Plot hole: When Captain Towers gives his XO an injection to allow him to die in peace, he, properly, swabs the site with alcohol, and slips the needle into the vein. However, immediately below the injection site, is a hep-lock.a port installed into a vein to allow injectables to be administered. I cannot imagine that a senior Naval officer would be so ignorant of the port's function.
On the Beach (2000)
1 plot hole - chronological order
Directed by: Russell Mulcahy
Starring: Armand Assante, Bryan Brown, Rachel Ward, Jacqueline McKenzie
Factual error: Capt. Towers (4 rings on his shoulder) would be addressed as Captain, not Commander. And when he was promoted to Admiral he never displayed that rank.