Crossword clues for the word: OPENSEAS The word OPENSEAS has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for OPENSEAS Showing 1 to 8 of 8 results Clue(s) Free waters Oceans free to all Pirate's purview Pirates' domain These are outside a mare clausum They're beyond the harbor Where cruisers cruise Where pirates operate