How many letters does the top answer for “wrote ship of fools” have?

The most common answer is brant (5 letters).

Crossword clue: wrote ship of fools

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

brant 5 letters wd-fact-v3

small dark geese that breed in the north and migrate southward

author of ship of fools 50% similar → brant

wrote the time ships 50% similar → baxter

wrote the white ship 50% similar → aitmatov