Almirante Maximiano (H41) is an ice-strengthened oceanographic research ship of the Brazilian Navy.

The ship bears this name in honor of Admiral Maximiano Eduardo da Silva Fonseca.

It was built by the Todd Pacific Shipyards of Seattle, Washington, and was launched on 13 February 1974.

Prior to Brazilian service, the ship served commercial operations under the names Ocean Empress, Naeraberg, American Empress, Maureen Sea, Scotoil I and Theriot Offshore I.

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