Lapwing Class Minesweeper
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The ''Lapwing''-class minesweeper, often called the Bird class, was an early "AM-type" oceangoing minesweeper of the United States Navy. Seven ships of the class were commissioned during World War I, and served well into the 1950s. A number were refitted to serve as ocean-going
tugs A tugboat or tug is a marine vessel that manoeuvres other vessels by pushing or pulling them, with direct contact or a tow line. These boats typically tug ships in circumstances where they cannot or should not move under their own power, suc ...
, salvage vessels,
seaplane tender A seaplane tender is a boat or ship that supports the operation of seaplanes. Some of these vessels, known as seaplane carriers, could not only carry seaplanes but also provided all the facilities needed for their operation; these ships are rega ...
s, or
submarine rescue ship A submarine rescue ship is a surface support ship for submarine rescue and deep-sea salvage operations. Methods employed include the McCann Rescue Chamber, deep-submergence rescue vehicles (DSRV's) and diving operations. List of active subm ...
s. The propulsion system consisted of 2 Babcock & Wilcox 200psi boilers and a 1,400shp
Harlan and Hollingsworth Harlan & Hollingsworth was a Wilmington, Delaware, firm that constructed ships and railroad cars during the 19th century and into the 20th century. Founding Mahlon Betts, a carpenter, arrived in Wilmington in 1812. After helping construct many ...
triple expansion reciprocating steam engine.


Ships

The table makes no distinction between classification as "Minesweeper No. X" and "AM-X". This change affected all boats equally ca. 1920. All boats reclassified as Fleet Tugs (AT) where later again reclassified as Fleet Tug, Old (ATO) (ca. 1944). The table treats them the same. Brant and Grebe were never reclassified as ATO.


References


External links

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USN Ships


{{WWII US ships Mine warfare vessel classes