Floating Drydock YFD-6 (center section) under tow in the Culebra Cut, Panama Canal, circa 1945. To permit passage through the canal locks, Navy SeaBees turned YFD-6’s center section on its side. Add’l info in comments. [926 × 743]

Floating Drydock YFD-6 (center section) under tow in the Culebra Cut, Panama Canal, circa 1945. To permit passage through the canal locks, Navy SeaBees turned YFD-6’s center section on its side. Add’l info in comments. [926 × 743]

Balao-class submarines USS BANG (SS-385) and USS PILOTFISH (SS-386) prior to launch at Portsmouth Navy Yard, New Hampshre, 30 August 1943. [1733×1396]

Balao-class submarines USS BANG (SS-385) and USS PILOTFISH (SS-386) prior to launch at Portsmouth Navy Yard, New Hampshre, 30 August 1943. [1733×1396]

Clemson-class destroyers USS Moody (DD-227) and USS Paul Jones (DD-230) in dry dock at Puget Sound Navy Yard in Bremerton Washington, c1922-23 [10,139 x 5,858]

Clemson-class destroyers USS Moody (DD-227) and USS Paul Jones (DD-230) in dry dock at Puget Sound Navy Yard in Bremerton Washington, c1922-23 [10,139 x 5,858]