The United States Coast Guard operated four 52-foot Motor Lifeboats (MLBs), also known as "special purpose craft — heavy weather" (SPC-HWX), from 1956 until 2021. The 52' MLBs supplemented its fleet of 227 47-foot Motor Lifeboats.
The United States Coast Guard operated four 52-foot Motor Lifeboats (MLBs), also known as "special purpose craft — heavy weather" (SPC-HWX), from 1956 until 2021. The 52' MLBs supplemented its fleet of 227 47-foot Motor Lifeboats.
Source: Wikipedia "52-foot Motor Lifeboat" · CC BY-SA 4.0
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