The introduction of fuel cells represents another dramatic step forward for the maritime industry, according to Royal Caribbean.

The US cruise giant says the industry has only made limited experiments using the technology, despite its wider use in other forms of transportation.

“We believe fuel cells offer very interesting design possibilities,” said Harri Kulovaara, Royal Caribbean’s chief of ship design.

“As the technology becomes smaller and more efficient, fuel cells become more viable in a significant way to power the ship’s hotel functions.

“We