Worsley ran a relatively relaxed ship with little discipline or control of alcohol consumption. Four crew members got into a barroom brawl at a stopover in Madeira, a neutral port. While anchored in the harbour, a neighbouring German ship swung into the "Endurance", damaging it. Worsley, enraged, boarded the German ship with some other members of the expedition and forced the crew to repair the damage caused. Shackleton, briefed on Worsley's handling of the voyage to date once he had caught up with the expedition at Buenos Aires, began to have concerns about his choice of captain. Worsley was to be in command of the resupply expedition for the party that was to winter over in Antarctica, but Shackleton began to doubt whether his leadership skills were sufficient to achieve this. After resupplying at Buenos Aires, the "Endurance" left for the remote island of South Georgia, in the South Atlantic, on 26 October. It duly arrived at Grytviken Station, a Norwegian whaling outpost, on 5 November. The Norwegians confirmed initial reports from Buenos Aires that the Antarctic pack ice was much further north than usual. Shackleton followed the Norwegians' advice to delay departure until later in the summer, and it was not until 5 December that the "Endurance" steamed south for the Weddell Sea. The "Endurance" encountered the pack ice three days after leaving South Georgia, and Worsley began working the ship through the various bergs. On occasion it was necessary to ram a path through the ice. Progress was intermittent; on some days little headway was made while on other days large stretches of open water allowed swift passage southwards. Worsley would often direct the helmsman from the crow's nest, from where he could see any breaks in the ice. It was during this time that Shackleton realised that Worsley's temperament was less suited to giving orders than to following them, which he would do with the utmost determination. On 18 January 1915, the ship became iced in. Within a few days, it was apparent that the "Endurance" was held fast and was likely to remain so for the upcoming winter. Trapped, the ship slowly drifted westwards with the ice, and the expedition settled in for the winter. The original plan had been to leave a shore party on the Antarctic mainland while Worsley took the "Endurance" northwards. There had been no expectation that the entire expedition would live aboard the ship in the long term.