Different technologies for transferring vessels on-shore are in existence. Generally, the rail applications can be identified, starting with the process of elevating the vessel out of the water, which could be by a Shiplift or a Slipway. When the vessels are transferred to the land the carriages are moved using either a single or dual level system.
Those different applications within the shipyard require different rail solutions.
The Marine design covers the Civil design of the various areas, which includes individual load conditions and may involve civil expansion joints to accommodate thermal expansion. Rail systems vary significantly according to the loads and the environment.
Elevating the ship
Shiplifts: The lift platforms are normally articulated to allow for deflection under load. The rail system is designed to suit the projected deflection and so it is typically shimmed to the design unloaded position, and secured with hard clamps on welded studs. Under load the platform deflects, and the rail system is designed to ensure a smooth transfer to the landside system.
Slipways: Rails are installed at a slope and care should be given to longitudinal rail movement due to gravitational and breaking forces. Rails can be installed on concrete foundation, steel girder, or a combination of both. Different solutions are available depending on the foundation, and special attention should be paid to corrosion protection in the tidal area.
Transporting the ship
The boats are transported, on trolleys or cradles, to or from construction and maintenance berths and buildings. This zone can be built in a single or double level, each with its specific design for the rail system. Special attention should be paid to the rail transition areas between the shiplift, carriages and the dry berths.
Single Level Transfer: The normal single level sytem is where rails are installed at ground level with cross overs to provide system that allows the transfer of carriages from sea to land. and then at 90 degrees. This means the vessels can be moved around the yard with maximum flexibility use.
Dual Level Transfer: In some yards the transfer is carried out at two levels, where the vessels are transferred to specific dry berths. These could be washdown, painting or welding areas.
Gantrex solutions increase the productivity of the shipyard cranes thanks to the reliability of the crane rail solutions proposed. They involve the latest technology in crane and specialty rail track components and services
Turn-key crane rail installations
Our skills in drilling, leveling, grouting, aligning and rail welding works are praised.
Our installation and inspection teams are motivated and reliable.
Gantrex’ RailLok™ design ensures full and tight contact between the upper component of the crane rail clip and the rail foot. Coupled with the self-locking wedge, it keeps the tightened clip bolts in tension.
The RailLok™ crane rail pad’s specific grooves and edge design prevents damage or movement of the pads resultant from rail twisting and the bow wave effect, almost completely eliminating the risk of premature pad weakening ensuing from dirt ingress.
Where the most appropriate technical solution is a hard fixing, the Gantrex® shipyard clamps will accept up to 120 kN side load.
Gantrex’ tailor-made range of products and services is worldwide available through more than 300 real Gantrex crane rail specialists, ready to be on track, with you.
Shiplift and single-level transfer area.
Simplex Infrastructures Ltd’s “Modernization of GSL Ph 2 & 3”, India
Project Name: Simplex Infrastructures Ltd’s “Modernization of GSL Ph 2 & 3”
Location: Goa Shipyard, Vasco, Goa
Description: Supply and installation of ISCR100 rails for Ship Repair facility
UM Gölcük Shipyard, Turkey
Gantrex supplied over 2,000m of rails for different areas in the Gölcük Shipyard in Turkey.
Dubai Maritime City, UAE
The development of Dubai Maritime City involved construciton of one of the world's largest shipyard facilities. The project included 2 shiplifts and a massive double level transfer yard. Gantrex collaborated with Belgian civil contractor group BESIX and supplied a total of 40,000m of rails including a full continuous support system. The entire project exceeded 5 million USD in value and was successfully completed in 2006.
Zamil Shipyard Dammam, Saudi Arabia
Gantrex supplied and installed on a turnkey basis a total of 5,000 meter of rails for Zamil Offshore Co in Dammam, Saudi Arabia. The project was started in 2013 and was completed successfully by 2014.
Damen Shipyards Sharjah, UAE
Gantrex’ UAE-based rail installation team has brought another project to a successful end. Thanks to an excellent cooperation with the Main Contractor and a meticulous planning, we are proud to have torqued the last rail clip on the ‘Damen Shipyard Sharjah’ project.
The entire project, which included a turnkey installation of 9500 meters of rails in a reasonably short time span of 5 months, was completed in due time without any major complications or incidents. Gantrex was responsible for the entire logistical operation from port to site, as well as a full turn-key rail installation including drilling, leveling, grouting, aligning and rail welding works. Additional to the civil works, Gantrex also completed the 500 meter installation of rails on the Rolls Royce shiplift platform as well as 400 meter on the side transfer carriage.
We would like to thank the entire team of DBB for their excellent cooperation on site, and look forward to another opportunity to work together. Thanks!