NOVEMBER 3, 2025 – Naval Mobile Construction Battalion (NMCB) 3 is currently deployed to Antarctica as of October 5, 2025, in support of OPERATION DEEP FREEZE, continuing their crucial support for the National Science Foundation (NSF).
This deployment advances the multi-phased construction of a new, longer-term loading and offloading infrastructure solution at McMurdo Station, offering a more reliable alternative to the previously weather-dependent “ice pier”.
This ongoing project ensures the safe and efficient delivery of essential supplies to McMurdo, the primary logistics hub for the U.S. Antarctic Program (USAP) and a vital base supporting scientific research across the continent.
Building upon previous deployments focused on initial site surveys, foundational work, and extensive custom welding requiring specialized training between Seabees and civilian specialists, this phase concentrates on installing piles for the support system and preparing for the installation of the bridge and walkway sections.
This project employs a military-contractor delivery model, with Seabees collaborating with civilian contractors. The Seabees’ expertise in specialized construction tasks and proven ability to operate in harsh conditions are essential for successfully completing each phase.
This phased approach to replacing the temporary Modular Causeway System, currently installed annually by the U.S. Army, significantly reduces risks associated with the aging infrastructure.
This sustained effort underscores the long-term commitment of the NSF and the U.S. military to advancing scientific exploration in Antarctica. NMCB-3’s consistent involvement exemplifies their dedication to excellence and their vital role in supporting this critical national objective.
Story by Petty Officer 1st Class Austin Ingram
Naval Mobile Construction Battalion 3