Subsequent periods of subsidence and submergence deposited clays and flints. They were observed using the deep submergence vehicle ALVIN from the Woods Hole Oceanographic Institution. It contains land shells, and hence cannot be attributed to marine or lacustrine submergence. The longest documented submergence of an Amazonian manatee in captivity is 14 minutes. In 2017, the ship completed an extensive retrofitting to become a deep submergence research vessel. However airlift wells must be much deeper than the water table to allow for submergence. Subsequent litigation further defined the contours of "vote dilution through submergence" claims. Subsequent litigation further defined the contours of these "vote dilution through submergence" claims. "Tinro ll" submersible Captain Mikhail Igorevich Girs' diary&colon; Submergence 10 October. It is equipped with a deep submergence rescue vehicle. She carries the deep submergence rescue vehicle "Deep Search and Rescue Six" (DSAR-6). The AGC was also used for the United States Navy's Deep Submergence Rescue Vehicle. These boats are equipped to accept a Deep Submergence Rescue Vehicle (DSRV). There are three major theories&colon; offshore bar, spit accretion, and submergence. The nostrils are closed during submergence.