How many letters does the top answer for “a flatbottom boat for carrying heavy loads (especially on canals)” have?

The most common answer is barge (5 letters).

Crossword clue: a flatbottom boat for carrying heavy loads (especially on canals)

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

barge 5 letters wn-def

a flatbottom boat for carrying heavy loads (especially on canals)

flatboat 8 letters wn-def

a flatbottom boat for carrying heavy loads (especially on canals)

hoy 3 letters wn-def

a flatbottom boat for carrying heavy loads (especially on canals)

lighter 7 letters wn-def

a flatbottom boat for carrying heavy loads (especially on canals)