Harry,
Here's what I know:
First, the John W. Brown is the last Liberty ship afloat as I understand. It lives on the Chesapeake Bay and gives summer cruises.
http://www.liberty-ship.com
There is a part of a Ghost Fleet in the York River in Virginia which is being sold for scrap and to prevent leakage of all kinds of stuff from the aging craft.
Also: from an additional website.
Aiding the relief effort:
USS Bataan (LHD 5): This amphibious assault ship was in the Gulf and rode out the storm, then moved toward New Orleans. Her helicopters were among the first to begin plucking stranded residents out of harm's way. Follow the link for a great story. However, the crew isn't doing as much as they could, and they are eager for more. The captain says "But I can't force myself on people." There are apparently a lot of military units waiting to be called on to do more.
USS Harry S. Truman (CVN 75): The carrier loaded up on fuel and will take aboard 30 to 40 Navy and Army helicopters to support relief operations. The Truman's crew wants to match or exceed the 90 missions a day that the USS Lincoln ran during tsunami relief in Indonesia. As we saw after the tsunami, the capability to generate 400,000 gallons of fresh water per day is a great asset.
Swift (HSV 2): The high-speed catamaran transport has also been dispatched to the area. Seems to me that the Swift's ability to navigate shallow water will be a major asset in the operations.
USNS Comfort (T-AH 20): This hospital ship with 250 beds will serve as a floating medical facility and headquarters and supply station for additional medical personnel. She's sailing from Baltimore and won't arrive until the 8th.
USS Iwo Jima (LHD 7), USS Shreveport (LPD 12), and USS Tortuga (LSD 46): This expeditionary strike group will arrive in the area on Sunday from Norfolk, Virgina. (Link updated to a more informative story.)
USNS Arctic (T-AOE 8): This fast combat support ship from the Iwo Jima group is already in the area supporting the naval vessels on station.
USS Whidbey Island (LSD 41): Air-cushioned LCAC amphibious transports can operate off of this landing ship (dock), just like her sister the Tortuga in the Iwo Jima group. The DHS release linked to here says the Whidbey Island "will bring with it the capability to employ a movable causeway to the region" though I don't know what this means. (UPDATE: Commenter EagleSpeak says this is the JLOTS. Great find!)
USS Grapple (ARS 53): This salvage and rescue ship brings divers, rescue equipment, and lifting and towing capabilities.
USNS Mercy (T-AH 19): The Comfort's sister ship was not originally going to be deployed, but plans changed and the hospital ship, a veteran of tsunami relief, will now arrive around the 21st from San Diego
