Crossword Genius

Boat that was about 510 feet long (3)

Ross

I believe the answer is:

ark

(Other definitions for ark that I've seen before include "Flood vessel; box (arch.)" , "Animal rescue transport" , "Boat built to withstand great flood" , "See 18 Down" , "Animal transporter" .)

I've seen this clue in the Universal.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.