How many letters does the top answer for “an enclosed compartment from which a vessel can be navigated” have?

The most common answer is pilothouse (10 letters).

Crossword clue: an enclosed compartment from which a vessel can be navigated

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

pilothouse 10 letters wn-def

an enclosed compartment from which a vessel can be navigated

wheelhouse 10 letters wn-def

an enclosed compartment from which a vessel can be navigated