Assuming that you are referring to the Marghera yard of Fincantieri:
KONINGSDAM (Yd 6241, IMO 9692557) was the only one that was well into construction. Keel laid (d/m/y) 5/12/2014, launched 6/3/2015, completed 31/3/2016
Probably not much to be seen of either of the next ones:
SEABOURN ENCORE (Yd 6251, IMO 9731171). Keel laid 29/6/2015, launched 6/3/2016, completed 30/11/2016
CARNIVAL HORIZON (Yd 6243, IMO 9767091). Keel laid 20/12/2013, ,launched ??, now nearly finished at Palermo.
Not sure whether any naval vessels built there.
Cannot fiind any other yard building at Venice that year.