Hi!
If a rope is a bit loose then you can untie it and immediately tie it again. But that isn't probably what you meant.
I'll keep this in mind. I'll have to find a way to do this without overcomplicating the user interface.
That's also one reason why I didn't add a Starter/onoff switch (or key or similar) for the engine.Maybe, some time in the future it might be helpful to add some "expert. mode" which then'd allow that an to move the throttle without being in gear (although I don't find any reason why to do this in this simulator).
I'll also have to deal with ropes/chains when the little tugboat (bantam) will finally be added to the game.