Rig for divers
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.