I won’t get too into the weeds here as it may be upsetting for many, but the gist of the situation can be explained below.

After a night out drinking as a crew after a long charter, Margot, a stew on the interior staff, went to her cabin bunk to sleep it off. While she was seemingly unaware — because she was sleeping! — and unable to communicate any type of consent, we watched as the bosun (a man named Luke) went into her cabin naked, crawled into her bunk, and crouched over top of her before eventually lying down beside her. Production and camera crew immediately stepped in telling him to leave her alone, and Luke reacted angrily by attempting to shut them out of the room by slamming the door in their face multiple times. Aesha Scott, the chief stew, witnessed him eventually coming out of Margot’s cabin naked after being told to leave by production. And once she realized what had happened, she immediately brought it to the attention of Captain Jason Chambers in the middle of the night after making sure Margot was safe. Captain Jason sprung into action — first asking if both Aesha and Margot were ok — and then getting Luke off the boat the very same night and terminated his employment the very next morning. He also only allowed Luke back on the ship when he knew the rest of the crew was silo’d into a single area and none of them would come into contact with each other. 

Source: https://www.buzzfeed.com/laraparker/fan-reactions-below-deck-down-under-luke-margot