Destroyers serve a number of roles in the game. They can be used to seek out enemy ships for the big guns on their team to target, to launch torpedo salvos at enemy ships, and provide additional anti-aircraft cover for friendly vessels.
Nimble and extremely agile, destroyers are capable of increasing their speed and stopping quicker than any other class. Being long and narrow, they turn rather slowly. Despite their modest size, their turning diameters at top speed can easily compete with those of giant battleships.
Given destroyers’ small draught characteristics, they can easily pass shoals, which almost none of the other classes are capable of.