There was actually a barge, and kind of a neat thing at that. It is a trailer that floats!

We watched them launch it about 5 o'clock. They then loaded the fireworks on the barge, and used what looked like a boston whaler to take it over to the bandstand in the bay. It sat there until about 9 (the wind died down by then) and then moved it into position.
The barge looked small, and I feared it would be a short program like on the fourth of July, but it was a full twenty minutes.
I loved near the end in the finale, when there were multiple "bombs" that went off the barge in almost a 180 degree arc, looking almost like an expanded hand fan. You really had to see it to appreciate it. My daughter had her camera, and if she got a pic of it, I will post it.
Thanks Alton, nice display. BTW, the concert was the Echo Tones, and Kudos to them as well, as they continued to play right up to 9:20, the start of the fireworks.