128353 ⎘
Locks or dry-docks ; Shaft locks, i.e. locks of which one front side is formed by a solid wall with an opening in the lower part through which the ships pass
Sub-classes:CONSTRUCTION METHOD FOR RECONSTRUCTING AND EXPANDING SHIP LOCK IN SITU
#2BOAT LIFT STABILIZATION AND LOCKING APPARATUS
#3COMPLEX OCEAN POWER SYSTEM COMBINING SLUICE POWER AND OCEAN CURRENT POWER
#4Mechanical ship lift