The Canon de 164 mm Modèle 1893 was a medium-caliber naval gun used as the secondary armament of a number of French pre-dreadnoughts and armoured cruisers during World War I.
It used a Welin interrupted-screw breech and bagged propellant with a de Bange obturator to get a good gas seal during firing.
The guns fired 52 kg (115 lb) shells at a muzzle velocity of 865 m/s (2,840 ft/s) to a maximum range of 9,000 m (9,800 yd).
It could use the same ammunition as the older guns, but could also fire a new 49.8 kg (110 lb) high-explosive shell fitted with a ballistic cap at a velocity of 830 m/s (2,700 ft/s) to a range of 19,200 m (21,000 yd).
[2] Eight of these railroad guns remained in French service after the end of World War I and at least four were captured by the Germans and given the designation 16 cm Kanone (E.) 453(f) although what use was made of them, if any, is unknown.