There is a sunken schooner near the river bank - very shallow and broken up. Fun dive - but a long walk from the parking lot to the dive point. A small boat or kayak would be best from the parking lot. My guess is it sank in the late 1800’s or early 1900’s and may have been used to ferry products from the ocean to East Hartford up the Connecticut River.
Here is a video of the site -
Park info; riverfront.org/parks/great-river-park