How highly effective is The US Seventh Fleet. The Seventh Fleet is a numbered fleet (a army formation) of america Navy. It’s headquartered at U.S. Fleet Actions Yokosuka, in Yokosuka, Kanagawa Prefecture, Japan. It’s a part of america Pacific Fleet. At current, it’s the largest of the forward-deployed U.S. fleets, with 60 to 70 ships, 300 plane and 40,000 Navy and Marine Corps personnel.Its principal duties are to supply joint command in pure catastrophe or army operations and operational command of all naval forces within the area.
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