[BITList] Fwd: 18 trapped after Indian submarine explodes and sinks in Mumbai | World news | theguardian.com

[FA]

/Sounds like another Kursk type incident
frank
/

/Kursk/ sortied on an exercise to fire dummy torpedoes 
<http://en.wikipedia.org/wiki/Dummy_torpedo> at the /Kirov/-class 
battlecruiser <http://en.wikipedia.org/wiki/Kirov_class_battlecruiser> 
/Pyotr Velikiy/. These practice torpedoes had no explosive warheads, and 
were therefore manufactured and tested to a much lower quality 
standard.^[3] 
<http://en.wikipedia.org/wiki/Russian_submarine_Kursk#cite_note-3> On 12 
August 2000, at 11:28 local time (07:28 UTC 
<http://en.wikipedia.org/wiki/UTC>), there was an explosion while 
preparing to fire.^[4] 
<http://en.wikipedia.org/wiki/Russian_submarine_Kursk#cite_note-4> The 
most credible report to date indicates the explosion was due to the 
failure of one of the /Kursk'/s hydrogen peroxide-fueled Type 65 
torpedoes <http://en.wikipedia.org/wiki/Type_65_torpedo>.^[5] 
<http://en.wikipedia.org/wiki/Russian_submarine_Kursk#cite_note-5> It is 
believed HTP <http://en.wikipedia.org/wiki/High-test_peroxide>, a form 
of highly concentrated hydrogen peroxide 
<http://en.wikipedia.org/wiki/Hydrogen_peroxide> used as propellant for 
the torpedo, seeped through rust <http://en.wikipedia.org/wiki/Rust> in 
the torpedo casing. (A similar explosion caused by an HTP-fuelled 
torpedo was responsible for the loss of HMS /Sidon/ 
<http://en.wikipedia.org/wiki/HMS_Sidon_%28P259%29> in 1955.)^[6] 
<http://en.wikipedia.org/wiki/Russian_submarine_Kursk#cite_note-6>

The explosion produced a blast equal to 100--250 kilograms (220--550 lb) 
of TNT <http://en.wikipedia.org/wiki/Trinitrotoluene> and registered 2.2 
on the Richter scale 
<http://en.wikipedia.org/wiki/Richter_magnitude_scale>. The submarine 
sank in relatively shallow water, bottoming at 108 metres (354 ft) about 
135 kilometres (84 mi) off Severomorsk 
<http://en.wikipedia.org/wiki/Severomorsk>, at 69°40?N 37°35?E 
<http://tools.wmflabs.org/geohack/geohack.php?pagename=Russian_submarine_K-141_Kursk&params=69_40_N_37_35_E_>. 
A second explosion, 135 seconds after the initial event, measured 
between 3.5 and 4.4 on the Richter scale, equivalent to 3-7 tons of 
TNT.^[7] 
<http://en.wikipedia.org/wiki/Russian_submarine_Kursk#cite_note-7> One 
of those explosions blew large pieces of debris back through the submarine.


>
> http://www.theguardian.com/world/2013/aug/14/18-trapped-indian-submarine-explodes-sinks-mumbai
> _______________________________________________
>

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