Roosevelt Island Tipters share these photos of what appears to be the section of a submarine

being barged north on the East River passing Roosevelt Island this evening.

According to one observer:

Likely a piece of a sub headed for assembly in Groton, Conn. it looks like the front end of a fast attack submarine

Looks like it is part of a nuclear attack submarine.

Here’s an interesting video on the design and construction of nuclear submarines.

and a look inside a nuclear submarine.

UPDATE 11:50 PM