Editing Cassin-class destroyer (section)

==="Thousand tonner" development===
The "thousand tonner" type included 26 destroyers in five classes: four ''Cassin''s, four ''Aylwin''s, six {{sclass|O'Brien|destroyer|5}}s, six {{sclass|Tucker|destroyer|5}}s, and six {{sclass|Sampson|destroyer|5}}s.<ref name=1000tondh>{{cite web |url=http://destroyerhistory.org/early/1000tonners/ |title=US Navy 1000-ton destroyers |publisher= Destroyer History Foundation |access-date=5 March 2016}}</ref> The ships were commissioned 1913–17. As the type developed the gun armament of four 4 inch (102 mm) guns remained the same, torpedo armament greatly increased, and displacement rose by about 100 tons. The ''Cassin'' and ''Aylwin'' classes had eight [[American 18 inch torpedo|18-inch (450 mm)]] [[torpedo tube]]s in twin broadside mounts, two mounts on each side. The ''O'Brien''s introduced the {{convert|21|in|mm|adj=on|0}} torpedo to the US destroyer force, but the number of tubes remained at eight. In the ''Sampson''s, torpedo armament was increased to twelve [[American 21 inch torpedo|21 inch (533 mm)]] tubes by replacing the twin mounts with triple mounts.<ref name=Friedman1/> The subsequent "flush deck" types retained the gun and torpedo armament of the ''Sampson''s on a new hull with displacement increased by about 100 tons, and with a new engineering plant. The thousand tonners also debuted US destroyer [[anti-aircraft]] armament: two [[QF 1-pounder pom-pom|1-pounder]] (37 mm) [[autocannon]]s were specified for the ''Tucker''s but not fitted until the ''Sampson''s.<ref name=Conways1/>

In engineering, cruising turbines were re-introduced with the ''Tucker'' and ''Sampson'' classes. {{USS|Wadsworth|DD-60|6}} had prototype fully [[gear]]ed turbines without cruising turbines; this arrangement was later adopted for the {{sclass|Clemson|destroyer|0}} "flush deckers"; other flush deckers had geared turbines with varying cruising arrangements.<ref name=Conways1/>