You haven't given a ''well known fact.''
Once a ship or boat has sailed over the horizon from you vantage point, the most powerful telescope is of no use, the ship has dropped from your view, it is over the horizon.
As I said, the only way to see it again is gain elevelation, move to a higher point, a hill or tower, hop onto an aircraft.
If you think that just using a more powerful telescope will make the ship appear again, you are wrong.
Where did you get such an idea?
If you think you have evidence, please show the evidence , show your readers that a ship sailing away will always be visible if you have a telescope powerful enough.
I eagerly await your proof.
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