For defence against torpedo boats the ships carried a dozen QF 6-pounder  Hotchkiss guns and eight QF 3-pdr  Hotchkiss guns. They also mounted four  above-water torpedo tubes, one pair on each broadside.
For defense against torpedo boats, ships had a combination of guns (12 x 6-pounder Hotchkiss and 8 x 3-pdr Hotchkiss) and torpedo tubes (4 above water).