Personally, I think they were trying to set up some conflicts for season 2 and they did a sloppy job of it.

The Queen Mary and the Rogue Wave.
.....On December 8, 1942, a year and a day after the attack on Pearl Harbor brought the United States into World War II, the RMS Queen Mary left New York with over 16,000 American troops heading for Gourock, Scotland, 3,000 miles across the stormy Atlantic. A 1,000 feet long and 81,000 gross tons (cargo volume), she was the fastest ocean liner in the world. She could reach any British port in just five days (compared to two weeks for convoys of Liberty ships) and she could outrun any German U-boat. It was a sunny day with bands playing, crowds cheering, and fireboats shooting streams of water high into the air as she cruised past the Statue of Liberty and out into the Atlantic. By the fourth day at sea, however, the weather had turned foul and high winds generated huge waves. The Queen Mary was carrying seven times the normal number of passengers along with weapons, ammunition, and other equipment, most of it above the waterline. That made her top heavy, and her stability problems only got worse as the voyage went on, because the oil she consumed came from fuel tanks located below the waterline. So Mary pitched and rolled, and thousands of landlubber soldiers were overcome by seasickness. Their bunks became immersed in the smell of vomit, and the ship’s hospital was overrun with dehydrated soldiers.
.....The next day the howling winds reached hurricane strength. As far as the eye could see the Queen Mary was surrounded by an angry ocean with white frothing peaks and deep dark valleys. She shook viciously each time she climbed up an enormous wave crest and then fell forward into a deep wave trough to be pummeled by the next wave. Water was everywhere on the ship’s decks, from the spray as Mary’s bow crashed down on the next wave and from the high winds shearing off the tops of waves and throwing water at the ship. And through it all, the soldiers remembered what they had been told. Do not go near the railings, because if you fall over, you are lost. For even if you survived the fall (65-five feet from the main deck), and then survived the icy Atlantic waters (numbness and incapacitation setting in within a few minutes), the ship would not stop to look for you. With German U-boats everywhere, 16,000 lives would not be risked to save one.
.....But the worst was still to come. About 700 miles from Scotland, the Queen Mary suddenly fell into an almost bottomless pit. She was then broadsided on her port side by a monstrous wave crest that was at least twice as high as any wave she had encountered. This mountain of water shattered windows on the bridge, 95 feet above the waterline. It tore away all the lifeboats on the port side of the top deck. It broke through portholes, sending water rushing into hundreds of cabins. But most seriously, the weight of this stupendous wave, many thousands of tons of water, slowly rolled the Queen Mary over farther than she had ever rolled over before. The lifeboats on the starboard side swung down with the ship and almost touched the sea. Soldiers on the lower decks of the starboard side looked out of their portholes and saw dark seawater. Many were thrown out of their bunks and broke arms and legs or suffered concussions. In the dining rooms, chairs slid from one side to the other, and dishes and glasses shattered. For the soldiers at antiaircraft positions, a hundred feet above the waterline, the scene they witnessed was especially harrowing. Those on the port side stared in disbelief as a mountain of water appeared to come right at them, and those on the starboard side were one minute a hundred feet high and the next swinging wildly through the air until they almost touched the ocean itself. Soldiers slid out doorways riding torrents of water from broken portholes. Many soldiers threw on life preservers, convinced the ship had been torpedoed. When Mary had listed over on its side farther than any ship’s crew had ever experienced before, and when she seemed to stay there for an eternity, those seamen figured that the ship would never right itself again. In fact, according to later calculations, if the Queen Mary had listed over only three more degrees, she would have capsized. If she had capsized, she would have almost certainly sunk, taking with her 16,000 lives and instantly becoming the largest maritime disaster in history. A tragedy was apparently avoided, only due to the “exceptional seamanship on the part of her bridge officers ... a quick turn of her helm [so that] her bow was brought dead on to this exceptional wave.” Decades later such a uniquely monstrous wave would come to be called a rogue wave or a freak wave. Many disasters caused by rogue waves would be reported (and often not believed), and many ships would not be as fortunate as the Queen Mary.
.....[See the book for more of this story and references, for other stories involving rogue waves, and for the latest thinking on what causes them.]