Yes debug mode still work had to use it last night to retrieve my ship after my cat turned off my pc walking around on top of it last night when I was selling in my ship lol. The developers really need to fix that if you crash or power goes out or something when you are in your boat when you log back in you wake up in your base and not in your boat. The Developers really should consider make a legit way to get your boat back when playing single player when something happens like mentioned above. how about a portal on your boat?

Set the launch option first to enable devcommands
Maybe its best you look at the guide.
https://steamcommunity.com/sharedfiles/filedetails/?id=2433469044

First use "devcommands", then "debugmode"

I believe I saw somewhere on these forums that the console commands no longer work. Don't quote me on that though.