UM3: Underwater Mechanic 3rd Class Petty Officer
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Language: English
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What is the full form of UM3?
UM3 stands for Underwater Mechanic 3rd Class Petty Officer.
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"UM3." Fullformexpand.com, https://www.fullformexpand.com/um3/984019. Accessed 17 Jan. 2026.
Fullformexpand.com, 2026. "UM3." Accessed January 17, 2026. https://www.fullformexpand.com/um3/984019.
"UM3." (n.d.). Fullformexpand.com. Retrieved January 17, 2026, from https://www.fullformexpand.com/um3/984019.
UM3. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/um3/984019 (Accessed: 17 January 2026).
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