Verisimilitude
Seagulls in the middle of the Atlantic
A massive ship towing another massive ship mere feet behind it by cables 100 feet in the air.
And then they stop the ship but the other one doesn't crash into it.
nothing swaying or moving
Every ship has 4 stacks like the Titanic
And CGI that looks like it dates back to 1899.
One has the feeling the people behind this production have never even seen a ship, let alone been on it.