The device is called a windlass.
Panama
Locks are built to raise and lower ships , also to control water levels, so there are some locks that also have dams nearby.
The locks
Gravity causes the ships iron anchor to sink to the ocean.
Ahole
unknown
seaport
harbor
throw the anchor out stupid
Yes all Naval ships raise their anchors when the ship is going to move. "Anchor's Away' As soon as the anchor breaks water as it is being raised the exact time is recorded in the ships log and the flag is transefered from the stern of the ship to the halyard over the superstructure of the ship. This pretains to all U.S. Naval vessels.
The links mean nothing. Rope is sometimes portrayed. Either where used to anchor ships in the age of sail.
Harbor