Recently, Optimarin has signed several lucrative contracts to install ballast water treatment systems for some offshore vessels, which are major players in the offshore industry.
Optimarin CEO Paal Sanner pointed out that “these shipowners and shipyards have evaluated the various ballast water systems on the market and finally chose Optimarin for good operational performance and installation flexibility.”
Among them, Siem Offshore and Kleven Verft selected Optimarin to install a ballast water system for the last two of its series of newbuildings. The two ships were laid on the keel in 2008 and a ballast water system must be installed to meet IMO requirements. The new ship was delivered from the shipyard in April this year. Optimarin sales manager Tor?ystein Kleppa added, “These ships do not reserve ballast water system space, but with the flexibility of our system in design and module construction, the shipyard is still able to place system components in different areas of the ship”.
Another offshore giant, STX OSV, has also signed several contracts with Optimarin through a number of Norwegian shipyards; and STX Trading has signed contracts with Optimarin at cooperative shipyards in Vietnam and India. These orders involve the installation of ballast water systems for platform supply vessels and anchor handling towing supply vessels.

Slewing Mechanism and Spare Parts

A slewing mechanism is an essential component of a Tower Crane that allows it to rotate horizontally. It enables the crane to reach different areas of a construction site without having to move the entire structure.

The slewing mechanism typically consists of the following components:

1. Slewing Ring: The slewing ring is a large circular bearing that supports the entire weight of the crane and allows it to rotate. It is usually located at the base of the crane and is designed to withstand heavy loads and provide smooth rotation.

2. Slewing Motor: The slewing motor is responsible for providing the necessary power to rotate the crane. It is connected to the slewing ring and is controlled by the crane operator.

3. Gear Mechanism: The gear mechanism consists of a set of gears that transmit the power from the slewing motor to the slewing ring. It ensures smooth and controlled rotation of the crane.

4. Brake System: The brake system is an important safety feature of the slewing mechanism. It is designed to hold the crane in place and prevent any unintended rotation when the crane is not in operation.

5. Control System: The control system allows the crane operator to control the rotation of the crane. It typically includes joysticks or buttons that enable the operator to start, stop, and control the speed and direction of rotation.

Overall, the slewing mechanism plays a crucial role in the functionality and versatility of a tower crane. It allows the crane to move horizontally, reach different areas of a construction site, and perform various lifting tasks efficiently.


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