In page 74 to 80 why does one of the crew members slam his fist down on the railing and storm off

In "Refugee" by Alan Gratz, on pages 74-80, the crew member, Schiendick, slams his fist down on the railing and storms off because he is angered that passengers are being shown downstairs, implying a potential for a change in their plans or a negative turn of events on the ship.