cast, drop, lower
The ship cast anchor in the bay.
We dropped anchor off a small island.

raise, weigh
We raised the anchor and set sail.
We weighed anchor next morning and sailed south.

lie at, ride at
The ship lay at anchor in the bay.

at anchor
the ships at anchor in the bay

firmly, securely, well
The crane is securely anchored at two points.

to
The ropes were anchored to the rocks.

Anchor is used with these nouns as the subject:
ship

Anchor is used with these nouns as the object:
boat, vessel