Military Sealift Command Delivers Needed Cargo to Antarctica

View Online Military Sealift Command Delivers Needed Cargo to Antarctica Feb. 12, 2026 |  By Sarah Cannon, Military Sealift Command Pacific The Military Sealift Command chartered heavy lift ship Plantijngracht is conducting cargo offload operations at McMurdo Station, Antarctica, as part of MSC's ongoing support of the annual Antarctic resupply mission: Operation Deep Freeze 2026. The Plantijngracht arrived in Winter Bay, Antarctica, Feb. 4, where its crew offloaded a 65-ton floating modular causeway system. Sections of the system were assembled on the ship's deck before being offloaded, connected and floated into place by the Army's 7th Transportation Battalion. The causeway is being used instead of the traditional ice pier this year due to the size and weight of the ship's cargo.    While the focus of the mission is on cargo delivery, the causeway system came with its own unique set of challenges that planners had to anticipate and account for to ensure a smooth operation. "The [causeway system] adds to the overall timeline of the cargo offload. It takes approximately three to four days to build at the start of the operation and the same amount of time to break down at the end," said Marie Morrow, the ship's liaison to the Joint Task Force Support Forces Antarctica staff. "Weather starts to deteriorate quickly in the second half of February, as the summer season comes to a close, so those extra six to eight days can increase the likelihood of weather challenges." Once the system was in place and secure, the ship was met by members of Navy Cargo Handling Battalion 1 and cargo offloading operations began. The ship is delivering 372 pieces of cargo, consisting of containers filled with dry goods and supplies needed for survival at the remote Antarctic outpost. Logistical moves are nothing new for Military Sealift Command; in fact, around the world, they are almost a daily occurrence. However, moving cargo in the harshest environment on Earth is a mission unto itself. Antarctica is known for its bitterly cold temperatures, harsh winds, ice conditions and weather that can change in a matter of minutes. All factors that need to be considered as operations unfold. "The austere environment adds a lot of challenges to the operation. Unpredictable weather conditions, freezing cargo gear and high winds are common hurdles faced in the cargo operation. Ice conditions vary from year to year and bring different problems," Morrow said. The presence of thick ice can slow down the ship's arrival at the station. Little to no ice or open water conditions can cause shoreside erosion at the wharf. "To handle all of the challenges, we control what we can within the operation," she said. "We use past lessons learned to handle challenges that come up." Following the offload, the ship will be loaded with containers of retrograde cargo for transportation off the continent. This includes trash and recyclable materials for disposal and equipment no longer required at the station, as well as the causeway system. Before departing McMurdo Station, the crew will also load ice-core samples that will be stored on the ship in a subzero freezer. The samples will be delivered to the U.S. for scientific study.    "The cargo delivery from California to Antarctica is one of the longest supply chains in the world. The ship plays a huge role in delivering cargo that supplies and sustains multiple stations on the continent," Morrow said. "The crews are always quite enthusiastic to be a part of such a unique and remote operation. For most, it is a once-in-a-lifetime opportunity."

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