Hey Y'all, its been a while. I have questions about something that comes from Page 137-138 of "Confederate Ships Afloat". "Dolly was a steamer which served Confederate authorities in the Roanoke River. She was seized by US Navy near Edwards Ferry, NC, in May (1865); on the 27th it was reported that she had been sunk in a canal along with a lighter of iron plates. Her dimensions and importance are not recorded." This boat seems to have been captured and then sunk by the US navy, is that right? "with a lighter of iron plates." What was a "lighter"? Was it something like a barge or a "flat" for carrying cargo?