Jason (ROV)

Jason (ROV). Jason is a remotely operated vehicle (ROV) designed and operated by the Woods Hole Oceanographic Institution (WHOI) for deep-sea scientific exploration. As a key asset of the U.S. Navy-owned Deep Submergence Vehicle program, it has conducted hundreds of dives to investigate hydrothermal vents, shipwrecks, and seamounts. The vehicle is typically deployed from the research vessels RV ''Atlantis'' and RV ''Roger Revelle'' and works in tandem with the autonomous mapping vehicle Sentry.

Development and design

The development of Jason was led by engineers at the Woods Hole Oceanographic Institution's Deep Submergence Laboratory, building upon experience with earlier vehicles like DSV ''Alvin'' and ROV ''Argo''. Its design emphasizes modularity and reliability for sustained operations at extreme depths, utilizing a tether management system connected to a launch and recovery system on the support ship. The vehicle's frame is constructed from syntactic foam and titanium for buoyancy and strength, housing an array of HDTV cameras, fiber-optic telemetry, and powerful LED lights. Key design partners included the Office of Naval Research and the National Science Foundation, which funded its creation for the national academic research fleet.

Operational history

Since its commissioning, Jason has been continuously operated by the Woods Hole Oceanographic Institution for the University-National Oceanographic Laboratory System. It has supported major projects for institutions like the National Oceanic and Atmospheric Administration and the Monterey Bay Aquarium Research Institute. The ROV's operational tempo includes multiple annual cruises, often in the Pacific Ocean, Atlantic Ocean, and Mediterranean Sea, with downtime dedicated to maintenance and upgrades at WHOI's facilities in Massachusetts. Its service history is marked by high reliability, enabling long-term time-series studies at deep-sea sites such as the Endeavour Hydrothermal Vents and the Lost City Hydrothermal Field.

Technical specifications

Jason is rated for depths of 6,500 meters, allowing access to over 99% of the seafloor. Propulsion is provided by a series of thrusters, granting precise maneuverability in strong currents. Its sensor suite includes scanning sonar, a CTD rosette, and magnetometers for environmental measurement. The vehicle is equipped with two seven-function manipulator arms for delicate sampling and tool use, and can carry various payloads like push core samplers and bioboxes. Power and real-time data are delivered via a reinforced, fiber-optic-based umbilical cable from the surface vessel.

Scientific contributions

Jason has been instrumental in discoveries across marine geology, biology, and ocean chemistry. It enabled the first detailed time-series studies of hydrothermal vent ecosystems, observing changes in species like giant tube worms and vent crabs. The vehicle collected critical samples that led to the identification of novel extremophile microorganisms and archaea. Its work has advanced understanding of plate tectonics at mid-ocean ridges and subduction zones, and it has provided key data for climate studies by retrieving sediment cores and studying ocean acidification impacts on deep-sea coral communities.

Notable expeditions

A flagship expedition was the 1985 discovery and 1986 imaging of the wreck of the ''RMS Titanic'', conducted with the sled ''Argo'' and DSV ''Alvin''. Jason played a central role in the Ocean Drilling Program's investigations of the Juan de Fuca Ridge and the Costa Rica Rift. In 2010, it was deployed to the Gulf of Mexico to assess the ''Deepwater Horizon'' oil spill impact on deep-sea communities. Other significant missions include exploring the Kermadec Trench with National Geographic, and annual visits to the Hawaiian Undersea Research Laboratory's Necker Ridge study sites.

Category:Remotely operated underwater vehicles Category:Woods Hole Oceanographic Institution Category:Deep-sea exploration