boat key (Hitman (2016))

Somewhere on the second floor, in one of the offices, on a writing table. Unfortunately, I can't say more precisely, I forgot.

the same wing as the room with the sheikh, 2nd floor, key on the table

and how to delete recordings from cameras?

If anyone else needs it. The keys to the boat are in the artist's office (as the user wrote above, in the sheikh's wing). Landmark, 3 easels and 3 boards.