Before revision: The Acoustically Navigated Geological Underwater Survey (ANGUS) wass a deep-towed still-camera sled operated by the Woods Hole Oceanographic Institute (WHOI) in the early 1970s.
After revision: The Acoustically Navigated Geological Underwater Survey (ANGUS) was a deep-towed still-camera sled operated by the Woods Hole Oceanographic Institute (WHOI) in the early 1970s.