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)]]