instance_of uss louisville 
A ___MASK65___ is a normally tubular ___MASK59___ or other device designed to discharge projectiles or other material . The ___MASK29___ may be solid , ___MASK83___ , gas or energy and may be free , as with bullets and artillery shells , or captive as with Taser probes and whaling harpoons . The means of projection varies according to design but is usually effected by the action of gas pressure , either produced through the rapid combustion of a propellant or compressed and stored by mechanical means , operating on the ___MASK29___ inside an open - ended tube in the fashion of a piston . The confined gas accelerates the movable ___MASK29___ down the length of the tube , imparting sufficient velocity to sustain the ___MASK29___ ' s travel once the action of the gas ceases at the end of the tube or muzzle . Alternatively , acceleration via electromagnetic field generation may be employed in which case the tube may be dispensed with and a guide rail substituted . ___MASK95___ are ___MASK28___ - borne vehicles including ships , boats , hovercraft and submarines . ___MASK95___ usually have propulsive capability ( whether by sail , oar or engine ) and hence are distinct from a simple device that merely floats , such as a log raft . USS Louisville was a ___MASK12___ - class ironclad ___MASK13___ constructed for the U . S . Army by James B . Eads during the American Civil War . ( While initially owned by the Army , the ___MASK12___ Class gunboats were commanded by U . S . Navy officers , and were eventually transferred to the Navy . ) Louisville was built at St . Louis , Missouri , by James B . Eads in 1861 , under contract with the War Department for the price of $ 89 , 000 . Designed by U . S . Navy `` Constructor '' ( Naval Engineer ) Samuel M . Pook , she was accepted 15 January 1862 ; and commissioned 16 January 1862 , Commander Benjamin M . Dove , USN , in command . Despite being designed by naval personnel , budgetary concerns led the War Department to fund construction of the Louisville with Army funds . As such , she was turned over to Army command upon completion and joined the Army ' s Mississippi River Squadron . Eventually the entire western river flotilla would be transferred to Navy command . The American Civil ___MASK100___ was a civil ___MASK100___ in the United States fought from 1861 to 1865 . The ___MASK74___ faced secessionists in eleven Southern states grouped together as the Confederate States of America . The ___MASK74___ won the ___MASK100___ , which remains the bloodiest in U . S . ___MASK60___ . Captain James Buchanan Eads ( ___MASK96___ 23 , 1820  March 8 , 1887 ) was a world - renowned American civil engineer and inventor , holding more than 50 patents . The Mississippi ___MASK42___ is the chief ___MASK42___ of the largest ___MASK75___ ___MASK38___ on the North American ___MASK72___ . Flowing entirely in the United States ( although its ___MASK75___ basin reaches into Canada ), it rises in northern Minnesota and meanders slowly southwards for to the Mississippi ___MASK42___ Delta at the Gulf of Mexico . With its many tributaries , the Mississippi ' s watershed drains all or parts of 31 U . S . states and 2 Canadian provinces between the Rocky and Appalachian Mountains . The Mississippi ranks as the fourth longest and fifteenth largest ___MASK42___ in the world by discharge . The ___MASK42___ either borders or passes through the states of Minnesota , Wisconsin , Iowa , Illinois , Missouri , Kentucky , Tennessee , Arkansas , Mississippi , and Louisiana . A ___MASK13___ is a naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets , as opposed to those military ___MASK20___ designed for naval warfare , or for ferrying troops or supplies . A civil ___MASK100___ , also known as an intrastate ___MASK100___ in polemology , is a ___MASK100___ between organized groups within the same ___MASK34___ or country , or , less commonly , between two countries created from a formerly united ___MASK34___ . The aim of one side ___MASK96___ be to take control of the country or a region , to achieve independence for a region or to change ___MASK85___ policies . The term is a calque of the Latin " bellum civile " which was used to refer to the various civil wars of the Roman Republic in the 1st century BC . The Confederate States , officially the Confederate States of America ( CSA or C . S .), commonly referred to as the Confederacy , was an unrecognized breakaway ___MASK27___ of 11 secessionist ___MASK99___ states existing from 1861 to 1865 . It was originally formed by ___MASK52___ ___MASK99___ states  South Carolina , Mississippi , Florida , Alabama , Georgia , Louisiana , and Texas  in the Lower South region of the United States whose regional ___MASK89___ was mostly dependent upon agriculture , particularly cotton , and a plantation ___MASK38___ that relied upon the labor of African - American slaves . The Pook Turtles , or ___MASK12___ - class gunboats to use their semi - official name , were war vessels intended for ___MASK45___ on the Mississippi River during the American Civil War . They were also sometimes referred to as " Eads gunboats ." The labels are applied to ___MASK52___ vessels of uniform design built from the keel up in Carondelet , Missouri shipyards owned by James Buchanan Eads . Eads was a wealthy St . Louis industrialist who risked his fortune in support of the Union . ___MASK77___ ( derived from the Latin ___MASK50___ " secessio ") is the ___MASK82___ of a group from a larger entity , especially a political entity ( a country ), but also any organization , union or ___MASK98___ ___MASK79___ . Threats of secession can also be a strategy for achieving more limited goals . On boats and ships , keel can refer to either of ___MASK48___ parts : a structural element that sometimes resembles a fin and protrudes below a ___MASK63___ along the central line , or a hydrodynamic element . These parts overlap . As the laying down of the keel is the initial step in the ___MASK10___ of a ___MASK53___ , in British and American shipbuilding traditions the ___MASK10___ is dated from this event . Only the ___MASK53___ ' s launching is considered more significant in its creation .