That's okay. You were in good company.
The US began considering the Joint Mobile Offshore Base (JMOB) concept in detail during and particularly after Desert Storm in 1991. This was because of all of the negotiations and talk that had to go on to get agreement to build up the forces for Desert Shield and then Desert Storm. the US decided it would be a good thing to have bases of their own where they could do this if they were unable to secure approval. I heard about this in '92 or '93 and began following it. it is a pretty intriguing idea.
Then, in 2000, after a lot of thought and study, DOD made a presentation to the US Congress regarding it, indicating that it was feasible and that the US could construct such a structure. In 2001 this was followed up by another report to Congress by the Institute for Defense Analyses that estimated that such a base would cost something on the order of $5-8 billion dollars back then. some pretty serious consideration was being given in that time frame.
This got some attention at that point in the press and in 2003 in the April issue, the cover story in the Popular Mechanics Magazine was actually entitled, "Battle Island: Floating, Self-propelled Military Base Projects American Power Anywhere." Here's a link to the artcile:
So, the idea has been around and researched and discussed seriously now for about 22 years..