Check this out (Score 1)

Interesting, but check this out http://www.cctechnol.com/

Since 2000, we've had an autonomous sub that can dive to 3000 meter for 50 hours. Currently, we are out testing our new 4500 meter version in the Gulf of Mexico. We run Solaris on a Sparc based cPCI chassis in our Payload sphere used to naviagate, collect data and control various sensors. In the Control sphere, implemented by our partner Kongsberg Maritime of Norway, we have a Control processor and Nav processor based on x86 technology. Communication between the Payload, Control and Nav processors is via corba.

To date, with our two 3000 meter versions, we've done over 80,000 km of surveying world wide.