Canal lock
device · 984 · Middle Ages
A chamber with gates for moving ships between water levels.
What it is made of
- Valve — has part. Sluice gates.
Principles and materials it uses
- Gravity flow — uses. The chamber fills and empties by gravity.
- Wood — is made of. The lock gates are wooden.
- Stone — is made of. The walls of the chamber are stone.
Where it is used
- Canal — is part of. Locks.
- Panama Canal — is part of. Locks.