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We put the deep ocean within reach.

Alvin refit to 6500 meters

Learn about the overhaul that will take human occupied vehicle Alvin to greater extremes

 Our Vehicles. Your Tools.

NDSF operates a fleet of underwater vehicles that enables the oceanographic community to explore, sample, and map the deep ocean and to meet the needs of a changing research landscape.


A 3-person research submersible capable of reaching 4500 meters depth and of supporting custom sensors and samplers. The Alvin Team delivers reliability built from nearly 5,000 successful dives.


A time-tested remotely operated vehicle system capable of multi-day missions to 6500 meters. Observers get real-time, HD video and data, as well as physical samples from the seafloor.


A flexible, fully autonomous vehicle rated to 6000 meters that carries a wide and growing array of instruments. The Sentry Team is also skilled at carrying out multi-vehicle missions.

Dive with us

Plan an expedition

From proposal preparation to cruise logistics to data access, we help you execute a successful research mission.

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Use cases

Learn how NDSF vehicles can increase data collection and take better advantage of your time at sea.

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First time user?

Learn how our assets can extend your research to depths you may have never thought possible.

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ASLO Ocean Sciences plenary video featuring Peter Girguis

March 3, 2022

Hear from Harvard University Professor of Organismic and Evolutionary Biology—and frequent NDSF Vehicle User—on what draws him to study the creatures of the deep sea. See if you can spot all three vehicles—Alvin,Jason, and Sentry. Watch here.

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Underway: Alvin syntactic foam repair

February 14, 2022

When Human Occupied Vehicle Alvin’s sea trials came to an unexpected halt last November, engineers on Atlantis and at WHOI wasted no time in setting stage for the sub’s eventual return to the operation.

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Science enabled by NDSF vehicles at Ocean Sciences

February 14, 2022

Learn how data collected from NDSF vehicles is moving science forward. Here are some talks featuring our vehicles at the upcoming 2022 Ocean Sciences Meeting.  28 February CT06 02 12:45pm: C-spec: a deep sea laser spectrometer for measuring the carbon system (dic and pco2), Beckett Colson, MIT-WHOI Joint Program #ROVJason 1 March DS07 02 10am:…

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A hybrid Sentry cruise

February 4, 2022

WHOI geochemist Chris German helped organize virtual planning sessions recently for AUV Sentry dives during the third of three expeditions to study seismicity along the Gofar transform fault in the eastern Pacific. Joining German, who is a co-principal investigator of the 4CAST GOFAR project, in WHOI’s AVAST (Autonomous Vehicles and Sensor Technology) facility for Sentry…

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Video: Live from hydrothermal vents in the Guaymas Basin

November 29, 2021

Watch video from a ROV Jason and AUV Sentry cruise on the R/V Roger Ravelle to the Guaymas Basin the Gulf of California. This cruise was lead by Chief Scientist for Deep Submergence Anna Michel.

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We interrupt this blog

November 16, 2021

I don’t usually do this; I don’t usually write for WHOI in the first person. Because what I have to say is not about me, it’s about the scientists and engineers, their work, and what they help us learn about the ocean. That’s what matters day-to-day and so that’s what I write about as objectively…

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