This reminded me of the Uluburun shipwreck[1]. This ship was built using "pegged mortise-and-tenon joints"[2]. It's not entirely clear how the Nile ship's construction was different -- as another commenter mentioned, it would have been nice if they'd included a diagram.

[1] https://en.wikipedia.org/wiki/Uluburun_shipwreck

[2] https://nauticalarch.org/projects/uluburun-late-bronze-age-s...