Passenger Information--Erick N. Steie

Erick Nielson Steie/Stedje and wife, Kari, with their two boys, Niels and Jens emigrated from Fosshaugen in 1856. Is their a specific date of departure? Is there any record of the ship name, the exit port, destination port? Is there any record of the ‘class’ of their accomodations/ticket? Is there any record of other families from Sogndal emigrating on this same ship? Thank you.