Liveaboard Washington DC
Yes, you can liveaboard at Gangplank in DC. but you must buy a boat with current liveaboard status to bypass the waiting list. The seller can not guarantee you liveaboard status but if you have any money and decent credit, the dockmaster will not refuse you.
At any given time there are numerous boats for sale. Now, I know about the following: my 32 PDQ catamaran, a handful of houseboats in various states of repair (i.e. some can be had for a pittance if you''re handy), a barge house (like Sleepless in Seattle), several very nice trawlers... you get the picture.
Life at Gangplank has its challenges (there are two nightclubs that several docks have to contend with on weekend evenings, for example) but the good security, floating docks, winter water, and never-fail electric power do much to make up for them.