Reference:sea-dweller: Difference between revisions

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The Sea-Dweller is Rolex's saturation-diving line, distinguished from the Submariner by its helium escape valve. Development examples appear in 1967, and civilian sales of the 1665 followed in the early 1970s. The historical references covered here are 1665, 16660, 16600, and 116600.

The operational distinction sits at 9 o'clock on the case. A one-way helium release valve, Swiss patent CH492246 (filed November 1967, granted June 1970), lets helium dissolved in the watch during long mixed-gas chamber dives escape during decompression without popping the crystal off the case. The Submariner ~~has no valve. Saturation divers need one~~.

The operational distinction sits at 9 o'clock on the case. A one-way helium release valve, Swiss patent CH492246 (filed November 1967, granted June 1970), lets helium dissolved in the watch during long mixed-gas chamber dives escape during decompression without popping the crystal off the case. The valve is the feature that separates the Sea-Dweller from the standard Submariner for saturation work.

This hub stops at the 2014–2017 116600. Current references 126600 and 126603 are outside this historical scope.

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== Related families ==

* [[Reference:submariner|Submariner]] — the parent line. ~~Same case, same bezel template, with~~ the valve and the depth rating ~~as the functional split~~.

* [[Reference:submariner|Submariner]] — the parent line. The Sea-Dweller adds the helium valve and the higher depth rating.

* [[Reference:milgauss|Milgauss]] — ~~the other specialist~~ tool~~. Different threat (magnetism, not pressure)~~, ~~same purpose: a Rolex built for one specific working environment~~.

* [[Reference:milgauss|Milgauss]] — another Rolex tool watch, designed around magnetic resistance rather than saturation diving.

* [[Reference:gmt-master|GMT-Master]] — ~~the~~ parallel sports line~~. Same~~ Cerachrom ~~transition arrives on both lines~~ in the late 2000s.

* [[Reference:gmt-master|GMT-Master]] — a parallel sports line that adopted Cerachrom bezels in the same broad late-2000s period.

== Shared references ==

@@ Line 20: / Line 20: @@
 The Sea-Dweller is Rolex's saturation-diving line, distinguished from the Submariner by its helium escape valve. Development examples appear in 1967, and civilian sales of the 1665 followed in the early 1970s. The historical references covered here are 1665, 16660, 16600, and 116600.
-The operational distinction sits at 9 o'clock on the case. A one-way helium release valve, Swiss patent CH492246 (filed November 1967, granted June 1970), lets helium dissolved in the watch during long mixed-gas chamber dives escape during decompression without popping the crystal off the case. The Submariner has no valve. Saturation divers need one.
+The operational distinction sits at 9 o'clock on the case. A one-way helium release valve, Swiss patent CH492246 (filed November 1967, granted June 1970), lets helium dissolved in the watch during long mixed-gas chamber dives escape during decompression without popping the crystal off the case. The valve is the feature that separates the Sea-Dweller from the standard Submariner for saturation work.
 This hub stops at the 2014–2017 116600. Current references 126600 and 126603 are outside this historical scope.
@@ Line 107: / Line 107: @@
 == Related families ==
-* [[Reference:submariner|Submariner]] — the parent line. Same case, same bezel template, with the valve and the depth rating as the functional split.
+* [[Reference:submariner|Submariner]] — the parent line. The Sea-Dweller adds the helium valve and the higher depth rating.
-* [[Reference:milgauss|Milgauss]] — the other specialist tool. Different threat (magnetism, not pressure), same purpose: a Rolex built for one specific working environment.
+* [[Reference:milgauss|Milgauss]] — another Rolex tool watch, designed around magnetic resistance rather than saturation diving.
-* [[Reference:gmt-master|GMT-Master]] — the parallel sports line. Same Cerachrom transition arrives on both lines in the late 2000s.
+* [[Reference:gmt-master|GMT-Master]] — a parallel sports line that adopted Cerachrom bezels in the same broad late-2000s period.
 == Shared references ==