I think it’s real - Corinth Canal.
Although the canal saves the 700-kilometre (430 mi) journey around the Peloponnese, it is too narrow for modern ocean freighters, as it can accommodate ships only of a width up to 17.6 metres (58 ft) and draft up to 7.3 metres (24 ft). In October 2019, with over 900 passengers on board, a 22.5 metres (74 ft) wide and 195 metres (640 ft) long Fred. Olsen Cruise Lines cruise ship successfully traversed the canal to set a new record for longest ship to pass through the canal. Ships can pass through the canal only one convoy at a time on a one-way system. Larger ships have to be towed by tugs.[37] The canal is currently used mainly by tourist ships; around 11,000 ships per year travel through the waterway.[38]
You missed the craziest part, it started being dug in the time of ancient Greece and in fact there’s a commemoration carving of Hercules on one of the entrances.
https://corinthianmatters.org/2016/04/11/on-the-remains-of-neros-corinth-canal-project/
-To be that guy, probably more accurate to call him Heracles when talking about Greek things
It can only accommodate 58ft wide ships but it can accomodate a 74 ft wide ship?
I assume it didnt go through there by itself as you can guess by the ropes tied to the tow ship that is probably pulling it.
Larger ships have to be towed by tugs.
Yes that was addressed in the comment.
