UM1: Underwater Mechanic 1st Class Petty Officer
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Language: English
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What is the full form of UM1?
UM1 stands for Underwater Mechanic 1st Class Petty Officer.
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"UM1." Fullformexpand.com, https://www.fullformexpand.com/um1/984018. Accessed 26 Nov. 2025.
Fullformexpand.com, 2025. "UM1." Accessed November 26, 2025. https://www.fullformexpand.com/um1/984018.
"UM1." (n.d.). Fullformexpand.com. Retrieved November 26, 2025, from https://www.fullformexpand.com/um1/984018.
UM1. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/um1/984018 (Accessed: 26 November 2025).
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