COMSUBPAC recently released several images of things you don’t usually see: Dry Deck Shelter and submerged diver operations on a Virginia-class hunter-killer submarine.
The Navy only has about a half-dozen of the 38-foot DDSs (2-3 in each of the SDV Teams), which were put into service in the 1980s to replace the capability lost when the Pentagon scrapped the old transport submarines (see USS Perch) of the Vietnam-era. Boats such as Perch could put ashore platoon-sized elements of Marines or UDTs/SEALs via small boats and do so in relatively (for the blue water Navy) shallow water.
While usually older boats operate DDSs– for instance converted Tridents turned into SSGNs– 10 of Virginias are believed equipped to operate DDSs, which can support a SEAL platoon (16 operators) for dive or small boat (CRRC) operations.
Previous to these images, some of the last good quality released images of DDS shelters in use on DVIDS date to earlier this year and, beyond that to 2008, both on converted SSGNs.