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An Ottoman redoubt of the Dardanelles Fortified Area. The weapon is possibly a German-made 28 cm SK L/40 gun on a coast defense mount.
An Ottoman redoubt of the Dardanelles Fortified Area. The weapon is possibly a German-made 28 cm SK L/40 gun on a coast defense mount.
50-pounder Model 1811 Columbiad (7.25 inch or 184 mm bore) and center-pivot mounting designed by George Bomford as an experimental coastal defense gun
50-pounder Model 1811 Columbiad (7.25 inch or 184 mm bore) and center-pivot mounting designed by George Bomford as an experimental coastal defense gun. This gun was built in 1811 as a component of the Second System of US fortifications.
Japanese 11-inch howitzer firing; shell visible in flight
Japanese 11-inch howitzer firing; shell visible in flight
One of the three 28 cm main battery guns at Oscarsborg
One of the three 28 cm main battery guns at Oscarsborg
A boom blocking the River Foyle during the siege of Derry
Crusaders break a chain protecting the harbour (at left) in the siege of Damietta.
Crusaders break a chain protecting the harbour (at left) in the siege of Damietta.
Boom towers in Norwich
Boom towers in Norwich
Remains of the great chain that protected the Golden Horn
Remains of the great chain that protected the Golden Horn