S.S. Fjordheim

Hello, I recently was sent a picture of the ship that my ggrandfather's brother, Leganger Andreassen, was a crew member of. I have been trying to find out more information about this ship but I do not think that I am searching in the right places. The name of the ship is the S.S. Fjordheim. This is what it says on the photo: Posted on 15 September 1915 To Anton Andreassen Buerstad Nøtterø pr. Tønsberg, Norway "Kronstad 3/9 (1915) Kjære foreldre jeg faar sendt et kort af mannskabet til dere saa faar dere se vordan vi er men vi er ikke alle sammen vi mankerer tre stykker som ikke er med men dere faar se vordan jeg er alligevel jeg har ikke faat noget brev fra dere men jeg har vel et kort at vente hils til alle kjente fra mig Send mig brev oftere og jevnere Skriv snart. Alt vel. Ærbødigst Leganger". Is there anyway to find out about this ship and the crew. I am not even sure which one is Leganger as I do not have any pictures of him and I do not know what he looks like. Any help with this would be great. Thanks in advance, Tina[:)]