Leading Sentry to Water

The autonomous underwater vehicle (AUV) Sentry can carry advanced scientific equipment and work down to 6,000 meters deep in the ocean, but it still needs help getting in the water. Lead mechanical engineer Justin Fujii pulls the suspended 2,750-pound robotic vehicle out over the test pool in WHOI’s Iselin Marine Facility before overseeing ballast tests. The test results help the Sentry team ensure that the vehicle uses power efficiently, allowing longer dives and more data collection. (Photo by Ken Kostel, Woods Hole Oceanographic Institution)