Hi dada24,

Could you provide some more information about these ships that you have mapped. The tag you have used building=ship is used only for decommissioned ships that became tourist attractions as it can be read here:

https://wiki.openstreetmap.org/wiki/Tag:building=ship

In case these are not that, then they shouldn't be mapped like this and should be deleted. I assume that these ships are simply tourist ships that come here to take or drop off tourists.