In 1906, at the United States Naval Observatory in Washington, Ulysse Nardin chronometers took the top seven places out of 31 chronometers presented.
In 1907, at the United States Naval Observatory, 83 American, English, French and Swiss competitors submitted pieces for Deck Chronometer competition. The tests took place over five months and the House set the performance record. As a result of this achievement, the brand entered the US market by becoming a supplier to the US Navy.
In 1908, at the United States Naval Observatory, Ulysse Nardin chronometers won first place. The US government then bought nine of the sixteen pieces submitted for the competition.
In 1915, at the United States Naval Observatory, Ulysse Nardin won first place out of 60, and set the performance record. At the same competition, Ulysse Nardin won the top three places from a field of 217 deck chronometers entered in the contest.