Carl Johnson

I have done extensive research to find my g grandfather, Carl O. Johnson. He left Trondheim, Norway approximately May 26 - June 11,1873 on the ship "Tasso" arriving at Hull. He would then needed to boarded a ship from Liverpool to America on a corresponding ship. I haven't been able to locate what ship he traveled on. I would appreciate any advice or information on the name of the ship and where he landed. The next time I find him is teaching school in Argyle Township, Lafayette County, Wisconsin.