Montebello + ? for USA 1906 and 1907

3 brothers from Kjernsbaek, Skiptvet, Ostfold emigrated between 1900 and 1907. The eldest is easy to find because he skipped the farm's name. His brothers used Kjernsbaek according to Norwegian emigrant database. ANTON Hansen b 1878 went by 'Montebello' from Kristiania July 13 1900 to Hull. Then from Glasgow with 'State of Nebraska' July 19, 1900 and arrived at Ellis Island August 2 1900. He was a skilled electrician. I know his descendants. Worked mainly in insurance in the USA and settled in Pennsylvania in 1906. He died 1952 in Harrisburg PA. No problems tracing him! The second to leave Kristiania was JOHAN Arnt Hansen Kjernsbaek b 1886. He left with 'Montebello' from Kristiania on March 2, 1906. Agent Elster. Emigrant prot. Norway: Destination Pennsylvania. The last of these brothers to leave was GUNNERIUS Hansen Kjernsbaek b 1882. He also went by 'Montebello' with agent Elster. Gunnerius left Kristiania April 20, 1907. Emigrant prot. Norway: Destination Pennsylvania. Both Gunnerius and Johan Arnt left from Norway on 'Montebello' with agent Elster. I simlpy can not find them in the Ellis Island Records. My questions are 1) what ship would they cross the Atlantic with? 2) which port did the ship arrive at in America? I hope some of you can give me information.