We have three Class II Open Manifold Bells and a Closed Bell, Class I which mates to two DDC's . We use it for TUP diving. There is a Transfer Lock 1,000 ft rated and a 8 ft Dia x 22 Ft long 6-Man SAT DDC with 6 bunks, toilet, washbasin, shower in the Entrance Lock. other DDC's in 20 ft ISO Conexes. Hydraulic Power Units, Hydraulic Tools, Hydraulic Hose Reels, Compressors, HP air Cascades. Contact Will Hux. [email protected]