Name: Steve Allen Location: Toronto, Ontario Question: What is the range for the ship and sub? How long can they stay at sea before going into port to restock/refuel etc.? Capt. Ralph van Hoek: The ship has a range of 6,000 nautical miles and can stay at sea for 1 month, depending on conditions. The sub can dive to a maximum of 3000' and operates for 3.5 hours "deck to deck" (that is, from launch to recovery).