Ship Names/Owners?

Can anyone help I am still chasing information regarding ships to Australia! I have also another problem with two names! The following is the information that I have, Thomas Olsen Homlstad sailed on Bark Nomen 1886 born/came from? Vang Hedemarken. Thomas Olsen passenger Bark Nomen 1886? Residence Vang. Both of the above we listed as "Age Adult"? What does this mean? The next was Thomas Olsen Thostad age 21 Bark Kong Sverre 1871. Resedence Vang (farmer) Can you tell me how I can find out if there is a connection between them? How do I find out if the Ships named came to Australia OR went somewhere elese? Also were they owned by the Olsen Family members before Fredrik Olsen started the "Olsen Line" in 1886? ANY Help woud be Appreciated! Regards to All, Tug