1882 departure Stavanger

Ooops! hit the wrong button! Still looking to see if anyone has any suggestions for finding a ship/passenger list on my Great, Great Grandfather, Halvor Halvorson born: 1840 wife: Abigal/Abigael Andersdatter born: 1842 & (7) children. Have them on emigration out of Stavanger/Digitalarkivet 1882, but no mention of ship to trace..might have traveled and boarded a larger vessel out of England. Dont know where they landed either...more suggestions are welcome!!! [8)] Stacey