ipping ▁Board ▁and ▁various ▁commercial ▁activities ▁until ▁ 2 4 ▁August ▁ 1 9 4 0 ▁when ▁she ▁coll ided ▁with ▁the ▁Norwegian ▁merchant man ▁ ▁off ▁Cart ag ena , ▁Colombia , ▁and ▁s ank . ▁She ▁was ▁struck ▁from ▁the ▁Naval ▁V essel ▁Register ▁on ▁ 2 2 ▁April ▁ 1 9 4 1 . ▁ ▁References ▁ ▁External ▁links ▁▁▁▁▁▁▁ ▁Category : L ap wing - class ▁mines we ep ers ▁Category : Sh ips ▁built ▁in ▁Maryland ▁Category : 1 9 1 9 ▁ships ▁Category : T ug bo ats ▁of ▁the ▁United ▁States ▁Category : World ▁War ▁II ▁ship w re cks ▁in ▁the ▁Car ib bean ▁Sea ▁Category : Mar itime ▁inc idents ▁in ▁August ▁ 1 9 4 0 ▁Category : Sh ips ▁s unk ▁in ▁coll isions <0x0A> </s> ▁Act ea ▁sav ign ii ▁is ▁a ▁species ▁of ▁Ind o - P ac ific ▁c rab ▁from ▁the ▁family ▁X anth idae ▁which ▁is ▁one ▁of ▁the ▁sp iny - leg ged ▁rock ▁c rab s . ▁It ▁has ▁colon ised ▁the ▁Lev antine ▁Sea ▁by ▁Les se ps ian ▁migration ▁through ▁the ▁S uez ▁Canal ▁from ▁the ▁Red ▁Sea ▁since ▁the ▁mid ▁ 2 0 0 0 s . ▁ ▁Description ▁Act ea ▁sav ign ii ▁has ▁an ▁o val ▁car ap ace ▁which ▁is ▁slightly ▁convex ▁on ▁the ▁d ors al ▁surface ▁with ▁a ▁flat ▁median ▁region ▁and ▁a ▁width ▁which ▁is ▁about ▁ 1 . 3 ▁times ▁its ▁length ; ▁the ▁d