Push barges occupy an important position at Port of Amsterdam. Literally, since they take up about 100,000 m2 of water surface area. There are currently enough places for over 100 push barges. And that sometimes means having to compromise on space. That is why Port of Amsterdam has developed the...
https://www.hellenicshippingnews.com/saving-on-harbour-dues-for-push-barges-with-poseidon/