The southern 'border' between Laubeuf Fjord and Marguerite Bay is formed by the line between Rothera Point, Adelaide Island, and Cape Sáenz, which is the southernmost point of the Arrowsmith Peninsula. The fjord was discovered by the French Antarctic Expedition, 1908–10, under Jean-Baptiste Charcot, and named by him for Maxime Laubeuf, a French marine engineer who supervised building the engine for the ship Pourquoi-Pas.
The southern edge of Laubeuf Fjord and Marguerite Bay is demarcated by the line from Rothera Point on Adelaide Island to Cape Sáenz, which indicates the southernmost point of the Arrowsmith Peninsula. The fjord was identified during the French Antarctic Expedition conducted by Jean-Baptiste Charcot in 1908-1910 and named after Maxime Laubeuf, a French marine engineer responsible for engine construction on the ship.