Consult Jastram GmbH & Co. KG’s Jastram Model H Helm Pumps brochure on NauticExpo. All other pumps have a 1/2″ NC stainless steel wheel bolt. HELM. Nov 23, This Pin was discovered by Meg Jastran. Discover (and save!) your own Pins on Pinterest. SILVER. The Restless Metal. ROY W. JASTRAM. University of Califomia, Berkeley. A RONALD PRESS PUBLICATION. JOHN WILEY & SONS, New York.

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Classification certificates for any classification society can be delivered for the whole thruster system. Jastram Digital Wheel DW.

Jastram S Model Actuators are specifically certified for use in commercial marine hydraulic steering systems. With worldwide representation and an in house ability to communicate in twenty-one languages, customers can be assured that any question will be jasttan quickly.

Powerunits are available to meet specific design challenges or requirements of the vessel owner, naval architects or shipyard.

Under power steering, the steering wheel is turned producing a rudder command signal. Jastram T-Ram Steering Systems are exceptionally tough and reliable. The two main features of the Digital Wheel over the standard electric wheel are:. The Jastraj is built to resist water and damage caused by vibrations from rough seas and mechanical systems. Jastram Engineering is well known for its commitment to quality, from initial design continuing through the manufacturing process to system commissioning and after sales service.

The RFU is built with cast aluminum meal stainless steel and designed for heavy duty use in both commercial and pleasure crafts.

Transverse Thrusters

Jastram are specialised in fixed pitch propeller FPP thrusters which require minimal servicing due to their solidity and durability. In the event of a power failure the digital helm seamlessly transfers to manual hydraulic steering.

Digital Wheels are unique input devices which provide full follow-up digital electric control. Matching of ram capacity to rudder torque provides jaatran steering at the least cost.


The RFU features a high quality potentiometer with heavy duty gears, and a built in electronic driver board. Steel Model Cylinders S series.

The Largest of the Indicators is the overhead three faced panoramic indicator. Galvanic cathodic protection CP is calculated and installed to protect the system for up to 5 years.

Their rugged steel construction includes many standard features resulting from our long experience in the manufacture, operation and service of steering systems. When the steering lever is moved to the desired rudder angle, the rudder will follow-up to the position requested b the lever.

When the steering lever is moved to the desired rudder angle, the rudder will follow-up. We design and manufacture marine steering systems to the highest quality standards. Jastram Engineering is built on the understanding of how critical steering is to the operation of any vessel. The ability to generate torque increases with increasing rudder angle. The stainless steel ring in the propeller tip region protects the tunnel against cavitation damage.

This makes Jastram the perfect choice for new installations, retrofit of existing systems or for replacement of worn out parts. Only two torque struts arm are required to connect the T-ram to the vessels hull structure.

Supertankers and cruise ships have maritime pilots who act as valets for the giant vessels in ports The rudder then follows up to the position requested by the wheel.

Designed for continuous heavy duty operations for the marine environment. When taking over control of the steering system the Digital wheel takes over at the present position of the rudder. The two main features of the Digital Wheel over the standard electric wheel are: Impressed current cathodic protection ICCP instead of anodes for longer life and reduced resistance in the tunnel.

Vertical or horizontal mounting or any other installations for electric, hydraulic or diesel engine drives are available.


The Jastram Lever Controller provides full follow-up way dependent electric control.

The HFU is a state-of-the-art electro-hydraulic steering system, providing full follow-up power steering with unmatched smoothness, quietness and accuracy for small to medium size vessels. Alignment with shims and preparation of flat mounting beds are not necessary.

All moving parts are encased in a greased filled, heavy ductile iron housing and are protected from corrosion and mechanical damage.

Up to five indicators can be used with a mixture of forward and reverse scale meters. Jastram steering systems can be offered with an Engine driven type of unit which consists of a pump that couples onto the existing main engines and provide flow to a custom wall mount reservoir assembly. This set-up would be used in lieu of a Hydraulic Power unit set-up. It is designed for heavy duty use and requires very little maintenance as all moving parts are encased in grease-filled, heavy duty housing.

This motivating force is why Jastram is compelled to design and manufacture to the highest quality. DW shaft dimensions are: The RFU features a high quality, long life potentiometer with heavy jasstran gears.

Transverse Thrusters

Exceptional Performance We design and manufacture marine steering systems to the highest quality standards. All electronic circuitry necessary to develop rudder feedback signal and rudder angle signal is contained within the RFU Under emergency manual hydraulic steering the numbers of turns depends on the size of the actuators. These are stand alone systems comprised of three main components: Jastram transverse thrusters are made from high-grade certified materials and are designed individually according to the given installation conditions.