Days of the Sea, a feast of seamen, porters, sailors, fishermen and shipbuilders. The first in Poland, in pre-war Gdynia, had a patriotic character (from 1932). After the war, the Central Sea Days were held in Szczecin. The program usually includes a ship parade and artistic performances, including shanties and fireworks.
The program for the edition 2019 will be published on the city's website
https://www.szczecin.eu/en
and general information about the city to visit it throughout the year on
https://en.wikipedia.org/wiki/Szczecin