HMS Vulture

I'd like to do a quick (what if) scenario using the American sloop Thorn trying to intercept the HMS Vulture (another Swan class sloop) that was transporting Benedict Arnold from fort West Point to England.
My question is, were any other British ships that accompanied The Vulture?

My bet is, they'd probably bank on Security Through Obscurity. Not a lot of info available, sadly, at least from a cursory search.