Title: DDS (Dry Deck Shelter)
KORNET-E - July 18, 2007 01:23 PM (GMT)
The Los Angeles-class attack submarine USS Dallas (SSN 700) departs Souda Bay harbor.
DDS Dry Deck Shelter
A Dry Deck Shelter (DDS) is a removable module that can be attached to a submarine to allow divers easy exit and entrance while the boat is submerged. The host submarine must be specially modified to accommodate the DDS, with the appropriate mating hatch configuration, electrical connections, and piping for ventilation, divers' air, and draining water.
The United States Navy's DDSs are 11.6 meters (38 feet) long by 2.7 meters (9 feet) high and wide, add about 30 tons to its host submarine's submerged displacement, can be transported by trucks or C-5 Galaxy aircraft, and require one to three days to install and test. They have three HY-80 steel sections within the outer glass-reinforced plastic (GRP) fairing: a spherical hyperbaric chamber at the forward end to treat injured divers, a smaller spherical transfer trunk, and a cylindrical hangar with elliptical ends to house a Swimmer Delivery Vehicle (SDV) or 20 SEALs with four Combat Rubber Raiding Craft (CRRC).
There are currently six portable Dry Deck Shelters in use by the USN, the first one built by the Electric Boat Corporation. The first, designated DDS-01S ("S" for the side to which the hangar outer door opens), was completed in 1982. The remaining five, DDS-02P ("P" for port opening), -03P, -04S, -05S, and -06P, were built between 1987 and 1991 and were built by Newport News Shipbuilding. They have expected useful lives of about 40 years each.
-REST IN PIECES-
DDS Dry Deck Shelter
A Dry Deck Shelter (DDS) is a removable module that can be attached to a submarine to allow divers easy exit and entrance while the boat is submerged. The host submarine must be specially modified to accommodate the DDS, with the appropriate mating hatch configuration, electrical connections, and piping for ventilation, divers' air, and draining water.
The United States Navy's DDSs are 11.6 meters (38 feet) long by 2.7 meters (9 feet) high and wide, add about 30 tons to its host submarine's submerged displacement, can be transported by trucks or C-5 Galaxy aircraft, and require one to three days to install and test. They have three HY-80 steel sections within the outer glass-reinforced plastic (GRP) fairing: a spherical hyperbaric chamber at the forward end to treat injured divers, a smaller spherical transfer trunk, and a cylindrical hangar with elliptical ends to house a Swimmer Delivery Vehicle (SDV) or 20 SEALs with four Combat Rubber Raiding Craft (CRRC).
There are currently six portable Dry Deck Shelters in use by the USN, the first one built by the Electric Boat Corporation. The first, designated DDS-01S ("S" for the side to which the hangar outer door opens), was completed in 1982. The remaining five, DDS-02P ("P" for port opening), -03P, -04S, -05S, and -06P, were built between 1987 and 1991 and were built by Newport News Shipbuilding. They have expected useful lives of about 40 years each.
-REST IN PIECES-