NOMOS Glashütte Ahoi watches

The Nomos Glashütte Ahoi is the brand's watch for the water. It grew out of Nomos's aim, in 2013, to build a dive-capable watch, and it is rated to 200 metres, but it is not a conventional diver: there is no dive bezel, and the design borrows from the Tangente rather than from the tool-watch tradition. The steel case stays around 10 mm thick, the lugs leave the upper half of the case and turn sharply down at about 45 degrees, and triangular guards flank a small crown. The hands and numerals are luminous, though the lume is not at the level of a dedicated dive watch.

The full-size Ahoi measures 40 mm and comes as the plain Ahoi or the Ahoi Datum. The Ahoi Atlantik Datum (558) runs on the in-house automatic DUW 5101, with a 42-hour power reserve and a trapezoidal, dial-coloured date window. The date has no quickset: it is advanced by moving the hands back and forth between 10 pm and 1 am. The 558 takes a 20 mm strap. The Ahoi Neomatik is the smaller watch, 36.3 mm across, built around the automatic DUW 3001, a movement just 3.2 mm high with a 43-hour reserve; the Neomatik Atlantik (567) takes an 18 mm strap.

The Atlantik dial started as a dark, textured blue-grey with gold hands and print; the later Atlantik is a true blue with white print. Signal Blue, Signal Red and Siren White are further colour versions, and the Open Back and Closed Back names separate otherwise matching watches by their caseback. The special editions include the ZEIT Sonderedition in grey or Atlantik blue, limited to 500 pieces each, a 50-piece Ahoi Datum Chronometer WatchTime edition, Bucherer editions of the Atlantik and Neomatik Atlantik in runs of 74, and Doctors without Borders Germany versions of the Ahoi Datum and Ahoi Neomatik.