Right now for this SPECIFIC incident... ITALIANS WERE IN THE WRONG... they could but didn't. Period.
But since you love your 7 God ruling point... here for you...
1. THere is no harbour... since those migrants are joining those BIG boat via small ones/plastic ones...
2. Refugees have no WRONG... They have every right to leave for a better life. Period
3. Libyan are doing their parts with the LIMITED vessels they have... to this day they have only few for a coast line of 1500km... Italians with a big fleet...can't even stop boats in a 200-250km... Door line...
4. Same for MAlta...they do not have vessels enough to patrol all of those area...
5. Ofc Italians are NOT in the wrong if they DIDN'T SEE that boat... BUT THEY DID and REFUSED to HELP. Period
6. Tunisia can't PATROL THOSE AREA!!. and with the little we have... WE STOPPED EVERY boat from our cost to leave... So we did our job... Like EU is giving €€ to Italian navy to patrol ... Give us some and we will do it too by buying more adequates ones...

7. Hypocrits seems to be your favorite word... And YES THE WRONG is FOR THIS incident toward ITALIAN NAVY FOR NOT HELPING, even tho' THEY WERE ABLE TO... MEANING THEY CHOOSED TO LET THEM DIE. Period
Have Fun.