Decom Engineering has developed an ultra-light Chopsaw which has the ability to transform how contractors approach challenging subsea cutting operations.
The C1-16UL represents the most significant advancement in Decom’s Chopsaw range, specifically engineered to handle the demanding task of cutting flexible risers and mooring chains under tension.
A standout feature is the chopsaw’s weight characteristics – weighing approximately 270kg in air but only 30kg in sea water. The dramatic weight reduction offers unprecedented manoeuvrability with ROVs while maintaining robust cutting capabilities.
Commercial Director Nick McNally said, “We've fundamentally rewritten the chopsaw rulebook. Where traditional subsea cutting relied on heavier, rigid steel frames, we've created a tool that delivers superior performance while being light enough for smaller ROVs to deploy effectively. This eliminates the need for cranes and enables access to challenging locations previously considered inaccessible."
Following extensive testing and trails, the C1-16UL has been successfully deployed offshore on international projects, leading to Decom investing in three additional units which are currently engaged in cutting and flexible riser cutting operations.
McNally added, “Close collaboration with our clients has enabled us to deliver a tool that cuts large mooring chain in a matter of minutes, where previously these operations could take hours per cut using other methods. The efficiency gains and cost savings are transformational for our clients' subsea operations."
“The versatility of the C1-16UL allows for cuts to be made in any orientation, providing unprecedented flexibility in various operational scenarios. This adaptability, combined with its lightweight design, opens up entirely new possibilities for subsea intervention work.
“We identified significant knowledge gaps that couldn't be bridged by existing adaptations of conventional technology. The redesign of the cutting frame using subsea aluminium to reduce weight, the reconfiguration of hydraulic drive systems to enhance efficiency, and the integration of buoyancy control systems are hallmarks of Decom’s innovative approach to offering clients optimal cutting solutions.”
