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Results for Marine Chronometer & The Longitude Problem

44,306 articles · 255 videos found · page 26 of 1486

Sunday Morning Showdown: Jaeger-LeCoultre Master Control Chronometre Perpetual Calendar Vs. IWC Ingenieur Perpetual Calendar 41 Fratello
Jaeger-LeCoultre Master Control Chronometre Perpetual May 3, 2026

Sunday Morning Showdown: Jaeger-LeCoultre Master Control Chronometre Perpetual Calendar Vs. IWC Ingenieur Perpetual Calendar 41

Another week, another Sunday Morning Showdown. We hope you are enjoying some well-deserved time off and a good weekend breakfast. Lean back in your chair, folks, because we have a proper heavyweight bout scheduled for you! This week, we pit two stainless steel perpetual calendars with integrated bracelets and blue dials against each other. Thomas […] Visit Sunday Morning Showdown: Jaeger-LeCoultre Master Control Chronometre Perpetual Calendar Vs. IWC Ingenieur Perpetual Calendar 41 to read the full article.

New: Panerai Submersible Marina Militare PAM01697 & PAM01698 Carbotech™ Deployant
Panerai Submersible Marina Militare PAM01697 Aug 16, 2025

New: Panerai Submersible Marina Militare PAM01697 & PAM01698 Carbotech™

Panerai’s Submersible Marina Militare PAM01697 and PAM01698 are tactical evolutions of the brand’s dive watch lineage, paying tribute to the Italian Navy’s aviation division (Aviazione Navale). Both models feature green-grained dials, radar-style subdials, and engraved casebacks, but diverge in material execution-one in brushed steel, the other in Panerai’s proprietary Carbotech™.

Introducing: New Panerai Submersible Marina Militare Models PAM01697 And PAM01698 Fratello
Panerai Submersible Marina Militare Models Aug 4, 2025

Introducing: New Panerai Submersible Marina Militare Models PAM01697 And PAM01698

Panerai is no stranger to working with the Italian Navy. The two have joined forces on watches, technical tools, and other products for over a century. As watch enthusiasts, we’ve become accustomed to these collaborative projects featuring the bold Marina Militare typography on the dial. Today, the partnership expands and is dedicated to the Aviazione […] Visit Introducing: New Panerai Submersible Marina Militare Models PAM01697 And PAM01698 to read the full article.

Hands On: F.P. Journe Chronomètre Souverain 20th Anniversary SJX Watches
F.P. Journe Chronomètre Souverain 20th Anniversary Jun 2, 2025

Hands On: F.P. Journe Chronomètre Souverain 20th Anniversary

Although Francois-Paul Journe is best known for his inventions like the Tourbillon Remontoir d’Egalite and Resonance, not to mention the whole suite of Octa models, the Chronomètre Souverain was also arguably one of his brand’s foundational models. This year F.P. Journe is marking two decades of the watch with the Chronomètre Souverain 20th Anniversary, which is essentially the original in new dress – the dial is now dark blue with applied gold numerals. Initial thoughts When the Chronomètre Souverain debuted in 2005 – the same year as the Breguet Tradition that was recently revived – it was novel and exciting; I remember the buzz amongst enthusiasts then. The F.P. Journe brand was barely six years old. The Chronomètre Souverain was then one of the rare few time-only watches from an independent watchmaker, and it had an all-new movement to boot. Today it is less exciting for sure, but the movement remains surprising novel for a basic calibre. As an entry-level watch, the Chronomètre Souverain remains excellent (even if availability is an obstacle). Although the Chronomètre Souverain is the simplest mechanical F.P. Journe watch, the cal. 1304 inside still retains the technical hallmarks of the brand, namely elegant, concise engineering and symmetry. Clever touches include the “invisible” gear train; only the regulator and barrels are visible on the main plate. From its conception, the cal. 1304 was conceived for chronometry. The utility and strength of t...

Hands On: F.P. Journe Chronomètre Furtif SJX Watches
F.P. Journe Chronomètre Furtif After teasing May 1, 2025

Hands On: F.P. Journe Chronomètre Furtif

After teasing collectors with the compact Chronomètre Furtif Bleu in 2023, F.P. Journe has unveiled its successor, the Chronomètre Furtif (CF). The CF offers the same dimensions as its predecessor as well as a similar laser-engraved grand feu enamel dial, but takes the idea of furtif, or “stealthy”, even further with black-on-black livery. While the CF Bleu was a one-off piece in tantalum made for the Only Watch charity auction where it sold for CHF2 million, the new CF is a regular production model crafted almost entirely from scratch-resistant tungsten carbide. Initial thoughts The CF is a watch that hits you over the head with its intense darkness and exceptional weight. It’s not dark in the same way as an H. Moser & Cie. Venturer Vantablack, which effectively absorbs light; rather, the dial is a deep glossy black like the glass of an iPhone screen. This reflectivity makes it difficult to photograph but easy to enjoy. These characteristics are thanks to the flawless black grand feu enamel dial and laser-engraved markings. Because of the way the light plays across the dial, it looks slightly different from almost every angle. It’s a dramatic and interactive dial that contributes significantly to the overall wearing experience. The CF is a true heavyweight, tipping the scales at 250 g. But it feels even heavier on account of its wearable 42 mm footprint and slim 9.55 mm thickness. This size-to-weight ratio gives it an almost overwhelming sense of density. The wa...

First Look - The New Platinum Editions of the Ferdinand Berthoud Chronomètre FB3 SPC Monochrome
Chopard s co-president Karl-Friedrich Scheufele Mar 28, 2025

First Look - The New Platinum Editions of the Ferdinand Berthoud Chronomètre FB3 SPC

In 2015, one of the great names in 18th-century watchmaking was resurrected by Chopard’s co-president Karl-Friedrich Scheufele. Ferdinand Berthoud (1727-1807), the Swiss horologist who emigrated to Paris in 1745 and gained fame for his marine chronometers, was granted a second lease of life. Determined to perpetuate the legacy and chronometric credentials of F. Berthoud’s past […]

Why I Bought It: Rexhep Rexhepi/Akrivia Chronomètre Contemporain Quill & Pad
Rexhep Rexhepi /Akrivia Chronomètre Contemporain There Sep 29, 2024

Why I Bought It: Rexhep Rexhepi/Akrivia Chronomètre Contemporain

There are nice-looking watches, there are crisp-looking watches, and then there are watches that emanate an otherworldly glow. For GaryG the Rexhep Rexhepi/Akrivia Chronomètre Contemporain falls into the third category, so much so that it became a running joke for a friend to pantomime a “smelling salts” motion as a signal for Gary to pull up his sleeve and jolt him back to attention. Here he explains why he bought this new classic watch.

Up Close: F.P. Journe Chronomètre Furtif Bleu “Only Watch 2024” SJX Watches
F.P. Journe Chronomètre Furtif Bleu “Only May 1, 2024

Up Close: F.P. Journe Chronomètre Furtif Bleu “Only Watch 2024”

Possibly the successor to the Chronomètre Bleu, the Chronomètre Furtif Bleu is a unique creation made for Only Watch 2024 taking place on May 10, but also the template for a next generation of lineSport watches. The Furtif Bleu retains the familiar silhouette of the lineSport, but is executed entirely in tantalum – notably the bracelet is tantalum – with a fired enamel dial. Additionally, it is equipped with a new calibre that displays the power reserve and moon phase on the back. Initial thoughts Despite its name and low-key colours, the Furtif Bleu is a very striking watch, largely because of the contrast between the dark grey tantalum and the blue dial with an orange seconds hand. In the hand, it is heavy, as expected for the metal, and also silky in feel due to the finely blasted surfaces of the case and bracelet. Close your eyes and it feels like the current lineSport in platinum, though the blasted finish is finer than that on the existing gold and platinum models. And on the wrist, it is unexpectedly elegant for a sports watch because of its height, which is just 9.5 mm. That’s slightly thicker than the Chronomètre Bleu and noticeably thinner than the lineSport Automatique Reserve. One of the most notable aspects of the watch is the bracelet, which is entirely tantalum. The nature of the alloy makes it particularly difficult to work, explaining the cost and rarity of tantalum watch cases. Tantalum bracelets are even less common. The only other brand I can t...

Jaeger-LeCoultre’s Universe: Marina Bay Sands Boutique Renewed With Catherine Rénier Revolution
Jaeger-LeCoultre s Universe Marina Bay Mar 20, 2024

Jaeger-LeCoultre’s Universe: Marina Bay Sands Boutique Renewed With Catherine Rénier

Jaeger-LeCoultre’s newly refurbished boutique at Marina Bay Sands has opened it’s doors, marking the beginning of a series of reopened stores worldwide as the esteemed 191-year-old brand undergoes a visual rejuvenation. Wei is joined by Catherine Rénier, CEO of Jaeger-LeCoultre, as they delve into the brand’s innovative new interior concept centered around the theme of […]

Only Watch: Akrivia Rexhep Rexhepi Chronomètre Contemporain II SJX Watches
Rexhep Rexhepi Chronomètre Contemporain II What Jul 1, 2021

Only Watch: Akrivia Rexhep Rexhepi Chronomètre Contemporain II

What can one infer from a drawing of a new timepiece? As it turns out, a fair bit. The below sketch is the only bit of information revealed by Akrivia for its contribution to Only Watch 2021, the Rexhep Rexhepi Chronomètre Contemporain II (RRCCII). Despite the paucity of information, much can still be deduced from the single image. Initial impressions The most apparent fact that can be gleaned the sketch is a deadbeat seconds – a seconds hand that jumps discretely once a second. We can infer this from the star and flirt mechanism. The star is mounted on the escape wheel, which is located at six o’clock and completes a revolution once every five seconds. The star blocks the rotation of a flirt, a long lever that presses against the face of the star’s teeth. After each second, the star rotates far enough that the tooth provides enough clearance to release the flirt, allowing the star to rotate until the flirt contacts the next tooth of the star. This sudden release of the flirt is what controls the burst of rotational energy that drives the deadbeat second geartrain. Further inferences can be made from our May 2020 chat with Rexhep, where he hinted the RRCCII will have twin barrels powering separate going trains. In retrospect, that now makes sense in the context of the deadbeat seconds. One barrel drives the going train for timekeeping, including the escape wheel and the star. The other barrel drives a secondary gear train for the deadbeat seconds hand and the flirt...

F.P. Journe Chronomètre à Résonance 20th Anniversary Featuring One Mainspring, One Differential, Two Geartrains, And Two Remontoire d’Egalité Escapements Quill & Pad
F.P. Journe Chronomètre à Résonance 20th Jun 6, 2021

F.P. Journe Chronomètre à Résonance 20th Anniversary Featuring One Mainspring, One Differential, Two Geartrains, And Two Remontoire d’Egalité Escapements

Launched in 2000, the Chronomètre à Résonance was the first wristwatch with a resonance mechanism and it catapulted F.P. Journe into the major leagues. This latest model in celebration of its 20th anniversary is an entirely new piece based on the resonance phenomenon that now incorporates a larger single mainspring (the original had two mainsprings) with a differential driving the two going trains and a pair of remontoire d’égalité escapements.

Experiencing Panerai’s Marina Militare - we wish we were there Time+Tide
Panerai s Marina Militare – Oct 3, 2019

Experiencing Panerai’s Marina Militare - we wish we were there

One of the most interesting watch ‘releases’ this year was Panerai’s series of experiential watches. Basically, the brand released a series of watches with a particular focus - diving, exploration, the armed forces - each with an associated ambassador or partner. One release was the regular version of the watch, and the second was a … ContinuedThe post Experiencing Panerai’s Marina Militare – we wish we were there appeared first on Time+Tide Watches.

Sneak Peek: Akrivia Rexhep Rexhepi Chronomètre Contemporain “Only Watch” SJX Watches
Rexhep Rexhepi Chronomètre Contemporain “Only Watch” Sep 16, 2019

Sneak Peek: Akrivia Rexhep Rexhepi Chronomètre Contemporain “Only Watch”

On a recent trip to Geneva I dropped by the Akrivia workshops in the city’s Old Town and spotted the Rexhep Rexhepi Chronomètre Contemporain “Only Watch”, still in its constituent parts and almost ready for assembly. The dial, however, was finished and gorgeous. It’s a serene grey-blue, made of translucent enamel over a hand-hammered dial plate. Produced with lots of careful effort and a tiny hammer, the hammered finish is usually only applied to Akrivia’s gold dials found on the AK series watches, and is being combined with enamel for the first, and probably only, time. It was a tedious process to get right, which is why the Akrivia is one of the last to be completed amongst the Only Watch line-up. Produced by the same Geneva enamel artisan that does the fired enamel, or grand feu, dials of the standard watch, this dial for the Only Watch example is the second one made, hence “version 2” on its packaging. Rexhep felt the first dial made was not up to scratch – it had too much variation in colour – and had a second one produced. And the first dial was finished only after a handful of trial runs, where it was established that the thinning effect of the hammered surface meant it could not be counter-enamelled on the back as the standard dials are. Aside from the hammered surface, the dial is also unique because the markings are painted in fired enamel, rather than printed. This makes the numbers, lines and text more substantial. And because the ena...

Review: Montblanc Heritage Chronométrie Collection Twincounter Date Deployant
Montblanc Heritage Chronométrie Collection Twincounter Feb 6, 2016

Review: Montblanc Heritage Chronométrie Collection Twincounter Date

Montblanc released the Heritage Chronométrie Collection Twincounter Date at SIHH 2016. This watch spiked our attention because of its utilitarian design and understated beauty. It stands out from the usual time and date wristwatch primarily because of its reinterpreted dial. While not excruciatingly obvious, the unusual subdial positioning of the seconds counter juxtaposed with a larger date subdial is what makes this watch so exciting to us.