Types and Features

Our highly diversified self-unloader fleet features a wide range of technologies and solutions that are selected to correspond to customer specifications and operational conditions. The complete range of CSL self-unloading solutions is available to customers worldwide.

Gravity-fed self-unloaders with hoppered holds and gravity gates are the mainstay of CSL operations around the world. These vessels are suitable for granular free-flowing cargoes. As the name implies, these vessels use gravity to release cargo through gates located at the bottom of the vessel's... Read more »
Well-suited to self-load and carry out off-shore transhipment operations, hybrid self-unloading vessels use a mechanism, usually grabs, to raise the cargo and deposit it into a hopper onboard the vessel. The cargo is then carried by a series of conveyors on deck to the boom for a single point... Read more »
The bucket lift system features a loop of connected buckets on an enclosed moveable arm deployed in each cargo hold that reaches throughout the hold to scoop and lift the cargo to above deck. The cargo is then deposited into a hopper for transfer to a conveyor system on deck. The deck conveyor... Read more »
Scraper-reclaimer vessels are well-suited to handle granular materials such as gypsum, as well as free-flowing powder materials such as cement and fly-ash. They can also handle more cohesive, stickier materials. The scraper-reclaimer unloading system consists of a hoistable scraper system in the... Read more »
Pneumatic self-unloading vessels are built specifically to handle powder cargoes such as cement. Using lean-phase or dense-phase pneumatic conveying systems, they operate using compressed air to move the cargo through piping to load and unload. Both the loading and unloading processes are... Read more »
The excavator self-unloading system features an onboard mechanical shovel fitted to a deck-mounted mobile hopper that transits the length of the cargo hold on rails. The shovel digs cargo from the ship's holds, placing it into the hopper where it funnels onto a discharge boom belt conveyor. The... Read more »
Self-unloaders equipped with sub-sea rock installation (SRI) technology are typically used to accurately install rock in water depths of up to 2,200 metres. They can also be used for such activities as cable installation for offshore wind farms and side stone dumping. Self-unloaders with sub-sea... Read more »