sailors in brooklyn

hi i'm trying to find out more about my grandfather. he was born in brooklyn i 1894; norwegian parents. they left for norway the next year. he probably went back to america around 1910, were he lived while beeing a sailor until 1932, this information i have from my mother, the only fact i have found is that he arrived ny in 1924, ellisisland, it says there that he lived in sailor's home, ny... does anybody have some advice for me how to find out more? sigurd