Brocco Cutting Underwater is a specialized technique used in marine construction and demolition to sever or trim underwater structures, such as steel or concrete components, using a brocco cutter, a type of hydraulic or mechanical cutting tool.

This method is particularly effective for precise cutting in challenging underwater environments where traditional cutting techniques are impractical. Brocco cutting minimizes vibrations and disturbances, making it ideal for delicate operations near sensitive marine ecosystems or existing structures.

This technique is commonly employed in the maintenance and refurbishment of underwater infrastructure, such as bridges, pipelines, and offshore platforms.

HDSA Group has a number of very skilled Underwater Thermal lance (Broco Cutter) operators. This is one method of cutting steel underwater quickly.