If our ship will go beyond the level of the icon is still moving. To fix this we need to create a couple of events:
Event: ship-> It outside layout
action: ship_icon-> Set visible
value= invisible
Event: ship-> It outside layout(Invert)
action: ship_icon-> Set visible
value= visible
Now, if we go beyond the level, the icon will disappear, and if it still may enter reappears.