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A pair of QF 3-inch 20 cwt [Note 1] anti-aircraft guns were fitted abreast the mainmast on Courageous. She mounted two submerged tubes for 21-inch torpedoes and carried 10 torpedoes for them. [ 5 ]
The 3-inch 20 cwt gun was superseded by the QF 3.7-inch (94 mm) AA gun from 1938 onwards, but numbers of various Marks remained in service throughout World War II. In Naval use it was being replaced in the 1920s by the QF 4-inch (100 mm) Mk V on HA (high-angle) mounting.
Her secondary armament was four quick-firing (QF) 3-pounder (47 mm (1.9 in)) Vickers Mk I guns and two submerged 21-inch (533 mm) torpedo tubes. During the war, four additional four-inch guns were added amidships to increase her firepower. A QF three-inch 20 cwt [Note 1] anti-aircraft gun was also added. In 1918 it was replaced by a four-inch gun.
Anti-aircraft armament was added, with the addition of a high-angle 76 mm (3 in)/50 gun and a 20 mm (1 in)/70 autocannon. The most notable change to the armament was the removal of the ships' torpedo tubes, turning the torpedo gunboats, into gunboats. The Ziqiang and Datong were re-designated into 'fast gunboats' after re-entering service. [8]
Her secondary armament consisted of four quick-firing (QF) 3-pounder (47-millimetre (1.9 in)) Vickers Mk I guns and two submerged 21-inch (533 mm) torpedo tubes. During the war, four additional four-inch guns were added amidships to increase her firepower. A QF three-inch (76 mm) 20-cwt [Note 1] anti-aircraft gun was also added. In 1918 it was ...
Anti-aircraft defence was provided by a single QF 3-inch 20-cwt gun [Note 1] and a QF 2-pounder (40 mm (1.6 in)) Mk I gun. [ 3 ] The spotting top on the tripod mast between the turret and the funnel housed a rangefinder that fed data to the director on the roof of the spotting top.
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