if we watch closely we see the ship begin to disappear.
The bottom of the ship disappears first and then the ship seems to sink lower and lower until we can only see the top of the ship and then we see nothing at all
what is hiding the ship from us?
it is the earth Stick a pin most of the way into an orange and slowly turn the orange away from you.
you will see the pin disappear just as a ship does on the earth