After Miriam arrives at the Station and has been there arguing about Webber, when she leaves, her windshield is still clear even though it's been snowing.
In the opening shot there is a white recent model car in front of the house with gambrel roof to the left. When the angle pulls up to show the car turning around the white car is gone.
When drubbing to the port, Pine' s character is wearing gloves that clearly have U.S.N. printed on them. When they go back to his hands, he is still wearing gloves, but no longer have U.S.N. on them.
The engine room was not that of a T-2 tanker. T-2 tankers were turbo electric drive which means a steam turbine drives a generator which powers a 6000 hp electric synchronous AC motor. T-2 propulsion is controlled by levers which connect the motor to the generator and control the speed of the generator. If the seawater rose to the level shown in the movie, there would be no propulsion possible because all the necessary pumps and the main motor were located in the lower engine room and would have been submerged. Flooding of the boilers themselves would not have been an issue but the fuel pumps would also have been submerged.
The SS Pendleton was powered by a steam turbine through a reduction gear to the propeller shaft. She would not have had "Engine Air Intakes". The concerns should have been to keep the rising waters in the engine room from reaching the boilers, not the non existent "Air Intakes"
Once the bow of the Pendleton split from the stern, the lights in this section should have gone out instantly. In the film they remain on until the bow sinks.
When Miriam goes to the house after her car gets stuck in the snowbank, she switches on a radio that comes on instantly. Radios in those days - because they had tubes - took several seconds to warm up.
Neither half of the Pendleton sank, although both are shown doing so in the film. Both the bow and stern sections were left grounded on shoals by the storm, from where they were eventually retrieved and scrapped.
At the end, when all the men were climbing up the ladder to climb onto the pier from the boat, all their clothes were dry.
Despite supposed bitter cold temperatures, no condensation is seen from the mouths of any characters who are speaking outdoors.
Although there are many cars seen in the snowstorm and although their windshields have been cleared by the wipers, you never see a wiper moving even while people are driving through heavy snow..
Miriam leaves the station into the storm, without her coat and no hat. After crashing her car, she flags a woman down for a ride, and is taken to the woman's home. Miriam's hair and dress never appear wet.
When Miriam was driving to the station she was shown passing a utility pole that had a cable TV line attached to it which was obviously not possible for that year.
Right as the opening scene fades in, a white modern car can be seen parked in a driveway on the left. In the next shot is it gone.
In the location credits, the town of Cohasset is misspelled as "Cohassett."