The Japanese versions of the 6 - pounder were known as Yamanouchi guns and were largely identical to their British equivalents .
Japan adopted the 40 caliber Hotchkiss 6 - pounder in the 1880s to arm its destroyers , protected cruisers and unprotected cruisers .
The Japan versions of the 6 - pounder were known as Yamanouchi guns and were largely identical to their British equivalents .
Japan adopted the 40 caliber Hotchkiss 6 - pounder in the 1880s to arm its destroyers , protected cruisers and unprotected cruisers .