Guard Lock 1884917 220639730 2008-06-20T20:58:36Z Eubot 231599 Hatnote formatting, see [[User:Eubot/Hatnote formatting]] {{for|the similarly named astronomical phenomenon|tidal locking}} A '''Guard Lock''' or '''Tide Lock''' is a [[canal lock]] located between a [[canal]] and a body of [[water]] of varying depth such as a [[harbor]] or a [[river]]. When the canal is at a different level than the open body, such a lock allows [[ship]]s and [[boat]]s to pass into and out of the canal regardless of the water level or [[tide]]. {{water-stub}} [[Category:Locks (water transport)]]