integrated undersea surveillance system (IUSS)

modular integrated display and sight helmet (Modular Integrated Display-And-Sight Helmet)

integrated underwater surveillance system

autonomous undersea system (AUS)

mission-reconfigurable unmanned undersea vehicle system

unmanned undersea system (UUS)

NATO Undersea Research Centre

in the undersea domain

undersea cruiser

advanced development unmanned undersea vehicle

attack unmanned undersea vehicle

autonomous undersea vehicle (AUV)

mission-reconfigurable unmanned undersea vehicle

recce unmanned undersea vehicle

uncrewed undersea vehicle

unmanned undersea vehicle (UUV)

eXtra Large Uncrewed Undersea Vehicle (XLUUV)

Large Uncrewed Undersea Vehicle (LUUV)

surveillance, high- and low-altitude surveillance

surveillance, under surveillance

Defense Integrated Military Human Resource System (DIMHRS)

integrated air defense system

integrated engagement-sighting system

Integrated Modular Unmanned Ground System (iMUGS)

NATO Integrated Air defense System

NATO Integrated Communications System

extended range modified integrated system

integrated tactical command and control system

Integrated Air Command and Control System

integrated helmet-mounted display system

aircraft integrated data system (AIDS)

aircraft integrated data system

integrated flight and navigation system