5 0 ▁mines ▁to ▁be ▁used ▁to ▁protect ▁her ▁anch orage . ▁ ▁The ▁Rus si ans ▁could ▁not ▁manufact ure ▁the ▁Har vey ▁arm or ▁used ▁by ▁Se v ast opol , ▁ ▁so ▁the ▁ship ' s ▁arm or ▁was ▁ordered ▁from ▁Beth le hem ▁Ste el ▁in ▁America , ▁although ▁only ▁her ▁water line ▁arm or ▁bel t ▁was ▁made ▁from ▁Har vey ▁arm or ▁and ▁the ▁rest ▁was ▁nick el ▁steel . ▁The ▁arm or ▁bel t ▁was ▁ ▁thick . ▁The ▁main ▁gun ▁tur rets ▁had ▁a ▁maximum ▁thick ness ▁of ▁ ▁of ▁arm or ▁and ▁her ▁deck ▁arm or ▁r anged ▁from ▁ ▁in ▁thick ness . ▁ ▁Const ruction ▁and ▁career ▁ ▁Se v ast opol , ▁named ▁for ▁the ▁sie ge ▁of ▁Se v ast opol ▁during ▁the ▁Crime an ▁War , ▁was ▁laid ▁down ▁at ▁the ▁Gal ern ii ▁Island ▁ship yard ▁in ▁Saint ▁Petersburg ▁on ▁ 7 ▁March ▁ 1 8 9 2 . ▁Const ruction ▁was ▁led ▁by ▁two ▁engine ers , ▁E . ▁P . ▁And rus chen ko ▁and ▁N . ▁I . ▁Af anas ye v , ▁and ▁began ▁on ▁ 7 ▁May ▁ 1 8 9 2 , ▁about ▁the ▁same ▁time ▁as ▁the ▁batt les hip ▁ ▁was ▁laid ▁down . ▁The ▁ceremony ▁was ▁attended ▁by ▁Alexander ▁III ▁of ▁Russia ▁and ▁then - T s es are v ich ▁Nicholas ▁II . ▁Se v ast opol ▁was ▁launched ▁on ▁ 1 ▁June ▁ 1 8 9 5