The top part or roof if you will…
two lateral rotating propellers
I tried, but I just couldn’t let it go.
It’s not a “roof” it’s the deck hatch. (The “roof” is the deck, the hatch is the thing that opens.)
Those propellers are called “Screws” (“propellers” are things you put on airplanes).
And one more thing- Look up. No, seriously, look up. ¿see that thing over your head? ¿Maybe you call it a “Ceiling”? Ya, that’s the “Overhead.” Like, “It’s over your head.”