AN island is defended by a battery of coastal guns placed at the eastern most part of the island, and has a maximum range of 5 nautical miles. A ship is sailing due north at 24 hours along a course that will bring it within 4 nautical miles of the guns. The ship is approaching a position where it will be 5 nautical miles from the guns. Assuming the ship maintains its source and speed, how long will the ship be in range of the battery