
Compact, powerful, and rapidly deployable, it represents the culmination of over two decades of experience working in some of the world’s most extreme underwater environments.
Built for demanding missions including inspection, imaging, object recovery, and data acquisition, the Mariner XL combines high-level performance with streamlined logistics. Its fully containerized configuration — with launch and recovery system, pilot station, ultra-long-range navigation tools, and storage space — fits within just four 20-foot containers, allowing for fast mobilization and deployment from a wide range of vessels, with no need for structural modifications or calibration.
Featuring electric propulsion, ultra-precise inertial and acoustic positioning, user-friendly interfacing, and a maintenance-optimized open-frame design, Mariner XL delivers both versatility and operational excellence. It is equipped with high-performance manipulators and a photogrammetry-ready camera system for ultra-deepwater missions. Ready for any additional payload and sensors, Mariner XL is fitted with dedicated survey pod mux and open 8 channels hydraulic valve pack.
Designed to reduce mobilization costs, carbon footprint, and operational risk, the Mariner XL sets a new standard for deep-sea ROVs — combining innovation, efficiency, and reliability for the most demanding sectors, from energy and science to defense and mineral exploration.

Meet our specialists
Technology alone isn’t enough for deep-sea missions – it requires expert and unwavering commitment.
At Deep Ocean Search, our team is made up of some of the most experienced engineers, ROV pilots, project managers, and oceanographers in the industry. With backgrounds in defense, offshore energy, scientific research, and marine archaeology, they bring precision, problem-solving, and dedication to every mission no matter their complexity.