Naval architect Per Fagerlund, known in the industry as Mr Roro, has died at the age of 80.

The Swede was born in 1939 into shipping as a master's son and went on to pioneer revolutionary designs for cargo vessels — and helped to develop methanol as a green fuel in his later years.

Fagerlund went to sea early as a cook’s assistant on the auxiliary sailing ship Ann from Farjestaden.