Confusion explained- Two songs involved here-
"Vieni sul mar" the Neapolitan song, and "Vieni sul mar" from northern Italy; the latter also known by its first line, "Deh! ti desta fanciulla." Both sung by classical tenors as encores.

The chorus of the northern song is:

Vieni sul mar, vieni a vogar,
sentira l'ebbrezza del tuo marinar!
(the two lines repeated).

Hear the great Tito Schipa sing the northern "Vieni sul mar" at this website:

http://www.italiamerica.org/Vieni_sul_mar.com
Vieni sul mar

An Buchaill Caol Dubh, posting above on 15 August, quoted a few words from the northern Italian song.
I will post the complete lyrics to the northern song in thread 61612, which I linked above (and here again), so that lyrics for the two will be together.

Vieni sul mar