Japanese naval shells on Russo-Japanese War

12in. shells

left: high explosive
centre: armour piercing shell
right: semi armour piercing shell

Ijuuin Fuze & Russian fuze

left: Ijuuin Fuze
A fuze's safety depends on a small screw and a nut which often breaks before the shell hits
right: Russian fuze
Safer than Ijuuin's

these figures come from "Kaigun Hosen Shidan" Mayuzumi Haruo, Hara Shobo, 1972

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