Possibly, but not for sure. All of the planes that were involved in that operation flew out of Libya, and the ones that survived the mission appear to have returned there. I don't recall any accounts specifically of them ditching off Croatia though it can't be ruled out.
Navigation was hit or miss in WW2, ever hear of the B-24 Lady Be Good? Returning late from its 1st or 2nd mission, can’t remember it overflew its base and headed out into the Sahara Desert...plane flew another 100 miles and ran out of fuel, crew bailed, one crewman’s chute didn’t open so the other crew started walking, most have been beyond horrible, little water or food, 125 during the day, freezing at night. From a diary found by British oil exploration crews on a crewman’s remains in the 60’s said some of the crew was very hostile to Navigator. They found the last man had walked 80 miles from the B-24 crash site without any\little water or food..I cannot in my worst nightmare imagine that walk..
Please keep me apprised of updates, the article said something to the effect that some specific lost servicemen were associated with one of the planes, that would mean the date of their crashes will be known.