Iver Andreas Larsen

My Great Grandfather Iver Andreas Larsen was born in Fana Hordaland in 1854. On the 1875 census he was a fyrboter and was still living with his mother Malen Andreasdatter in Fana. They are both gone by the 1900 census. Howevwe niether are shown as leaving in the out emmigration records 1877-1889 My iver was married in Washington State in 1891 and died in 1922 in Wenatchee Washington USA. I want to know if the Merchant Marine Records would help me locate his employer and the ship he worked on? Any information would be helpful. Cynthia Warde