A vertical signboard displays nautical flags and names, including "Alpha," "Bravo," "Charlie," "Delta," "Echo," "Foxtrot," "Golf," "Hotel," "India," "Victor," "X-Ray," "Kilo," "Lima," "Mike," "M," "I AM STOPPED," "I REQUIRE A TUG," "I AM ON FIRE," "You SHOULD STOP," "YIELD," "You MUST DRAGGING ANCHOR," and "You MUST STOP."