Looking for information on Joseph Kolin

Hi I am looking for information about my pop who apparently was a cabin boy on the SS Geiser and jumped ship in Fremantle western Australia in around 1912. On all the records we have of him eg my dads birth certificate, applications for volunteering in WW2 state he has stated was born Joseph Albert KOLIN, born in Flekkefjord, Norway on 24 0ctober 1898 however I can find t no record of him. My DNA show 19 per cent Jewish genetics on my paternal side so I am presuming pop had Jewish ancestors. Any ideas of how we can find more information about him would be greatly appreciated as I have no idea where to search next.