Uploaded March 2019 | Updated September 2026, 1 week ago

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A 30x speed and stabilized version of my 2nd recording of a ferry disappearing bottom up while sailing away.

The original footage can be seen here youtu.be/CkWaQrtGcjk

Date of footage: 19th March 2019
Ferry: marinetraffic.com/en/ais/details/ships/shipid:155510/mmsi:219017081/imo:9501590/vessel:EXPRESS_1
da.wikipedia.org/wiki/Express_1

The ferry is sailing between Rønne and Ystad, marinetraffic.com/en/ais/home/centerx:14.4/centery:55.2/zoom:9

On a different day (19th of March) I used an app to get the position of the ferry. I made a collage with all the needed data to calculate amount obstructed here https://flic.kr/p/2dVCxfR
Ferry height estimated based on photographs: 24m
Observer height: 4.05m
Distance: 21.6km
Amount hidden geometrical on globe Earth: 16.3m
Amount hidden including std. refraction on globe Earth: 12.9m
Amount hidden observed: ~13.3m