GrailAtlasAn independent reference for mechanical watches
Fortis Marinemaster
Photo by AbdullahAlfowzan (CC BY-SA 4.0), via Wikimedia Commons · stand-in: Fortis B-42 Marinemaster Automatic (PVD titanium / carbon dial), same Marinemaster diving case family as catalog ref Marinemaster M-42 Automatic (F-2040.11); PVD variant vs steel.

The Fortis Marinemaster | family history

Fortis supplied official timepieces to Soviet-era cosmonauts and served as the official ISS Swiss watch for the ESA. The Marinemaster carries that operational history into a contemporary 42mm dive tool with a Swiss movement and 200m water resistance.

Year introduced: 19541 reference

Fortis's professional diver line, rooted in the brand's history of supplying watches to cosmonauts and military divers.

1954-1990s · Early dive line and space program connection

Fortis's dive watch production dates to the 1950s alongside the broader Swiss dive watch industry that developed through the same era as Blancpain and Rolex. The brand's connection to professional use came through its selection by cosmonaut programs: Fortis watches flew on Soviet and later Russian missions and were formally approved for ESA astronaut use on the International Space Station.

No references from this era in the catalog yet.

2000-present · The modern Marinemaster

The contemporary Marinemaster M-42 maintains the professional brief in a 42mm case with 200m water resistance and the SW200-based Cal. 702.14. The design is direct and functional without the retro pastiche that affects many current dive watch designs. Fortis sells at a lower price point than its space-program history might suggest, which represents genuine value in the Swiss dive segment.

How to read this family

Two questions for Fortis Marinemaster buyers:

Related families: Fortis Flieger · Orient Ray

References in this family

← All Fortis references

The Fortis Marinemaster | family history | Grail Atlas