When Miss Farnham is in the ship after being kidnapped, she is on the bottom bunk and a calendar is on her left. When time is stopped and she is sent to the top bunk, there is quick shot of her with the calendar on the left. However, there was no calendar by the top bunk.
When the watch is used to stop time, the effect should be instantaneous from the other characters' perspectives. Whenever the watch is used, the characters are able to look around and speak for several seconds before the watch user reappears, but from the watch user's perspective, everyone and everything is perfectly still for the duration of the time freeze.
On the yacht, a close-up shows the wrong kind of bullet for the type of gun used.