Steam gun boats as a heavily armed answer

The stated displacement figures for a steam gun boat are about 175 tons light, 224 tons standard, and 255 tons at deep load. Geared steam turbines drove two shafts with 8,000 shaft horsepower for a top speed of 35 knots. The stated endurance was about 200 nautical miles at high speed or 900 nautical miles at 12 knots. Wartime additions increased the complement from 27 to 34, largely because the boats accumulated more weapons. In their final form most carried a 3-inch gun, two 6-pounders, four Oerlikon 20 mm cannon, and two 21-inch torpedoes. Only a small number were completed, but their ordering shows concern that existing Fairmile D Dog Boats or larger escorts might not be enough in every circumstance. The type followed the logic of the early torpedo-boat destroyer, countering fast torpedo craft with heavier guns.