The six Almirante Lynch-classdestroyers were a private design by J. Samuel White that were significantly larger and heavier armed than their contemporaries. They had four funnels, a tall, narrow fore funnel and three broad, short funnels behind. They were initially armed with six single QF 4-inch guns, unusually arranged with four on the forecastle - two sided in front of the wheelhouse and two sided abreast it - the remaining pair being sided on the quarterdeck. These guns were of a novel Elswick design for the Chileans and when the ships were rearmed they were replaced with standard Royal Navy models. As rearmed in 1918 they carried a BL 4.7-inch gun on the forecastle and another on a bandstand between the after pair of funnels, retained the pair of 4-inch (100 mm) guns abreast the wheelhouse and had two QF 2-pounder pom-poms.
In April 1917, Broke took part in an action known as the Battle of Dover Strait with equally large singleton Swift during which she was damaged.
Botha was damaged in the English Channel on 21 March 1918 off the coast of Flanders when she rammed and sank the German torpedo boat A-19 and was then torpedoed in error by the French destroyer Capitaine Mehl.