Pedzisa mutsara unotevera: "Wissahickon" yakavakwa muPhiladelphia, Pennsylvania. Yakatumirwa munaNovember 1861, yakatanga kushanda muGulf of Mexico uye paRwizi rweMississippi, uko muna Kubvumbi-Chikunguru 1862 yakabatanidzwa mukubatwa kweNew Orleans, kubhomba kwe
Grand Gulf, makomba maviri akapfuura masvingo eConfederate achiraira rwizi paVicksburg uye hondo ne ironclad.