As Stan and Ollie enter the yacht's galley for the first time, Stan all of a sudden has lost a lot of weight (and no wonder. The two scenes were filmed months apart between Stan's illness and hospitalization, where he lost around 50 pounds).
Ollie gets a sprayful from the yacht's sink. Yet in the next shot, he's completely dry.
Stan hits Antoine over the head with a bottle which breaks but in the next shot it's intact.
When Ollie introduces Stan to the lawyers, he turns left, while Stan slides in on his right and places a suitcase on the ground. When Ollie looks around and spots Stan, he not-so-subtly glances down to check where the suitcase is (which telegraphs/ruins the gag) before moving back toward the desk and pretending to stumble over the suitcase.
at 15:43 watch for a crew member or spectator appear in the background.
The opening scene in the lawyers' offices supposedly takes place in London, but the nameplate on the outside of the lawyers' building is in French.