If I missed getting back to you on Monday, my apologies, I was manning the periscope on the USS Dolphin. Monday August 17th was the 47th Anniversary of the commissioning of the Dolphin in 1968 and by coincidence there I was. A new experimental submarine that the Navy said could reach new depths, deeper than any other. Half the size of any other submarine, it is 152 feet long and only had a crew of 27. Moving through this submarine makes you realize that it was designed with the crew being the last thought, with sleeping spaces crammed in wherever an extra few feet of space existed. No luxury cruising on this ship! Currently at the Maritime Museum of San Diego.