Issued in an entirely hand-finished 10-piece limited edition, the impressive Academy Christophe Colomb Hurricane Grand Voyage thus pursues its flamboyant evocation of the adventures of the Italian seaman – which it undertook in 2013 with the first Grand Voyage version featuring a unique and splendid decor. On a technical level, this creation sets the stage for three major breakthroughs in watchmaking history: a patented Gravity Control system, fusée-chain transmission, and an exceptional frequency of 36,000 vibrations/hour.
While the dial itself is the unmistakable signature of a work of excellence, the back of the Academy Christophe Colomb Hurricane Grand Voyage II harbours its own sources of wonderment. Providing a vivid and subtly layered portrayal of the adventures of the famous Italian explorer, this superb miniature highlights the virtuosity of the most brilliant artisans. Secured to the movement by a sophisticated system of gold appliques, this painting brilliantly illustrates Christopher Columbus’ discovery of America in 1492. Created around the mechanism reminiscent of the gimbal suspension system on marine chronometers, the foreground of this tiny work reveals the effigy of Christopher Columbus brandishing the flag of the Spanish monarchy, surrounded by palm trees, two natives offering him exotic fruit, as well as a parrot.
The hand-engraved décor portrays the discovery of America with an amazing abundance of details. In the foreground are finely hand-engraved portraits of Christophe Columbus and natives greeting him. The palm trees, the parrot with its wings unfurled and the fruit display spectacularly realistic details and colours.
While Christopher Columbus pushed back known horizons, the watch bearing his name also rolls back the limits of time by combining three mechanisms guaranteeing enhanced precision: a regulating organ with a high oscillation frequency (36,000 vibrations/hour) dividing time up into tenths of a second; a fusée-chain transmission system compensating for the barrel’s variations in force while it is unwinding; and a patented Gravity Control module serving to neutralise the effects of gravity on the rate of a watch. In other words, it successfully solves the problems relating to wearing the watch (gravity) and to its running time (leading to a drop in torque), while ensuring remarkably precise time measurement (related to the oscillation speed of the balance). These feats are achieved by an exceptional movement comprising 939 parts, including 354 for the calibre itself, which in turn houses the 173 parts of the Gravity Control module; while the fusée-chain system comprises 585 parts.
The majority of 16th , 17th and 18th century pocket watches were equipped with a fusée, but today very few watch manufacturers are capable of transposing and fitting this mechanism within the confines of a wristwatch. With the Academy Christophe Colomb Hurricane Grand Voyage II, stemming from two full years of development, Zenith has now entered this highly exclusive club. Transmission between the barrel and fusée is handled by an 18 cm-long chain comprising 585 parts. This highly complex construction features alternating double and intermediate links. Once assembled, it is capable of withstanding a traction force of more than 3 kilos.
Throughout the power reserve, the mainspring transmits its energy to the fusée via a chain that wraps itself around the barrel. By adjusting the variations in tension, the fusée regulates the force that is passed on to the going train – and thence to the silicon escape-wheel fitted inside the gyroscopic carriage. While it takes more than 50 hours (the power-reserve duration) for the chain to wrap itself around the barrel, winding via the stem provides a fascinating sight. These few seconds enable the fusée and the barrel to turn in opposite directions so that the chain wraps itself back around the fusée.
The shape of the fusée was dictated by the optimal force that the Zenith master watchmakers wished to give the barrel. Its grooved contours as well as its dimensions are the result of lengthy and particularly complex complications performed for each of the seven construction stages. This fusée could doubtless never have been created without the full integration of all professions (notably including movement prototype making) cultivated in the Manufacture Zenith, nor without the use of sophisticated equipment. Such is indeed one of the core strengths of an integrated Manufacture.
While fusée-chain transmission eliminates variations in isochronism (the equal duration of the oscillations), the Academy Christophe Colomb Hurricane Grand Voyage II also cancels out another effect that is detrimental to the rate of a mechanical watch: the influence of gravity. Working on the principle that keeping the regulating organ in a horizontal position engenders the best possible balance-wheel amplitude, that the rate is adjusted in only one direction and is not therefore the result of a compromise, and thus results in optimal timekeeping precision, Zenith devised and patented a revolutionary module enabling the “heart” of the movement and the escapement to remain constantly in this position.
An avant-garde system brilliantly illustrating the creative daring of the Manufacture, the Gravity Control system is also a tribute to history, since it is inspired by the marine chronometers that Zenith used to produce, borrowing from these legendary instruments the principle of gimbal suspension introduced in the 16 th century on marine compasses so that they would stay horizontal despite the pitching and rolling of the boat.
The Gravity Control system with its self-regulating gyroscopic mechanism serves to maintain the regulating organ in a permanently horizontal position whatever the angle of the wrist and thereby represents the ultimate evolution of the marine chronometer. The brand with the guiding star is the only watch manufacturer to master this system – duly rewarded in the “Best Complicated Watch” category at the 2011 Grand Prix d’Horlogerie de Genève – that it invented after five years of intense development.
The Academy Christophe Colomb Hurricane Grand Voyage II comes in a precious mahogany box featuring ox bone inlays and that can also serve as a humidor with a capacity of 80 cigars. In tribute to Christopher Columbus, this box is adorned with a screen-printed motif on parchment-style papyrus reproducing Waldseemüller’s planisphere (1507), the first world map to mention the name “America”.
Model: Academy Christophe Colomb Hurricane Grand Voyage II
10-Piece Limited Edition
El Primero 8805, HAND-WOUND
A unique gyroscopic mechanism that maintains the regulating organ in a perfectly horizontal position
Calibre: 16 ½ ‘‘‘ (diameter: 37 mm)
Thickness: 5.85 mm
Gyroscopic carriage composed of 173 parts
Chain made of 585 parts
Frequency: 36,000 VpH – (5 Hz)
Power reserve: minimum 50 hours
Hours and minutes in an offset subdial at 12 o’clock
Self-regulating Gravity Control module at 6 o’clock
Small seconds at 9 o’clock
Power-reserve indication at 3 o’clock
Fusée-chain transmission beneath the hours/minutes dial
Case, dial and hands
Material: 18-carat rose gold
Diameter: 45 mm
Thickness: 14.80 mm / 21.80 mm (with domed sapphire crystal)
Glass and back: domed sapphire crystal with anti-reflective treatment on both sides, domes protecting the Christophe Colomb module
Water resistance: 3 ATM
3 enamelled gold subdials
Hour-markers: black lacquered
Hands: blued steel
Strap and Clasp
Brown alligator leather strap with rose gold triple folding clasp