Mobile Subsea Launch and Recovery System (Ms.Lars)

Operated similarly to a ship dry dock, Ms.Lars is ideally suited to launching and recovering manned submersibles and shock sensitive equipment such as environmental sensors or electronic data collection devices. During operations, Ms.Lars is submerged by flooding its flotation tanks with water for a controlled descent to depths of 5 to 10 meters to avoid any surface turbulence. Once submerged below the effects of surface waves, Ms.Lars remains coupled to surface floatation with a patented system to provide a stable underwater platform from which manned submersibles such as Cyclops 1 can lift off of and then return to after each dive. At the conclusion of the dive, the submersible lands on the submerged Ms.Lars and the entire system is brought to the surface in approximately two minutes by filling the ballast tanks with air.

"The benefits of Ms.Lars are that it is extremely mobile, and it can be cost-effectively deployed because it does not require a large ship with a man-rated crane or A-frame to launch and then retrieve one of our manned submersibles. This allows us to work in remote areas using smaller, locally available commercial ships at a much lower cost." – Stockton Rush

Ms.Lars was jointly developed by OceanGate and the University of Washington Applied Physics Laboratory and was designed to be primarily constructed of commercially available off-the-shelf components.

“Submerged launch and recovery systems are not new. The Hawaii Undersea Research Lab has used a similar system since the late 1980s,” said Dave Dyer, APL Principal Engineer. “What we’ve done is modify the concept to eliminate the need for scuba divers, and also make Ms.Lars modular so it is mobile and not tied to a fixed geographic location.”

During the Flower Garden Banks Expedition, OceanGate deployed Ms.Lars at a dive site over 100 miles offshore and performed multiple successful launch cycles, including a Cyclops 1 deep dive to a depth of 457 meters (1500 feet).

Ms.Lars provides a lifting capacity of 20,000 lbs. The vessel is 35 feet long, 15 feet wide, and draws 2 feet when fully loaded.

For more information, contact:

Joel Perry *

Ms.Lars descent and ascent is controlled remotely from surface support vessel.

Cyclops on Ms.Lars preparing for lift off.

Our Subs Are Used For:

Site Survey and Inspection 

Conduct continuous and extensive site surveys to inspect underwater infrastructure, wrecks or sensitive environmental habitats without resurfacing.

Research and Data Collection 

Collect research data in real-time with first-hand views, onboard collaboration and the flexibility to modify your mission profile while still on site.

Film and Media Production 

The ultimate stage to film the treasures of the deep in a highly adaptive vessel designed to illuminate the depths, capture vibrant images and document natural habitat.

Deep Sea Testing 

A unique underwater testing platform to conduct a wide array of experiments to test equipment or expedite sensitive research in deep ocean environments.