Tow to the bottom of the world: Delivering a pier to Antarctica

The ocean tug Rachel maneuvers NSF Discovery Pier into Lyttelton, New Zealand, in late January, before departing for Antarctica. The 328-by- 100-foot structure was towed more than 9,200 miles from Portland, Ore., to McMurdo Station following multiple stops, including the South Island port.

Capt. Justin Gustafson in Antarctica in February. The 50-year-old tug Rachel was holding position in

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