Ollie is seen holding a newspaper up in a close up shot but it's down in the next shot.
Oliver is shown fishing with Stan while holding a newspaper.
While holding the paper it goes from being folded to open to folded again.
The whitewash trough was too shallow to cover the drunken sailor with whitewash just by his falling into it face-down. In the first shot of him falling, the whitewash doesn't splash much onto his back side, but in the next shot, he is covered all over in whitewash.
The cabin door that Hardy crashes through is obviously just made of thin breakable panelling that simply "pulverizes" when he barges through it.
Ollie's real feet are clearly visible when he supposedly turns his back to face the camera after his and Stan's "north and south" bodily-rearrangement.
Stan is shown putting coal in a burlap sack and then dropping the sack on Oliver's left foot, yet Oliver grabs his right foot in pain.