Sinking of Decommissioned Ships
After a ship is decommissioned from service it is often used
as a target to test new weapons or training personnel in the operating
of the same weapon. Sometime a ship is sunk to make artificial reef and
diving site. A well documented weapon test operation, pictures of which
were released by the Navy in the public domain, is the sinking of the HMAS Torrens on 14 June 1999. HMAS Torrens
was a destroyer escort of the Royal Australian Navy from 1971 till her
decommissioning in 1998. She was sunk by a torpedo from a submarine
during the latter's combat system trials.
The
explosive power of a torpedo is clearly demonstrated in these photos.
The warhead detonates below the keel of the target ship, the resulting
pressure wave of the explosion lifts the ship and breaks its keel in the
process. As the ship "settles" it is then seemingly hit by a second
detonation as the explosion itself rips through the area of the blast.
This combined effect often breaks smaller targets in half and can
severely disable larger vessels.
Images
and footage of the ship sinking have been used and adapted for various
purposes. Digitally edited film of the torpedo hitting Torrens was used
in the 2001 film Pearl Harbor as part of a black-and-white
'newsreel' montage. Then in 2006 a Hezbollah-operated website released
one of these photos claiming to be that of an Israeli warship sunk by a
Hezbollah missile.
A more recent sinking operation has been
captured in the following images. The ship and the location could not
identified at this moment, so I’m unsure whether this was sunk as a test
for some weapon or to create a wreck diving site or for some other
purposes.

