They were supposed to have burnt all their raft keeping Passepartout warm, but when they see the ship you can still see part of the raft in the bottom corner of the screen.
They climb into the rescue boat when it is till high and dry on the sand. They could never move the boat with occupants into the sea. You have to board a boat when it is afloat.
A ship the size of the one that rescued Fogg can not turn 90 degrees in a matter of seconds as depicted in this episode.
In the club, a Queen Victoria jubilee bust of 1887 can be seen. However, the show is set in 1872.
Where the heroes are fighting off the "Confederates", the Marshal hands a revolver to "Fix" saying it's a Colt .22 pocket pistol. Colt did not make .22 caliber pocket pistols in the 1800s.