Submarine Laundry Aired Publicly - Mildew Evident

The incident will not help the troubled reputation of the Collins-class fleet, which has been plagued by technical problems...

August 23, 2011 about 20km off the northwest coast of Rottnest Island (Not Revealed at the time)

According to several crew members' versions, the Farncomb slowed to a virtual halt, tilted nose up and began to slide backwards towards the ocean floor. The tilt was so steep that sailors eating in the mess room had to grab their dinners as they slid off the table. Those in the sleeping quarters found themselves "on top of each other". ...

Navy claims the EPU "would be sufficient to maintain control of the submarine in such situations". Submarine experts dispute this and say that, if this was so, why did Commander Miles not use this option rather than order the more drastic blowing of all ballast tanks.

"The EPU is only designed for surface propulsion and there is no way that it could have controlled a 3000-tonne submarine heading backwards towards the seabed," said one expert, who asked not to be named. source article - The Australian, September 10, 2011

Submarines are always silent and strange.