Somewhere on the internet, a question came up about the Sandy Hook Bar. I can't remember every hearing of it. It blocked the entrance to New York Harbor back at the time of discovery.
There is a chart from the about the time the Constitution (the document, not the ship) here: https://www.digitalcommonwealth.org/sea ... :wd3768451 You can find some other early charts with a little searching.
Current day chart here: chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.charts.noaa.gov/PDFs/12327.pdf
Information about the in-between times is hard to find. If anyone has a coffee table book on the Ambrose Channel, please let me know.