Crossword clues for Port on the North Sea. 6 lettersAnswerClueOSTENDNorth Sea port.OSTENDNorth Sea port and resort.OSTENDPort on the North Sea.EMDENNorth Sea portABERDEENNorth Sea portOSLONorth Sea portABERDEENNorth Sea oil portEMDENGerman port on the North Sea.