Maybe it was earth all along?

Find a replacement motor, when asked

Save game progress using the typewriter

Use the ladder like a boss

Wake up Sub Lieutenant Jones

Crash into ejected fuel cell when at the controls of the HMSS Imperialise

Attempt to mix washing up liquid and tea

Examine the Gravity Simulation Switch

Commence your mission on board the HMSS Imperialise!

You have been awarded the platinum trophy.

Congratulations! You have completed Nubla Part One.

You are taking your first steps in a new world.