A couple interesting submarine launched UAVs, one by Raytheon and another, VOLANS, built by a German company, are featured in this Register article. The Submarine Over the Horizon Organic Capabilities, or SOTHOC, built by Raytheon, is launched out of the waste disposal lock of a submarine. SOTHOC then decents to a preset depth where it rises to the surface and launches a unmanned flying vehicle to gather data. The UAV can relay the data back to the sub via antenna, or if the sub whishes to remain anonymous the data can be relayed via satellite back to the US. This system allows a submarine to lauch an UAV while remaining submerged, in contrast to the VOLANS, which launches via a mast attached to the robot. The VOLANS functions as a mobile periscope for the sub.