Design Concept
The Mk II Sea Fighter, first launched in 2007, was the third dive watch that Mk II produced. We were captivated by the reference design's embodiment of the modernist design ideal, form follows function. Launched in 1976, the reference design Blancpain Fifty Fathoms RPGA3 Bw (NSN 6645-12-171-4162, aka 3H BUND) was made for the Bundeswehr general and technical dive services. When taken into context of the development of dive watches the 3H BUND, as it is referred to in collector's circles, seems to be a logical conclusion to the ultimate CCR (closed circuit rebreather) dive watch. Our intent with the Sea Fighter was to continue the modernist evolution of the reference design to arrive at a watch with a more utilitarian form factor, 200 meters water resistance versus the 3H BUND's 100 meters, and in grade 2 titanium the Sea Fighter Ti is 25% lighter than the vintage watch. Finally the design was adapted to modern combat diving by moving the crown from 4 o'clock to 8 o'clock.
The reference 3H BUND was housed in a polished bespoke Van Büren stainless steel case with fixed bars. The case had all the hallmarks of a Van Büren case but was much thicker and stouter in construction than their standard case. The Mk II version features grade 2 titanium in a thinner brushed case with ISO rated Seiko-style fat spring bars. We abandoned the chamfers, which we felt were more ornamental than functional, lowered the angle of the drop of the lugs to give the watch a more modern silhouette, but kept the asymmetrical case shape since it elegantly provides protection to the crown.
The Sea Fighter Ti also includes design and manufacturing process improvements when compared to our 2007 edition. Most notably we moved the crown from 4 o'clock to 8 o'clock which makes the watch easier to pair with modern digital dive computers. The final change that we made to the new Sea Fighter Ti is to test the water resistance according to the ISO 6425 standard which specifies among other requirements that each watch is tested in water to 125% of its rated depth.
For the dial we retained the white date wheel, dial markers and the layout of the reference design and simplified the design from there. We eliminated the white border around the date window while keeping the bevel around the window opening which provides a refinement that compliments the quality of the dial's print and lume application. The Sea Fighter's dial uses non-radioactive Arclite lume which has a white appearance and emulates the green glow of tritium while also being non-toxic and endlessly rechargeable. The Mk II logo and text is printed in gray as a nod to the gray luster of the titanium case.
The hour and minute hands largely stayed true to the reference design with adjustments to scale and color. One of the details that makes the vintage design so interesting and iconic are the scale of the hands which seem to strain the dial's dimensions, verging on being completely unbalanced. We moderated this slightly while keeping the visual emphasis on the minute hand. The other iconic detail about the reference design is the extra large luminous meatball on the sweep seconds hand. For our version we changed the sweep's finish from a polished silver to a matte orange and white color scheme, kept the extra large meatball, and tapered the tip of the sweep to project a better sense of modernity, control and precision.
We're excited to be able to offer a single triangle sapphire inlay option for this latest generation Sea Fighter. This was a goal left unfilled in the first generation watch. The single-triangle acrylic inlay is the most striking thing about the 3H BUND design and unfortunately vintage examples with an intact triangle at 12 o'clock are exceedingly rare. Back in 2007 we made our own attempts to make acrylic inlays here in the US for the first generation Sea Fighter. In theory it isn't difficult but we lacked the expertise required. So the end result was only a handful of acrylic inlays that ever made it to customers. In 2007 luminous sapphire inlays were state-of-the-art technology, having just been launched in 2003. Twenty some odd years later the technology is still challenging but nearing maturity. In addition to the sapphire inlay there is a standard aluminum dive bezel as well as a countdown bezel available. These three designs summarize the development of the combat dive bezel with the time-elapse bezel exemplifying the beginning, the CCR inlay the second generation, and the countdown bezel the modern iteration.