have any remains in the mass graves on the beach ever been discovered? Are there any memorials?
As they were building the Brooklyn Navy Yard, bones of these men kept coming to the surface. There are more undoubtedly still there. There is a fine memorial in Ft Greene Park in Brooklyn.
Here’s a link to the U.S Merchant Marine site. Scroll down for excellent links, including the Prison Ship Martyr’s Monument, a listing of 8000 American dead, and an article on the HMS Jersey.
http://www.usmm.org/revolution.html