Mark Shea explains it as it is:
Here’s the thing: eyewitnesses of extraordinary events tend to give varying accounts of those events. ..
Did the Titanic pop its rivets or tear a hole in her side? Did she split in two at the surface as some witnesses said or did it happen just as she sank? ...
The list of curiosities and "discrepancies" in the record surrounding the Titanic is a much-loved pastime for disaster buffs.
But only a fool would conclude from this, even after 2000 years, that there was no Titanic and that she did not strike an iceberg and sink on April 15, 1912.
But I do say that there is more to this foolishness than meets the eye. People exert effort when something is at stake. Perhaps the effort put into nullifying the existence of Jesus -- the Jesus of the Gospels -- is that there is a grave desire to thereby negate its implications.