Turning the Tide
Searching for New Horizons
Building on the experience gained in the development and production of the successful ProDiver and Aquis series, the leading Swiss mechanical watch manufacturer Oris identified the need for a mechanical divers watch which meets the following objectives:
- 1. Build on the successful and well-proven ProDiver collection featuring an automatic mechanical movement, water-resistant 1,000m and a unidirectional revolving top ring with 60 minutes timer scale
- 2. Incorporates an accurate and reliable tidal range and lunar cycle indication, without adding additional complexity or excessive weight and volume
- 3. Maintains an excellent value for money ratio
A Natural Phenomenon
Daily tides are created by the moon’s gravitational force pulling the water in the Earth’s oceans towards the moon, forming a tidal bulge. As the Earth rotates on its own axis every 24 hours, each tidal bulge is carried from beneath the moon’s direct gravitational pull, causing tidal currents as water moves along the ocean floor.
This interaction of forces is subject to constant changes, with the moon rotating around the Earth in 29.53 days, the Earth’s rotation and the constellation of sun, moon and earth.
Forces To Be Reckoned With
The Moon exhibits different phases as the relative position of the Sun, Earth and Moon changes, appearing as a full moon when the Sun and Moon are on opposite sides of the Earth and as a new moon (dark moon) when they are on the same side. When the Sun and Moon are aligned on the same side of the Earth, the Moon is ‘new and appears invisible from Earth as it is not illuminated by the Sun.
The time period between two new moons (a Lunar month) is 29.53 days – or to be even more precise 29 days, 12 hours, 44 minutes.
Knowledge of the lunar cycle and the resulting tide range and tidal currents as a consequence is important for sailing, fishing, scuba diving and other water athletes, as well as to commercial divers.
The Oris Invention ®
The first to have captured the lunar cycle and its gravitational forces in a mechanical watch, Oris engineers have designed a timepiece which shows the lunar cycle and its relative impact on the oceans’ tidal range.
The phases of full moon and new moon occur when the Earth, Moon, and Sun lie (approximately) in a straight line. When in this alignment, the gravitational forces causing tides at their most powerful. This stage of the lunar cycle sees much stronger tide ranges and tidal currents (spring tides) than with a waxing or waning moon.
The figure of eight shaped orange line with the illustrations on the left hand side highlights the strength variance of gravitational forces throughout the lunar cycle.
Illustration A side shows the example of a new moon – the point at which the tide range and the resulting tidal currents are at their maximum.
Illustration B shows the example of a waning half-moon – the point at which the tide range and the resulting tidal currents are at their minimum.
The unique dial of the Oris ProDiver Pointer Moon displays the lunar calendar on its outer edge as well as visualizing the moon’s phase.
The light grey circles indicate the level of gravitational force, in maximum (max), average (avg) and minimum (min). The orange “figure of eight” reveals the gravitational force present at the respective moon’s phases.
By setting the orange hand on the current lunar date, here at day 20, the respective tidal range is indicated as a minimum to average level on the day in question. This allows the commercial diver to know the force of the tidal current on any particular day. However as specific tidal range varies from one location to another and is different on the northern and the southern hemisphere, Oris has developed two different dials.
The new Oris ProDiver Pointer Moon is a compact and high quality timing instrument, which indicates the tidal range and lunar cycle at a glance.
The satined, scratch-resistant ceramic inlay of the unidirectional revolving top ring has an engraved 60 minute scale, with individual white enamel minute markers.
The white Super-LumiNova® applied to the hands and indices, not only gives excellent visibility underwater but also offers one of the longest lasting luminosities of all Super-LumiNova® colours.
Protected Screw-In Security Crown
The durable stainless steel screw-in security crown is protected against knocks by a stainless steel DLC-coated safety barrier.
The automatic, self-regulating helium valve allows for the release of helium particles and prevents decompression damage to the watch following the dive.
The Case Back with a Conversion Scale
The titanium case back carries a special set of engravings with a metre to feet conversion scale which goes up to 1,000m/3,281 ft.
This conversion scale allows for rapid calculation by divers working in countries where both metric and imperial measurements are used.
Rotation Safety System – Another Oris Innovation
The stainless steel screw-in security crown is protected against knocks by a stainless steel DLC-coated safety barrier, build along the distinctive Oris Aquis horns.
When in the start position, the specialist rubber top ring can be turned whilst the black ceramic timer scale remains locked.
The rubber top ring can be lifted to release the timer scale.
When the timer scale is released, the top ring can also be turned anticlockwise to move the ceramic timer scale and set the diver timer.
Pushing the top ring down until the ‘click’ locks the bezel into the start position and secures the timer function.
The Folding Clasp for Easy Size Adjustment
The folding clasp on the rubber strap allows an easy and quick adjustment. When putting the wetsuit on, the rubber strap can be easily widened.
The Safety Anchor – Another Oris Innovation
The rubber strap has been designed with an “anchor”, an additional safety feature to prevent the watch from falling off the wrist.
The ‘Sliding Sledge’ of the Clasp
The ‘sliding sledge’ of the clasp for the rubber strap can be rapidly adjusted without opening the clasp to guarantee a perfect fit when underwater pressure makes the wetsuit less voluminous.
The Oris ProDiver Pointer Moon Set
The Oris watch comes in a special waterproof case as a set comprising a replacement titanium bracelet, a set of tools to change the strap and a certificate containing full details of this latest invention in the world of professional divers’ watches.
Ref. No. 761 7682 7154 Set, Ø 49.00mm, Northern Hemisphere
Ref. No. 761 7682 7134 Set, Ø 49.00mm, Southern Hemisphere
- Automatic mechanical movement Oris Cal. 761, based on Sellita SW220 with pointer moon function and date display at 5 o’clock
- Centralised second, minute, hour and pointer moon displays
- Multi-piece titanium case, water resistant to 1,000 metres
- Screwed case back with metres-feet conversion scale
- Sapphire crystal domed on both sides with inner anti-reflective coating
- Diver’s unidirectional revolving top ring with minute scale on black ceramic inlay
- Dial with applied indices and hands, both with Super-LumiNova® inlay
- Protected screw-in crown
- Rubber strap with folding buckle and easy adjustment extension
- Set includes waterproof case and a titanium bracelet with tools to exchange
Swiss Retail Price CHF 3,200.00/Set