage of the horizontally mounted propeller is that also when the ship is sailing the Veth-Jet still develops a considerable thrust. Because of the upwards pressure of the water the propeller keeps drawing up water much longer than for example a tunnel thruster. Veth Propulsion has made a model test in which case the thrust remained equal up to 10 knots. The thrust of the Veth-Jet is high. Per kW about 11 kg of thrust is obtained. The propeller can be optimized in 1 turning direction and in comparison with other systems with horizontal mounted propellers there is a minimal...

The Veth-Jet can be driven, which ever is desired, by a diesel engine, electric motor or Driving in different ways hydraulic motor. In case of a diesel engine or electric motor the engine can be flexibly mounted on top of one of the side channels. A ready made engine foundation can be supplied making the installation of the engine very easy. Veth Propulsion can supply the Veth-Jet with a package including the driving motor when desired by the customer. Diesel driven Driving possibilities

SCHEDULE FREQUENCY DRIVEN VETH-JET There are several electrically driven executions. The revolutions can be controlled by means of a frequency converter, an electrical shaft or by means of a rotary resistance. In the schedule on the left an example of a Veth-Jet with a frequency control panel controlled e-motor is shown. In this situation the same frequency converter is also used to control a loading pump of a tanker. When the generator, during bow thruster use, does not have to drive any other consumers then an electric shaft drive can be an option. Frequency converter This is an...

VETH-JET LEADER AMONG BOW THRUSTERS The rock solid and thought through construction has given the Veth-Jet a reliable name. Composed of high-grade materials and comprehensively tested in practice the Veth-Jet stands for carefree use. The gearbox is manufactured in our own work shop and is equipped with square spirally cut gears and a bronze worm wheel for steering of the rotating drum. This worm wheel is self braking so the drum will always remain in the correct position. The steering is done hydraulically. Besides the steering motor also the hydraulic pump and steering valves are mounted...

There are many reasons to choose a Veth-Jet bow thruster. The main reasons are: Strong qualities: • Fast steering time in about 6 to 7 seconds from PS to SB. • Solid integrated 70:1 worm wheel for steering. • Compact oil bath lubricated gearbox. • Possibility to steer with full propeller rpm. • Hydraulic pump for steering built on gearbox. • Requires a minimum of maintenance. • Solid construction, so long lifetime. Advantages: • Maximum thrust at minimum draught. • The propeller turns in 1 direction (maximum efficiency). • Gives thrust during sailing. • No protruding parts under the vessel....

The standard range of Veth-Jets consists of over 50 executions which is adequate for most applications. When a customer however has additional wishes we can also design on a project basis. On the picture on the left e.g. a Veth-Jet can be seen which was supplied to the American Navy. Special features of this unit are a built in hydraulic clutch and a mechanical emergency steering which were added to the standard design. But also tailor made trainings can be arranged by Veth Propulsion at our factory or on location.

Controls Veth Propulsion has got its own electronics department in which the control systems are developed and fabricated. State of the art technology is used like a CAN bus communication system. The controls of the Veth-Jet are clearly arranged and easy to operate. In the standard supply a separate control panel and read out panel are included for placing in the wheel house. Very practical is the follow up combined control lever for steering and rpm control. In the well arranged display besides the position indicator also the rpm counter, oil pressure and water temperature meter of the...

VETH-JET V EXECUTION For situations in which there is no space for a horizontal driving motor also a vertically driven Veth-Jet can be delivered. This V model can be equipped with electric and hydraulic motors. Because of a sophisticated design the height of the unit is limited to a minimum. Just like the Veth-Jet with the square gearbox the steering worm wheel and the driving gears are integrated in 1 compact gearbox. The unit is oil bath lubricated so that no greasing machines are required and maintenance is kept to a minimum. The gearbox is silent and the unit can be mounted flexibly...