Fleet
An organization of ships, aircraft, Marine forces, and shore-based fleet activities all under a commander who may exercise operational as well as administrative control. [U. S. Department of Defense, p. 88].
a group of military ships that are controlled by one leader;
all of a country's military ships;
a group of ships or vehicles that move or work together or that are controlled or owned by one company [Britannica Dictionary].
Fleet
some warships under a single command;
specifically: an organization of ships and aircraft under the command of a flag officer;
group;
especially: a group (as of ships, planes, or trucks) operated under unified control [Merriam-Webster Online Dictionary].
U. S. Department of Defense. (2017). Department of Defense Dictionary of Military and Associated Terms - As Amended Through 15 February 2016 - (Joint Publication 1-02). New York: Skyhorse
Wing. Merriam-Webster Online Dictionary. Retrieved from: https://www.merriam-webster.com/dictionary/wing
Fleet. The Britannica Dictionary. Retrieved from: https://www.britannica.com/dictionary/fleet