Alfred Heins in Norway

Alfred Heins' New York City naturalization record shows that he arrived in the US April 16, 1871, that he was born in Norway August 30, 1854, and that he was a dock builder. In the records of the Norwegian Historical Data Centre I find one Alfred Hein, son of Nils Hein, but the birth year is 1852 in Oiestad. Would someone please check to see if the month and day are August 30? I cannot locate a ship record or other records in Norway. Would appreciate any leads. Thanks, Donna [I have no information about this man other than what I have found in US records. He is my husband's great-grandfather, but we are unaware of anyone who could tell us about him.]