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Citizen Promaster Automatic NY0040-09EE diving watch. In 1959, Citizen launched the Parawater – Japan's first fully-waterproof wristwatch. It became the forerunner to Citizen's range of dive watches, subsequently (1982) called the Promaster Marine range. Also in 1982, Citizen launched the 1300m Professional Diver's watch – the world's most ...
A diving watch, also commonly referred to as a diver's or dive watch, is a watch designed for underwater diving that features, as a minimum, a water resistance greater than 1.1 MPa (11 atm), the equivalent of 100 m (330 ft). The typical diver's watch will have a water resistance of around 200 to 300 m (660 to 980 ft), though modern technology ...
The standards and features for diving watches are regulated by the ISO 6425 – Divers' watches international standard. [2] This standard was introduced in 1996. ISO 6425 defines such watches as: A watch designed to withstand diving in water at depths of at least 100 m and possessing a system to control the time.
In 2012 Citizen announced the Eco-Drive RING Concept Model. This watch features a ring-shaped solar cell surrounding the watch case sidewall. [13] [14] In 2018 Citizen announced it developed the Caliber 0100 Eco-Drive prototype autonomous high-accuracy quartz watch movement which is claimed to be accurate to ± 1 second per year. [15]
Surface supplied diver rescue tether with soft eye and bolt snap A rescue tether, or rescue rope, is a short lanyard or strap carried by a surface supplied stand-by diver to be used to tether an unresponsive diver to the standby diver during a rescue. It is attached at one end to a D-ring on the stand-by diver's harness, and has a clip at the ...
Early inventors, including Leonardo da Vinci and Giovanni Alfonso Borelli, toyed with the concept of swimfins, taking their inspiration from ducks' feet. [5] Benjamin Franklin made a pair of early swimfins (for hands) when he was a young boy living in Boston, Massachusetts near the Charles River; they were two thin pieces of wood, about the shape of an artist's palette, which allowed him to ...
The cuff was closed using two buckles, allowing the boots to replace the existing service shoes and leggings worn by most soldiers with a more convenient and practical solution. [26] The boots, and the service shoes from which they were made, had a one piece sole and heel, made from molded synthetic or reclaimed rubber.
She started training as a dive instructor and working with sharks in 1995. [5] The same year, she began working for Underwater Explorer's Society (UNEXSO). Later, she became both a PADI Course Director and NSS-CDS Cave Diving Instructor. [6] Zenato's cave diving projects have included remapping the underwater caves in the Lucayan National Park. [7]