A-class torpedo boat

SMS A 68
Class overview
Operators	Imperial German Navy  Polish Navy  Belgian Navy  Estonian Navy  Soviet Navy
Built	1914–1918
In service	1914–1950
Planned	113
Completed	92
Cancelled	21
Lost	30

The A-class torpedo boats were a class of German single-funnelled torpedo boat/light destroyer designed by the Reichsmarineamt for operations off the coast of occupied Flanders in the First World War. The "A" designation was to avoid confusion with older classes and designs. They were classed officially as "coastal torpedo boats" (German: Küstentorpedoboote) to differentiate from larger, ocean-going torpedo boats.

Six groups of vessels were built under the class between 1914 and 1918, increasing in displacement from 109 tons to 335 tons. All had a raised forecastle, shallow draught, and carried one (for most) or two (for A1-A25) 17.7 in (45 cm) torpedo tubes amidships.