Judging from the pictures, the left-most images show ships with junk rigging - Vikings probably used square sails and definitely not junk rigging. Note that central (fourth-from-the-left) ship appears to have oars. I'm not aware of any ocean-going, long-distance European ships having banks of oars in that fashion. Ok - so these aren't Vikings so far.

What about the two on the right? They both exhibit lateen sails and two masts, the left-most ship showing two head sails. This is a variation on the traditional caravel sail format, indeed, the right-most ship appears to have a poop deck which implies fairly advanced naval architecture. Viking longboats were much simpler in their construction and didn't use lateen sails.

This is probably a depiction of European explorers or traders during the Age of Discovery rather than remnants of a Viking expedition.

An interesting question is "Who drew these?" The drawings are pretty detailed and reasonably technical with what looks like reflections of the ships