Submarine base
military base that shelters submarines and their personnel
Coco Solo
Naval Submarine Base Kings Bay
Naval Station Pearl Harbor
Naval Station Norfolk
Fremantle submarine base
Submarine base of Brest
U-Boot-Bunker Bruno
New Suffolk
submarine pen
Dora 1
Dora 2
Leningrad Naval Base
Mare Island Naval Shipyard
Fremantle Fortress
Naval Base Point Loma
Naval Submarine Base New London
Porto Palermo Tunnel