The Sea Stalker UUV is a spinoff of the original Sea Horse UUV program and is a product of the Pennsylvania State University Applied Research Laboratory (PSU ARL). The Sea Stalker is a 38-inch diameter platform with a speed of nearly 5 knots.
The Sea Stalker UUV has proven developmental testing while being launched and recovered from the USS Bainbridge (DDG-96) and is projected to be submarine deployable from a dry deck shelter (DDS) on a SSGN (Kenny & Belz, 2008). The Sea Stalker is designed for ISR and command and control by using a set of retractable antennas to combine stealth and functionality. A downfall of the Sea Stalker program is power; due to submarine restrictions, it cannot use lithium battery technology and is currently supplied by alkaline (D-Cell) battery technology. The future of the Sea Stalker program is not known, but it has shown some technological capabilities that are possible from a DDS deployable UUV.