Okay this is probably a stupid Anglophone question, but who named all these "dam" ships. As I understand the place Dutch place names like Amsterdam and Rotterdam actually come from the "town near the dam at the Amstel (or Rotte, etc) river". And that formula follows for many cities in the Netherlands. And a dam is a structure that keeps water out. I'm glad the HAL ships also keep the water out. But, how about Eurodam, Oesterdam, Westerdam and the like. Is there a dam keeping water out of Europe or the North, South, East and West?
Am I missing something or has HAL gotten carried away with the whole dam thing?