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Platform from the
above

The solutions engineered focused on maximum 1970’s in their nitrogen complex. The main item that
precision and safety to ensure uninterrupted operations. needed replacing was a reactor vessel, which assists in
A team of Mammoet professionals deployed a hydraulic creating urea to create fertilizer. Problem: the new
skidding system controlled by specially designed vessel was made in Austria and the client required the
software. Built-in vertical jacks lifted the module off its most efficient way to get it installed at its final destination.
construction supports where it was then skidded along So, four years before the actual exchange they engaged
9 tracks, each 133 m long. Once on quayside, the Mammoet. The early involvement enabled us to deliver
module was slowly skidded across 9 bridges and onto and execute a comprehensive plan that optimized the
the hull. overall approach that identified and seized several time
To offset Karimun’s wide tidal variations and keep the saving opportunities.
hull level with the quayside during load-out, Mammoet Mammoet orchestrated all transport modalities;
engineered two computer-controlled ballasting barging, ocean transport, rail transport, jack & slide,
systems. The first capable of monitoring and offsetting and finally SPMT transport. Mammoet ensured these
the tidal variations; the second managing the balancing modalities were well-aligned to one another in order to
of the hull. To successfully load-out within Karimun’s realize the most efficient logistics possible. To
tight tidal time frames required employing a pumping accommodate transport of the vessel Mammoet
system capable of displacing 56,000 m of water per designed shipping saddles that were optimal for ocean
3
hour. With no room for error, a crew of Mammoet and rail. The saddles eliminated the need to re-secure Ring crane installation
professionals confidently inched the massive module the vessel at each transloading point. This helped save of-the final column
onto the awaiting hull.
The Jangkrik project is a benchmark of precision
engineering and proof that even 14,273 ton integrated
topside modules can be assembled and installed in one
go. By stretching the limits of modular construction and
enabling faster, safer and more controlled construction
at a larger scale, Mammoet helped save their partners
a significant amount of time and helped Indonesia fuel
its future growth.

… and doing factory-to-

foundation too

A fertilizer company in Southern Alberta, Canada, was
updating and replacing aged components from the

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