Europe’s cruise players delivered economic output of EUR 40.2bn ($44.8bn) in 2014, up 2% from the previous year.

But CLIA’s executives stressed the necessity to improve further.

Raphael von Heereman, CLIA Europe’s secretary general, said: "The way certain pieces of EU legislation are applied across Europe can be compared to a patchwork quilt, which is affecting our ability to optimise our ships’ operational efficiency.