United Kingdom offered Endurance to supply Argentina's Antarctic bases after their icebreaker suffered extensive damage in a fire. Although she enjoyed a varied, purposeful career as the UK's sole ice patrol vessel, Endurances later years were problematic and ended in ignominy. After her 2004 docking period in Falmouth, the ship suffered a minor accident which resulted in her listing badly when the drydock she was situated in flooded up. The months after the refit were troublesome and the ship suffered numerous debilitating machinery failures. This was to become something of a theme over the next four years as the ship's crew struggled to keep her serviceable, set against more demanding challenges. Docking in Puerto Belgrano 2006 During survey work in Antarctica in January 2006, the ship's engineering staff discovered that her rudder was apparently loose on the stock. Her work period was cut short and she returned to Mare Harbour in the Falkland Islands for further inspections. Det Norske Veritas, the ship's assurance certification company, instructed that the ship should dock at the nearest available port – the nearest large enough being Puerto Belgrano, Argentina's largest naval base, where Endurance docked in mid-March 2006. Without hotel services on board, the ship's company moved to shore-side accommodation in the city of Bahía Blanca, some twenty kilometres west of Puerto Belgrano. The rudder was removed for repairs, and once it was on the floor of the drydock, a dockers' strike followed. The ship remained there for nearly three weeks. Picket lines formed at the gates of the naval base, preventing the ship's company from relieving the stranded duty watch on board. When the strike broke, the rudder was replaced and welded into position and the ship left Puerto Belgrano in early April 2006. She returned to Portsmouth via Lisbon and to drydock again for further engineering work on the rudder and stock. 2008 near loss In December 2008, while on an 18-month deployment, Endurance suffered extensive flooding to her machinery spaces and lower accommodation decks resulting in the near loss of the ship. A serious engine room flood left her without power or propulsion, and she was towed to Punta Arenas by a Chilean tug. After an extensive survey was completed, the estimates to refit the ship were put at around £30m. On 8 April 2009 Endurance arrived off Portsmouth, on the semi-submersible transporter ship . The Royal Navy inquiry found that