It needs to be noted that many parts of the United States Constitution were influenced by the Iroquois Nation Constitution.
Having Oilers Geared for In Port Operations.
Fresh water - always seems to be in short supply at the site of any disaster. The Oilers are already configured to carry a million gallons or more of potable water. It could be regularly used to keep it fresh. New technology desalinization plants would be a plus, the ship existing plants are too small.
Adding side doors and converting the formerly liquid cargo compartments requires expensive design and engineering, but it is do-able. The top-side decks should be cleared of winches so deck cargo like building material, small boats, trucks, ambulances, etc. could be stored. Moderate-to-heavy lift cranes could be added. When clearing the decks, a larger heliport area should be added. AO-144 has one already.