British I-class destroyers carried four 4.7-inch guns in separate mounts and ten torpedoes in two quintuple launchers. Their four mounts gave more flexible firing arcs and limited how many guns a hit on one mount could disable. Tribal-class destroyers instead carried eight 4.7-inch guns and four torpedoes. In the comparison given here, the I class was lighter than the Italian ships, while the Tribal class was somewhat heavier. Both British types are cited as 36-knot ships, undermining the assumption that Italy's lighter armament necessarily bought superior speed. The comparison separates the number of guns from the usefulness and survivability of their mounting arrangement.
Notable Point · 48:25-50:38
I-class and Tribal armament compared with Italian destroyers
British I-class and Tribal destroyers illustrate different armament choices, including more torpedoes, more guns, and more flexible mount layouts.