S/S Aaro,Royal line

My grandfather left Trondheim bound for Canada 1911-04-26. The ship from Trondheim was S/S Aaro owned by Royal line. Do anyone know if this ship sailed Bergen-Kristiania(Oslo) to Hull in GB? Or did the ship sailed Trondheim-Canada? If he changed in Hull, how can I find the ship Hull-Canada(Quebec?)? My grandfather was from Sweden, his name Oskar Eliasson born 1876-02-25. Kind regards Anders Eliasson Sweden