Continuity mistake: When Bugs Bunny and Yosemite Sam are in the rowing boat at the end of the cartoon, the number of labels on the side of the boat changes between shots.
Continuity mistake: When Bugs Bunny is arguing with Yosemite Sam about who should swab the deck, the background behind Bugs and Sam keeps changing between shots.
Continuity mistake: When Sam puts his pistol against Bugs' nose, you can see there is graffiti saying "The Captain is a Shnook" behind him, but after a quick cut to Bugs, we return to Sam and the graffiti has disappeared.