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IWC Schaffhausen

Tide Indication

Tide Indication

The tides are a timelessly fascinating spectacle: twice a day, the waves retreat from the shore before inexorably rising again. This natural phenomenon is caused by a complex interplay between the gravitational and centrifugal forces of the moon, the earth and the sun. The time between two high tides is precisely 12 hours and 24 minutes. If, for example, it is high tide at midnight, the next high tide will occur at 12.24. The Portugieser Yacht Club Moon & Tide shows the slightly shifting time for the next high tide on the dial. During the 12 hours and 24 minutes between two high tides, the display disc will rotate by around 24 minutes on its 12-hour scale. The energy required is channelled from the base movement’s hour pinion. A precisely calculated reducing gear comprising three cogs slows the rotation to the point where the tidal disc rotates around its axis once in exactly 14.76 days. The tidal display module is integrated into the 82835 calibre movement and contains 49 parts.

IWC Schaffhausen