the 45 caliber model 1892 guns supplemented the 10 inch guns of the sea front main line of defence. these guns were french canet guns and had a maximum range of . unlike the 10 inch guns, the 6 inch guns had a modern counter-recoil system and achieved a rate of fire of five shots per minute. the six inch guns were intended against destroyers and other smaller vessels. they were installed in four batteries of four guns each at the sea front on miessaari, harmaja, isosaari and santahamina. a fifth battery was under construction on the mainland at skatanniemi cape. the guns for this battery arrived, bringing the total sea front number to twenty, but the construction was not completed before the war ended. further seventeen guns on lower ship deck mountings with lower maximum elevation were used on the land front. the guns used at krepost sveaborg included both russian obukhov licence-produced guns and french schneider guns.