go below
phr. v..phr. v.. to move from the deck of a ship to the rooms or areas underneath it.
phr. v.. to descend from the upper deck of a vessel to the lower decks or cabins; primarily used in nautical contexts.
The captain told the crew to go below during the storm.
As the sun began to set, the passengers decided to go below to prepare for dinner.
The sailors were ordered to go below and secure the cargo before the heavy swells reached the ship's hull.
usually functions as an intransitive verb in a maritime setting.
anchor this in a nautical context to help students remember it; contrast with 'go downstairs' which is used for buildings.
He went to below to find his cabin.He went below to find his cabin.'below' acts as an adverb of direction here, so the preposition 'to' is unnecessary and incorrect.