Talk:R-21 (missile)

Rewrite
I started off just correcting the swapped-round chemical formulae in the fuel mix, and it turned into a total rewrite..... If you combine the Jane's reference to two variants with the NIG comments about the range being extended during the lifetime, it looks like the R-21A is an extended range variant, but I've not got WP:RS that say that - anyone? Also I removed this because I couldn't find written confirmation of it, but might be useful to incorporate if we can get hard enough sources : ''The D-4 launch complex with R-21 missile entered service by a Decision of Ministry Soviet of the USSR of 15 May 1963. Retired in 1989. There were 21 submarines with D-4 complex aboard, 63 missiles on combat duty, 228 launches (193 successful, 19 failed due to hardware bugs, 11 failed due to personnel errors and faults of supplementary systems)'' Le Deluge (talk) 16:14, 14 February 2009 (UTC)

Strange co-ordinates
This article on the R-21 missile is located in Google Earth at N38d05' and E178d57', in the middle of the North Pacific Ocean.. Of itself, this would be of no importance except that these are precisely the co-ordinates of the sunken soviet submarine K-129 which was the subject of the CIA's salvage attempt via the Glomar Explorer vessel. Strange.222.88.24.247 (talk) 02:06, 26 August 2011 (UTC)

The indication that R-21 explosions were the cause of the K-129 sinking is in a letter to the editor in the Washington Times, not in an actual article ... On one hand this may be a reason to discount the validity of this information. On the other hand, like the implicit accuracy of the Lon/Lat info above, it may be from a source that has more insight than current publications. JimInNH (talk) 17:32, 22 October 2012 (UTC) Letter to Editor is from Bruce Rule who is one of the experts in the area of acoustical analysis, so more credible than most. WhyUSS Scorpion was Lost; Bruce Rule JimInNH (talk) 17:23, 23 October 2012 (UTC)

External links modified (January 2018)
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Nato designation
It is called Sark/Serb, but is this correct? The SS-N-4 article calls that missile Sark and the SS-N-6 article calls that missile Serb. 150.227.15.253 (talk) 14:46, 28 December 2018 (UTC)