Gavia Defence is a modular, man-portable autonomous underwater vehicle (AUV) produced by Teledyne Gavia Iceland. The AUV's batteries and payloads are field swappable. Payloads include side scan sonar and digital cameras. Naval applications include mine counter measures (MCM), anti-submarine warfare (ASW), environmental assessment, surveillance, Search & recovery, and port security.
In 2013-14, the Russian Navy acquired a total of eight Gavia AUVs for 744.244 million rubles ($13.2 M USD). In January 2015, a Gavia AUV helped the Indonesian Coast Guard search for the downed AirAsia flight QZ8501 in the Java Sea.