How many letters does the top answer for “shift from one side of the ship to the other” have?

The most common answer is gybe (4 letters).

Crossword clue: shift from one side of the ship to the other

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

gybe 4 letters wn-def

shift from one side of the ship to the other

jib 3 letters wn-def

any triangular fore-and-aft sail (set forward of the foremast)

jibe 4 letters wn-def

an aggressive remark directed at a person like a missile and intended to have a telling effect