When the EOD team is in the water, the ship's crew lowers ladders from the lowest weather deck for the team to climb, a distance of 60-70'. This leads to the loss of one man. All such ships have cargo doors that are much lower and would have been far safer to use.
During the very final defusing scene where the red wire is cut on the detonator, there follows sequential views of the red wire being cut on all the other bombs, however the rough random drill marks of the hole cut to access this is identical on all the bombs meaning it is in fact the same one filmed five times just with a different member of the bomb disposal team cutting the wire each time.
The scene where the Indian steward brings tea and toast to the children's and their mother's cabin (immediately after the pot of nails is knocked over in the corridor) he leaves immediately followed by the kids. Instantly outside, the steward is approaching from the far end of the corridor carrying a tray.
Juggernaut tells Porter that there are seven 50-gallon drums of Amatol on the ship, 7000 pounds total. This would mean each drum has to contain 1000 pounds of explosives. Amatol is a dry pressed or cast mixture of TNT and Ammonium Nitrate. Drums of that size typically only hold about 250 to 400 pounds of dry chemical compounds depending on their density, plus we know the drums are not full since each has a sizable cavity in the middle as seen during the defusing.
In the beginning of the movie, Juggernaut calls Porter to tell him about the bombs on board the ship. Juggernaut continues to speak in the present, but the visual is showing events from the future. First there is a visual of a written communication that there are bombs on the ship. Next there is a visual of the ship captain,calmly enjoying a conversation, appearing to be informed there are bombs on the ship. Next the crew searches and finds the containers with the explosives. Then Juggernaut still speaking in the present says that to prove he is serious, a sample explosion will happen "now" and the visual cuts to a couple of large explosions, throwing a couple of men in the air. Based on the timing of the present Juggernaut conversation, the large explosions would have occurred a long time before the opportunity for Porter to report to the ship that there are bombs on board and captain would have been made aware of the problem by the unexpected and large explosions.
The goof item below may give away important plot points.
Juggernaut tells Fallon to "cut the blue", and suspecting a last attempt by Juggernaut at fulfilling his revenge, Fallon disobeys and cuts the red wire and survives. But he doesn't tell his team what he is doing beforehand, so if Juggernaut had in fact been telling the truth, Fallon would have blown up and the rest of the team would all have assumed cutting the blue would blow them up. They would switch to cutting the red, thus all blowing themselves up.