In a game using ticks, maybe either have a longer time until you get logged off (waiting for only one day in background requires reloading the entire page) or maybe place a reconnect button in the game.
"Arrow keys to move" - Ye, just usually left moves you to the left, right to the right and so on...
If you had called this 'controls' I might have laughed though. Rarely felt less in control of what actually happened than here.
I agree with the comments that say it is unplayable. It's very hard to control your ship. You will not get usable results with this, because a) People won't be playing this for long, and b) It is nearly impossible to do the tasks after you have decided if the keyword is matched or not. You will get a lot of wrong results, because someone just shot a freighter by accident.
Guess you will cure a thousand people from being afraid to fly. But one poor guy will never be able to board a plane in his life after crashing here :P