BOW THRUSTERS

S p E E d S y O U R p E R f O R m a n c E

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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 application.

There is a wide range of in-house developed

products like the Veth-Z-Drive rudder propeller,

the Veth-Compact-Jet, the Veth Tunnel Thruster

and the Veth Ballast Pump. Veth Propulsion

also has its own diesel department in

which generator sets are built with Scania

and SisuDiesel for marine applications.

InTROdUcTIOn

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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 with 100 and 200 hp, the range has grown

in standard ratings to over 2000 hp. The Veth-Jet finds its

application in both inland waterway vessels and seagoing ships.

In the meantime over 1500 units are installed in a diverse range

of ships all over the world.

Continued product development in mechanical, hydro dynamical

and electrical field makes sure that the Veth-Jet is and remains

the leader among bow thrusters.

vETH-jET lEadER amOng

BOW THRUSTERS

vETH-jET

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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 position in between can be chosen with the 3 and

4 channel system.

A major benefit of the Veth-Jet is that with a minimal draught

the maximum thrust can be achieved without parts protruding

through the ships hull. A draught of 35 cm can be enough

depending on the size of the unit.

pRIncIplE Of OpERaTIOn

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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 turn of

the water and a

horizontal pressure.

Besides the in house development there is

a close cooperation with several research centers.

The pictures below show tank tests during which thrust was

measured on a sailing ship.

pRIncIplE Of OpERaTIOn

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The Veth-Jet can be driven, which ever is

desired, by a diesel engine, electric motor or

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.

dRIvIng pOSSIBIlITIES

dIESEl dRIvEn

dRIvIng In

dIffEREnT WayS

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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

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.

This is an economically interesting solution in which the revolutions

are controlled by the diesel engine of the generator set.

Veth Propulsion has a great expertise and experience with all these

systems and can advise the best solution for every situation.

ScHEdUlE fREQUEncy dRIvEn vETH-jET

cOnTROlBOx

fREQUEncy cOnvERTER

cOnTROl panEl

caRgO pUmp

vETH-jET BOW THRUSTER

SWITcH

gEnERaTOR SET

ElEcTRIcally dRIvEn

HydRaUlIcally dRIvEn

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All rotating parts air oil bath lubricated so that the installation

requires a minimum of maintenance. The Veth-Jet has a long

life time with a minimum amount of wear because every

Veth-Jet is designed with high safety factors.

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 on the

gearbox which makes the Veth-Jet a compact and self-contained

thruster. The steering system is so strong that it is able to steer

with full engine rpm without any problem.

pROdUcT pROfIlE

vETH-jET lEadER amOng

BOW THRUSTERS

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Advantages:

• Maximumthrustatminimumdraught.

• Thepropellerturnsin1direction(maximumefficiency).

• Givesthrustduringsailing.

• Noprotrudingpartsunderthevessel.

• The3and4channelsystemcanalsobeusedasauxiliary

propulsion or brake.

• Highthrust:about11kg./kW.

• Noreverseclutchisrequired.

• Possibilitytochangepropellerwithoutdocking.

There are many reasons to choose a Veth-Jet bow thruster.

Themainreasonsare:

Strong qualities:

• Faststeeringtimeinabout6to7secondsfromPStoSB.

• Solidintegrated70:1wormwheelforsteering.

• Compactoilbathlubricatedgearbox.

• Possibilitytosteerwithfullpropellerrpm.

• Hydraulicpumpforsteeringbuiltongearbox.

• Requiresaminimumofmaintenance.

• Solidconstruction,solonglifetime.

Type 2k/3k/4k Maximum Power Nominal Reduction Propeller kW (Hp) revolutions diameter

K-800 184(250) 1800 3,071:1 780mm

K-1000 276(375) 1800 3,071:1 980mm

K-1200 404(550) 1800 4:1 1180mm

K-1300 478(650) 1800 4:1 1280mm

K-1400A 553(752) 1800 4,455:1 1420mm

K-1400 687(934) 1800 4,909:1 1420mm

K-1500 725(986) 1800 4,909:1 1520mm

K-1650 956(1300) 1800 5,091:1 1650mm

K-1750 1102(1499) 1800 5,091:1 1750mm

K-1800 1250(1700) 1800 5,583:1 1800mm

K-2200 1600(2176) 1200 4,8:1 2200mm

STROng QUalITIES and advanTagES

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applIcaTIOnS

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applIcaTIOnS

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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

seenwhichwassuppliedtotheAmericanNavy.

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.

SpEcIalS

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Veth Propulsion has got its own electronics department in

which the control systems are developed and fabricated.

StateofthearttechnologyisusedlikeaCANbus

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 diesel engine and the alarms

can be read. Besides the standards we can also adjust to the

wishes of the customer. The Veth electronics make driving

and control simple and reliable.

cOnTROlS

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In addition to the Veth-Jet Veth Propulsion has developed a similar

type of bow thruster with a different steering system. The thrust

direction is not diverted by a rotating drum but by big valves

controlled by hydraulic cylinders. This thruster which in many cases

is placed as a stern thruster is built on specification from 1500 hp

to any desired power. The Valve-Jet is extremely suitable for ships

which are connected to a Dynamic Positioning System.

Forsituationsinwhichthereisnospaceforahorizontaldrivingmotoralso

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

when for example applied in a passenger vessel.

vETH-jET v ExEcUTIOn

valvE jET

alTERnaTIvE ExEcUTIOnS

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TheVeth-JetcanalsobedeliveredwithaGondola.Thismainlyisused

for vessels like barges and crane ships. The Veth-Jet is built together

completelywithengineinatailormadeGondola.Alsoattachmentslike

a cooler for the engine, hydraulic tank and control box are mounted and

connected. The installation of the thruster is easy and can be done in a

very limited time.

gOndEl

Installing a 4-K-1800 of 1.700 Hp

Griendweg1PapendrechtTheNetherlands

P.O.Box533350ABPapendrechtTheNetherlands

Phone+31(0)78-6152266Fax+31(0)78-6411169

E-mail:info@veth.net

www.veth.net

S p E E d S y O U R p E R f O R m a n c E