Norwegian cruise industry legend Knut Kloster died on Sunday at the age of 91.

Heralded as the father of modern mass-market cruising and giant cruiseships, he was also known for his devotion to humanitarian endeavours and the environment.

Right from his birth, shipping was always in Kloster's blood. For three generations, the Kloster family had been shipowners.

Kloster, who held a degree in marine engineering from the Massachusetts Institute of Technology, took the helm of Klosters Rederi at the age of 30 following the death of his father.