You've never witnessed a more hapless ship than this cigar tube filled with clueless sailors yelling at each other over their multiple failings.
Fifteen minutes in, it is totally evident that no one is in charge, as first they identify a military helicopter tracking them with a submerged sonar array, and then do nothing at all to prepare for the expected torpedoes it launches after locating them (such as to dive, duh) -except to amusingly & ineffectually cross masking tape over their computer monitors.
Total incompetence is almost never a welcome plot driver, except perhaps as a meta element (skillfully employed in Catch 22, Dr. Strangelove).
My review isn't a sop for films of past decades so much as a lament for the lack of decent writing, here.
But also, it appears the intent was to spotlight Iran as a terror state employing sophisticated weapons systems, certainly more so than is documented in reality, and such that France is easily bested ( then again, I didn't watch through to this obvious conclusion.)