Sharing or seeking out private "leaked" content can have serious legal and ethical implications. Bottom Line:
"SS" is a prefix used for civilian steamships. "USS" stands for "United States Ship," the official designation for commissioned ships of the U.S. Navy. The Nita was a steamship that served in the Navy, leading to the dual prefix.
For the highest quality, always look for options that offer 1080p (Full HD) or 4K (Ultra HD) resolution.