Analysis of information sources in references of the Wikipedia article "CSS Virginia" in English language version.
The Union's naval infrastructure was dealt a crippling blow on April 20, 1861, when the ill-conceived and botched evacuation of the Norfolk Naval Shipyard at Gosport, Virginia led to the Confederate capture of over 1000 naval guns, irreplaceable dry dock, and repair facilities.
The Government vessels had been scuttled in the afternoon before the Pawnee arrived, to prevent their being seized by the Secessionists… The following are the names of the vessels which were destroyed: Pennsylvania, 74 gun-ship; steam-frigate Merrimac, 44 guns; sloop-of-war Germantown, 22 guns; sloop Plymouth, 22 guns; frigate Raritan, 45 guns; frigate Columbia, 44 guns; Delaware, 74 gun-ship; Columbus, 74 gun-ship; United States, in ordinary; brig Dolphin, 8 guns; and the powder-boat… [plus] line-of-battle ship New-York, on the stocks… Large quantities of provisions, cordage and machinery were also destroyed — besides buildings of great value — but it is not positively known that the [dry] dock was blown up.
