Description
Sinn U18
Model: 1028.010
Maritime history on your wrist – After 200,045 nautical miles, reborn as a watch.
• Limited to 1,000 pieces
• Case made of high-strength, seawater-resistant satinised German submarine steel from the decommissioned U 18 submarine
• Bezel with TEGIMENT Technology for enhanced scratch resistance
• Captive diver’s bezel with minute ratcheting
• Tested according to European diving equipment standards and certified by an independent institute
• Water- and pressure-resistant to 2,000 m diving depth (= 200 bar), certified by an independent institute
• Crown positioned at 4 o’clock to prevent pressure on the back of the hand
• Sapphire crystal
• Low pressure resistant
192,842 nautical miles in 38 years – a proud legacy
Commissioned in 1973, submarine U 18 achieved an impressive record: 192,842 nautical miles, meticulously documented by a former crew member. This astonishing figure equals about nine journeys around the globe! After its decommissioning, Sinn Spezialuhren acquired material from the submarine’s outer hull, using it to craft the heart of a unique, limited-edition diving watch. Limited to 1,000 pieces, the watch case is made from high-strength, seawater-resistant steel sourced directly from the U 18 submarine. This makes the submarine not only the namesake of model U18 but also an exclusive material source—and a timeless link to an unforgettable era in German submarine history.
Anniversary: 20 years of diving watches made of German submarine steel
Sinn Spezialuhren has a special, long-standing relationship with submarines. The company has been using German submarine steel for its diving watches for two decades – convinced by its exceptional performance. 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.
Maritime history on your wrist
The steel of model U18 sets itself apart in one key aspect: this base material had previously clocked up decades of naval use, and that’s what makes it so special! 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? A diving watch forged from history, bringing the very soul of naval history to the wrist. Adding to this experience is an engraved steel blank from the original submarine U 18, included with the watch.
All eyes on the high-gloss dial
The U18´s anti-reflective sapphire crystal guarantees exceptional clarity and provides an optimal view of the high-gloss dial, which echoes the mesmerising blue nuances of the ocean. The dark bluish green base tone portrays the esoteric expanse of the open sea from a depth of around thirty metres, alluding to the operating range of the U 18 submarine, which was able to dive to depths of up to 100 metres. Stylised air bubbles that symbolise the rising air bubbles underscore the three-dimensional effect with metallic blues and greens. This variance brings a unique touch to the dial and catches the eye with an intriguing stereoscopic effect. As a historical memoir of the power of submarines, the dial features the number of nautical miles travelled and the U 18´s type designation. The case back is adorned with a matching silhouette of the Type 206 submarine. The U18 has been tested according to European diving equipment standards and certified by an independent institute, ensuring its durability and reliability.
Note about the dial: the unique dial finish on the limited edition U ‘bubble’ series is designed to take on different tones to reflective its environment. The attractive, flat polished, blue-green backdrop fades from dark to light as you move your eye from 6 to 12 o’clock where relief printed, gloss bubbles appear to lift from the dial to resemble the air release of a submarine as it submerges into the depths. Capturing the interplay of air, light, and water in one image is near on impossible however, the image selection gives you an idea of the character this piece delivers, ranging from subtle depths to resplendent colour
Technical Details
Mechanical Movement
• Model: SW300-1
• Self-winding mechanism
• 28,800 semi-oscillations per hour
• 25 bearing jewels
• Seconds stop function
• Anti-magnetic as per DIN 8309
Case
• German submarine steel from the decommissioned U 18, satinised
• Diver’s bezel made from the same steel, satinised/polished
• Anti-reflective sapphire crystal glass (front)
• Screw-fastened case back
• Screwable crown
• Water-resistant and pressure-resistant to 2,000 m (200 bar), certified by an independent institute
• Complies with DIN 8310 water resistance standards
• Conforms to German diving norm DIN 8306
• Tested under European diving equipment standards EN 250 and EN 14143
• Low pressure resistant
Functions
• Hours, minutes, seconds
• Date display
• Diver’s bezel with minute ratcheting and luminous key mark
• SINN Technologies:
– Bezel with TEGIMENT Technology for superior scratch resistance
– Captive bezel
– Ar-Dehumidifying Technology for enhanced reliability and resistance to fogging
Dimensions and Weight
• Case diameter: 44.0 mm
• Band lug width: 22 mm
• Case thickness: 15.5 mm
• Weight without strap: 114 grams
Dial and Hands
• Colour: blue-green
• Indices with luminescent coating
• Hour, minute, and second hands with luminescent coating
