The Submariner “Specials”
RED SUBMARINER
There is also a rather unusual version of the SUBMARINER 1680, sold mostly on the North American market, with the SUBMARINER inscription on the dial painted in RED (1969 to 1975). This version was manufactured only in stainless steel.
SUBMARINER COMEX
During the latter half of the 1960s, in collaboration with the French company COMEX, specialists in underwater operations, ROLEX developed a model to meet the most stringent technical and professional demands.
Divers not only needed solutions for water resistance at extreme depth. They also faced the danger of explosive decompression caused by helium penetrating the interior of the watch while they breathed the mixture of oxygen and helium within their hyperbaric chamber.
To maintain a pressure identical to that underwater, the mixture in the hyperbaric chambers remained the same during the different phases of work and rest periods. This system was designed to eliminate the need to depressurize the chamber after each phase of work.
Before returning to free air, and depending on the depth attained, a period of depressurization was necessary to equalize the internal and external tension of the human organism.
Though the process of depressurization is slow, the gas that accumulated inside the watch, having no means to escape fast enough, exploded the crystal, causing serious injury to those inside the chamber.
The problem was solved by placing a valve inside the case at the 9 o’clock position that would enable the helium to escape bit by bit as the pressure inside was taken down to atmospheric pressure.
The valve began to function when the difference between the exterior and interior of the watch exceeded 2.5 kg. per sq. cm.
The first helium valves were patented at the end of 1967, and set into a trial series of 5513 delivered to COMEX between 1969 and 1971.
During delivery, these watches, as with all the watches supplied by the company, were personalized with the COMEX inscription printed on the dial and engraved inside the case-back, but without the retailer’s delivery serial number. This is also the case for a large number of normal 5513s supplied in 1970.
The diameter of the valve of these 5513s was small, somewhat crude in appearance and not made of stainless material. The chrome wore out and the outside of the valve began to blacken with oxidation.
In 1972, once the field trial period was over, ROLEX began to produce special 5513s with helium valves especially for COMEX, with their own reference 5514.
Several dozen were delivered in small lots between 1972 and 1977.
This time, the valves were smaller, but made in stainless steel, usually with the delivery serial number engraved on the case-back.
The standard caliber 1520 was used for these two series, until 1972, as for all the technical models produced from that year on.
To round off the subject of ROLEX, it’s worth remembering that between the latter half of the 60s and 1997, apart from these two prototypes, ROLEX supplied COMEX with other models, with acrylic crystals (5513 standard and 1665) and sapphire crystals (from the 1980s onwards).
The last type of acrylic crystal SUBMARINER to mention is the military model for the British Royal Navy.
ROYAL NAVY SUBMARINER
In the mid-1960s, ROLEX began manufacturing special SUBMARINER 5513s for the frogmen of the ROYAL NAVY, with the following specific characteristics:
• The dial is marked with an encircled “T” for tritium.
• They have highly luminous sword-shaped hands, for visibility in extremely bad light.
• Bracelet bars were soldered to the case, and the bracelet itself was the famous Nato-strap, made from special highly water resistant fabric. This combination of materials and structure made it impossible for the watch to fall off and be lost under water.
The year, serial delivery number, model’s military identity and the Broad arrow, a stylized arrow to show that the watch was the property of the British Royal Navy, were all engraved, once delivered in Britain, on the case back.
The military engravings were only done once the watch in question had been assigned to a particular serviceman.
A lengthy period could pass between the delivery of the watch to the ROYAL NAVY and its entry into service, as the choice of watch to be issued did not follow the order of initial delivery.
During the first years, the standard bezel of the civilian SUBMARINER was used. Following new military specifications at the start of the 1970s, it was replaced by one with a continuous minute counter, with all minutes from 1 to 60 marked.
In most cases, once their period of service was complete, whether or not they had been issued or been in service, the Navy sold the watches as surplus. They were often reconverted to civilian standards by replacing the dial, hands and bezel by those supplied from standard spare parts.
Another particularity to mention concerning the 5513 is the model that ROLEX supplied to the ROYAL MARINES, with a double reference number: 5513 on the case and 5517 on the bracelet attachment at 8 o’clock.
SUBMARINER TRANSITION
Between 1986 and 1989, ROLEX brought out a transition model of the SUBMARINER with date indicator and the first sapphire crystal, the model 16800.
Other improvements from the new SEA-DWELLER were also incorporated, including caliber 3035, safety bezel and revised indices. The maximum depth increased to 1,000 ft. and a version in gold and stainless steel, with the reference 16803, was launched