Rocking and turbulence
Taking the ocean as the ultimate inspiration, the movement of the UFO is that of the waves made mechanical. The entire structure of the clock is built on an imbalance, on a gentle swing which recalls the ebb and flow of the tides, the perpetual movement of the ocean. The secret of the balance is its blue half-spherical aluminum base, which contains a tungsten mass. The base and glass bell are joined by a bayonet mounting system, which looks similar to the old systems of marine chronometers from which the glass could be unscrewed.
Whereas marine chronometers were housed in wooden boxes and set on gimbles to counteract the effect of the ship’s constant sway, Ulysse Nardin reverses this. Here it is the object itself that makes waves when it is nudged gently. Weighing 7.2kg, the UFO swings up to 60° from its axis – an amplitude of 120 degrees – and the engineers have accurately calculated the center of the gravity/mass/inertia ratio, which allows UFO to swing neither too fast nor too slowly and without significantly affecting the operation of the balance.
It isn’t just the UFO’s movement that is inspired by the ocean, the architecture is too. The bell under which this incredible creation is housed suggests floating black and yellow cardinal buoys – objects that also provide inspiration for the X sitting in the spine of the table clock. From above, the construction of the UFO seems almost kaleidoscopic, with its emblem, the marine anchor, dominating the heart of the rosette.