Human Occupied Vehicle (HOV) Alvin is part of the National Deep Submergence Facility (NDSF). Alvin enables in-situ data collection and observation by two scientists to depths reaching 4,500 meters, during dives lasting up to ten hours.
Commissioned in 1964 as one of the world’s first deep-ocean submersibles, Alvin has remained state-of-the-art as a result of numerous overhauls and upgrades made over its lifetime. The most recent, completed in 2013, saw the installation of a new, larger personnel sphere with a more ergonomic interior; improved visibility and overlapping fields of view; longer bottoms times; new lighting and high-definition imaging systems; improved sensors, data acquisition and download speed. It also doubled the science basket payload, and improved the command-and-control system allowing greater speed, range and maneuverability.
With seven reversible thrusters, it can hover in the water, maneuver over rugged topography, or rest on the sea floor. It can collect data throughout the water column, produce a variety of maps and perform photographic surveys. Alvin also has two robotic arms that can manipulate instruments, obtain samples, and its basket can be reconfigured daily based on the needs of the upcoming dive.
Currently rated to 4,500m, which gives researchers in-person access to about 2/3 of the ocean floor, the most recent upgrade increased the depth rating of many of the vehicle’s systems, making it just steps away from having a depth rating of 6,500m, or approximately 98% of the seafloor. Alvin is a proven and reliable platform capable of diving for up to 30 days in a row before requiring a single scheduled maintenance day. Recent collaborations with autonomous vehicles such as Sentry have proven extremely beneficial, allowing PIs to visit promising sites to collect samples and data in person within hours of their being discovered, and UNOLs driven technological advances have improved the ability for scientific outreach and collaboration via telepresence
Alvin is named for Allyn Vine, a WHOI engineer and geophysicist who helped pioneer deep submergence research and technology.
Duke University Stories
For two weeks last summer, a pair of marine scientists joined the venerated submarine to explore the ocean shelf off Massachusetts
Journal of Ocean Technology
An Advanced Platform for Direct Deep Sea Observation and Research
The multi-million dollar upgrades to the storied deep-diving research submersible Alvin will be the focus of a press conference on December 15 at the 2010 American Geophysical Union meeting in San Francisco, CA. Upgrade Project Principal Investigator Susan Humphris, a WHOI geologist, will provide details of the improvements to the sub’s capabilities and its value to the U.S. scientific community.
Lockheed Martin recently completed a Preliminary Design Review for the Replacement Human Occupied Vehicle (RHOV), a next generation three-person Deep Submergence Vehicle that will be used by the U.S. scientific community.
WHOI has awarded Lockheed Martin a $2.8 million contract for the initial design of the Replacement Human Occupied Vehicle (RHOV), a next generation three-person Deep Submergence Vehicle (DSV) that will be used by the U.S. scientific community. The contract has an option for subsequent construction of the RHOV once the initial design is completed and the project is approved to move forward.
Listen to the first call between ocean explorers and astronauts.
WHOI in the News
Quotes Mark Abbott
Piece and accompanying video highlights the Alvin sub and the discovery of hydrothermal vent life
mentions HOV Alvin
features OASIS Expedition mentions HOV Alvin, AUV Sentry and MISO TowCam
Dive Deeper: Alvin Takes You There
Explore the sub, meet the scientists, and learn how Alvinenables ocean exploration and research
Special Multimedia Feature
Alvin Interactive Guide
The deep diving submersible Alvinhelped to turn a sunless, freezing marine world into a new frontier.
Alvin Around the World
Alvin Dive Sites (1988 to present)
See where Alvin has been and what it has found. (Requires Google Earth)