The new Seiko Prospex Save the Ocean Limited Edition 1965 Modern Reinterpretation, or better known as the SLA065, is an addition to a long line of limited edition Prospex watches that have served as a platform for the brand to support various marine conservation programs. It’s a watch that houses multiple intersections of Seiko design and various historical instruments embodying the spirit of exploration during a point in time when what was beyond the horizon, and below the ocean’s surface, was virtually unknown. While resting on the shoulders of the 62MAS, Seiko continues the lineage of the archetypal diver through the SLA065, while simultaneously paying tribute to a time keeping device that predates the wrist watch.
The overlapping circle design on the dial is inspired by a 6th century scientific instrument known as an astrolabe. Used for tracking time and astronomical observation, the astrolabe in its infancy was used to track the sun and other prominent stars in relation to the horizon (latitude) and the meridian (longitude). Naturally this information would prove useful for those navigating the seas, and so the astrolabe was modified to be sturdier and more aerodynamic by cutting some of the disc components away. Using a set of pin holes, a pivoting ruler, and a scale on the outer portion of the instrument, a seafarer would be able to determine their latitude, the height of the sun, as well as the time. As one prominent adventurer once put it, the distance you’ve traveled on your exploration is irrelevant, if you are unaware of the time it took you to get there.