River-class destroyer
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The River-class destroyer was a class of torpedo boat destroyer built for the Royal Navy in the first few years of the 20th century, and which saw extensive service in World War I. These 37 vessels were all constructed to disparate builders' designs, just like the preceding classes.
HMS Eden, an early River-class destroyer, was unusual in being driven by steam turbines.
View at stern and the three propeller shafts of HMS Eden, 1904 laying in the dry dock
HMS Welland
QF 6-pounder Hotchkiss
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The Ordnance QF Hotchkiss 6 pounder gun Mk I and Mk II or QF 6 pounder 8 cwt were a family of long-lived light 57 mm naval guns introduced in 1885 to defend against new, small and fast vessels such as torpedo boats and later submarines. There were many variants produced, often under license which ranged in length from 40 to 58 calibers, but 40 caliber was the most common version.
Early Elswick gun on recoil mounting
Mark I Male tank with a long QF 6-pounder 8 cwt gun, at the Bovington Tank Museum.
Hotchkiss 6-pounder being prepared to combat at the USS Detroit (L'Univers Illustré, 1894).
Mk II Shell base, showing fuze hole