I am planning to take a cruise that includes cruising in Antarctica waters (Half Moon Island, Paradise Bay, Deception Island) areas.
I have checked out Antarctica caches and there are not any virtual caches that can be logged while on board a cruise ship.
The only virtual cache looks like it is GCA93C near McMurdo Station.
I know there is at least one virtual cache that can be logged while cruising via the Panama Canal so there are virtual caches that exist that can be claimed while on a cruse ship.
How might one establish a virtual cache in Antarctica that can be logged while on a cruise ship?