The
Acoustically Navigated Geological Underwater Survey (ANGUS) is a deep-towed still-camera sled operated by the
Woods Hole Oceanographic Institute(WHOI) in the early 1970s. It is the first unmanned research vehicle made by WHOI. ANGUS is encased in a large steel frame designed to explore rugged volcanic terrain able to withstand high impact collisions. It is fitted with three
35 mm color cameras with of film. Together its three cameras are able to photograph a strip of the sea floor with a width up to . Attached with each camera are strobe lights allowing the cameras to see the ocean floor from to above. On the bottom of the body is a downward facing
sonar system to send the height of the sled above the ocean floor to the monitoring scientists. It is capable of working in depths up to able to reach roughly 98% of the sea floor. ANGUS can remain in the
deep ocean for work sessions of 12 to 14 hours at a time, taking up to 16,000 photographs in one session. ANGUS was often used to scout locations of interest to later be explored and sampled by other vehicles such as
Argo or
Alvin.