Shouldn't be a problem. You will probably need the executor of his estate to sign the titles over to you and maybe a copy of the death certificate. That said, I would call P&W and get the correct information rather than ask it on a forum.
2015 Seaark 1872 MV CC Etec-90
Two Helix 12 CHIRP SI's, , MinnKota Riptide ST80/i-pilot Link, Bob's Hydraulic
2018 Robalo R180 CC, Yamaha 115
Bitter Gun Owner