Ever notice that a carrier sinks in a matter of seconds? This is remarkable unrealistic. Typically, an aircraft carrier can take many hours to sink. As it stands now, if you are on deck when it goes down, there is insufficient time to egress your aircraft.
My suggestion is that the CV sink at a rate equal to the time required for it to spawn again. That way, as soon as it disappears from view, it appears at the port. It's guns would be silent, nothing can fly on or off. Let's have a reasonable model of sinking.
I doubt a non-compartmentized ship like the Mayflower would sink as fast as our CV does.
My regards,
Widewing