Boats of the United States Navy, Navships 250-452 – 1967. Letter of Promulgation by Rear Admiral, USN Edward J. Boats of the United States Navy. NAVSHIPS 250-452, 1967, is a Navy catalog of boat...
The mechanical bathythermograph was invented as a tool to understand the temperature layers of the ocean. The torpedo-shaped device was attached to a long cord and dropped off the side of a boat. As i...
