Sinn U18

Diving watches made from submarine steel – Transformed into timepieces after hundreds of thousands of nautical miles
Is there anything more fascinating than wearing a piece of German submarine history on your wrist? The U15, U16 and U18 diving watches embody much more than timekeeping – they are testimonies to a key chapter in the history of the German Navy. Made of steel from the like-named U 15, U 16 and U 18 type 206 submarines, they are steeped in history and are guaranteed to delight naval enthusiasts and watch connoisseurs alike.

Veritable legends
These underwater vessels are much more than steel giants. They are veritable legends, shaped by the challenges of nearly forty years of continuous service to Germany – longer than any other type of submarine. Their mission? To protect the Baltic Sea and its access routes. Each submarine churned through hundreds and thousands of nautical miles both above and below the water. Now decommissioned, they become the very essence of these three unique diving watches: the steel for the cases. At the same time, they give the watches their name, presenting a pure source of material and truly indelible link to an unforgotten era in the history of German submarines. After all, each of the watch models is made of steel from their eponymous submarines.

The U 15 submarine on the day of its final voyage from Kiel naval port to Kiel Osthafen, home to KSH GmbH.
View of the trim system of the Type 206 A U 15 submarine. One of the tasks of the trim system was to adjust and monitor the weight of the underwater vessel.
A true tribute
As a result, the watches are a true tribute to bygone times, and everyone who decides to purchase one of these unique timepieces will not only have a piece of maritime history in their hands. It also immortalises the memory of the U 15, U 16 and U 18 submarines and the generations of crew members who faithfully served on them. It is also a homage to the masterful engineering that kept these underwater titans working so reliably for decades.

The soul of naval history: 20th anniversary
Our diving watches made of German Submarine Steel
Looking back: We have been using submarine steel for our diving watches for two decades – and are still in awe of its extraordinary performance today. The special grade of steel developed by ThyssenKrupp for the outer hulls of the Type 206 submarine and the world’s latest non-nuclear Type 212 submarines has formed the basis of all of our U series since 2005. It is supplied as a semi-finished product with the required dimensions and structural properties and is therefore free of any signs of use. This presents a key difference to the U15, U16 and U18 models – their base material had previously clocked up decades of naval use, and that’s what makes it so special! This steel has felt the force of the waves, knows the strength of the storm and is no stranger to the cold silence. It has felt the pressure of the deep, the unrelenting hardness of seawater and the constant assault of fouling and mussels. In short, this steel breathes submarine history.

The professional, meticulously intricate finishing by the Saxony-based watchmaking technology company Sächsische Uhrentechnologie GmbH Glashütte ( SUG) ensures that it meets our stringent requirements without losing its true identity.

The result? Three diving watches that definitely have wind in their sails. They bring the very soul of naval history to the wrist. For everyone who values tradition and wants to wear it with pride. An engraved steel blank from the original submarine accompanies every watch, enhancing the sensory experience further.