Not every important Blancpain dive watch was built for military contracts and professional underwater work.
The Bathyscaphe has always been the more wearable side of the Fifty Fathoms story, a civilian-minded diver with slimmer proportions and a quieter personality.
For its 70th anniversary, Blancpain has gone back to one of the line’s most recognisable vintage references, bringing the 1968 Bathyscaphe into the present with a compact steel case, 300-metre water resistance and modern materials.
At a glance
- Blancpain has introduced the Fifty Fathoms Bathyscaphe 70th Anniversary as a limited-series tribute to the model’s history.
- The watch closely follows a 1968 Bathyscaphe design, including a 37.40mm steel case, meteor grey dial and vintage-style dial furniture.
- Modern updates include a unidirectional ceramic bezel insert, screw-down construction, 300-metre water resistance and a sapphire display caseback.
The civilian side of the Fifty Fathoms story
The Fifty Fathoms is widely recognised as one of the formative professional dive watches, but Blancpain’s dive-watch history isn’t limited to its larger, more technical instrument watches.
The Bathyscaphe arrived in 1956 as a more restrained counterpart, built for the growing world of recreational diving rather than exclusively for professional or military use.
Its name carried serious underwater credentials before it ever appeared on a dial.
“Bathyscaphe” refers to the deep-sea submersible conceived by Swiss scientist Auguste Piccard, a pioneering vessel designed to explore ocean depths beyond the reach of conventional diving equipment.
The story gained even greater significance in 1960, when Jacques Piccard and Don Walsh descended to Challenger Deep in the Mariana Trench aboard the Trieste.
Jean-Jacques Fiechter, Blancpain’s CEO at the time and a passionate diver himself, registered the Bathyscaphe name in Switzerland in 1953, only days after the Trieste set a depth-diving milestone in the Tyrrhenian Sea.
The watch would follow three years later, shaped by the same post-war fascination with ocean exploration but aimed at a very different wrist than the professional Fifty Fathoms.
A 1968 Bathyscaphe brought back to size
Rather than recreating the first 1956 model, Blancpain has chosen a 1968 Bathyscaphe as the template for this anniversary edition.
That decision gives the watch a sharper visual identity, with the clean geometry and easy balance collectors often associate with late-1960s skin divers.
The case measures 37.40mm in diameter, matching the vintage model that inspired it.
That’s a meaningful number in a modern dive-watch landscape where many pieces still lean larger, and it gives the Bathyscaphe 70th Anniversary a period-appropriate stance without turning it into a delicate dress diver.
Thickness is 12.30mm, slightly taller than the vintage example, while the 46.50mm lug-to-lug length should give it enough spread on the wrist to avoid feeling too small.
The polished steel case keeps the slender mid-case profile and straight symmetrical lugs that define the 1968 watch’s silhouette.
It’s a shape that feels less like a costume piece and more like a reminder that many of the most practical vintage divers were never oversized to begin with.
Meteor grey dial and modern dive hardware
The dial is where the anniversary watch leans most visibly into its vintage brief.
Blancpain uses a sunray-brushed meteor grey finish, giving the watch a softer and warmer presence than a flat black diving dial.
The mid-century Blancpain signature reinforces the period feel, while baton hands and applied hour markers carry vintage-coloured Super-LumiNova.
The seconds hand has also been recreated with its distinctive arrow tip, and the date aperture at 3 o’clock is framed with a fine white outline.
Around the dial, the bezel keeps the polished steel character of the vintage watch but updates its functionality.
The rotating bezel is now unidirectional, as expected on a modern dive watch, and its insert is ceramic with lacquered numerals rather than the black Hesalite used historically.
The glass box crystal replaces the old plexiglass look with a more contemporary execution while preserving the domed profile that gives the watch its period charm.
The crown and caseback are screwed down, helping the watch reach a modern 300-metre water-resistance rating.
Blancpain has also fitted a sapphire display back, an openly contemporary touch that lets the movement be seen rather than hiding it behind a fully closed steel back.
Details & Specifications
| Brand | Blancpain |
|---|---|
| Model | Fifty Fathoms Bathyscaphe 70th Anniversary |
| Inspiration | 1968 Blancpain Bathyscaphe |
| Case size | 37.40mm |
| Thickness | 12.30mm |
| Lug-to-lug | 46.50mm |
| Case material | Polished steel |
| Dial | Meteor grey sunray-brushed dial |
| Bezel | Unidirectional polished steel bezel with ceramic insert and lacquered numerals |
| Crystal | Glass box crystal |
| Caseback | Screwed sapphire display caseback |
| Water resistance | 300 metres |
| Dial details | Vintage-style Blancpain logo, applied markers, baton hands and arrow-tipped seconds hand |
| Lume | Vintage-coloured Super-LumiNova |
| Date | 3 o’clock with thin white frame |
| Availability | Limited series |
The appeal here is fairly precise, and that’s a good thing.
This isn’t a maximalist dive watch chasing modern scale, nor is it a fragile nostalgia piece that asks the wearer to accept old limitations.
For collectors who like vintage proportions but still want proper water resistance and robust contemporary materials, the Fifty Fathoms Bathyscaphe 70th Anniversary looks like one of Blancpain’s more focused heritage exercises.
