Those are the sailors of Eärendil, and as their name's are sindar and they are a good crew I bet they are falathrim.
Thus I also think they are the ONLY ones beside Cirdan who got a name..
Hm, the source claims they are Men. That just make no sense at all. Why would Eärendil have human sailors when he was raised among elves, lived in the Mouths of Sirion and was close to Balar at the time (both wich was elven)?
EDIT 2: All other sorces (pages) I find claim's their kinship unkown, as well as Quenta SIlmarillion never states it.