And if you’re not using a desktop, get an adapter that connects with a power supply to electrical mains power

Torpedoes rely on sonar for targeting, so as long as they travel below the speed of sound in seawater…

Most welcome. Sorry it took me so long

Iirc for the tv remote to work all you need to do is make sure your CEC options are correct in settings. I use an app on my phone - easier to type searches in.

Xbian on my 4Gb Pi4 running the 64bit bookworm is wonderful.

Xbian is like this too, for Raspberry Pi SBC’s. Kodi keeps getting faster, smoother, more stable, better…all the good things. And it’s brilliant if you still have a non-smart tv and are inclined to sail the open seas flying a Jolly Roger.