Ulysse Nardin Marine Chronometer Steel — White Lacquered Dial | Ref. 1183-122-40

The Marine Chronometer collection is, in a very real sense, the reason Ulysse Nardin exists. From 1846 onward, the Le Locle manufacture supplied precision marine chronometers to the naval establishments of more than fifty nations — instruments whose accuracy could mean the difference between safe harbour and catastrophic navigation error on open ocean. That practical heritage is honoured in every Marine Chronometer wristwatch, and this 45 mm stainless steel reference with white lacquered dial is perhaps the most direct heir to that utilitarian tradition. The clean, high-contrast dial arrangement prioritises legibility above all else, a design axiom inherited directly from purpose-built shipboard instruments.

Powering this Marine Chronometer is the Calibre UN-118, a self-winding movement with a 60-hour power reserve indicator — an explicit reference to the traditional chronometer's 56-hour mainspring as measured at full wind and run-down. The oversized seconds hand, a hallmark of the Marine Chronometer design, sweeps across a dedicated sub-register in homage to the independent seconds display common in historical marine instruments, where the seconds were isolated from the timekeeping train to allow for simultaneous observation. Date indication completes the functional brief. The screw-down security crown and sapphire crystal provide environmental protection appropriate for a watch whose identity is intrinsically maritime.

The white lacquered dial creates an almost clinical legibility that is entirely in keeping with the instrument's professional antecedents — this is not a watch designed to flatter under candlelight but to be read instantaneously in any lighting condition. A leather strap with folding buckle ensures secure fit during active wear, while water resistance to 200 metres reflects the practical requirements of a maritime sports reference. At $8,530 the Marine Chronometer 45 mm offers the Ulysse Nardin collector a direct connection to the brand's founding purpose: precise timekeeping in demanding aquatic environments, expressed through a movement architecture purpose-built for accuracy and reliability over extended periods at sea.