E M I L was a secret tank development project in Sweden during the early 1950s, better known under its cover-name KRV (short for KRANVAGN, meaning mobile crane). The intention was to replace the disparate tank-fleet with a heavy tank, that could be upgraded continuously. The project was discontinued during development and only two chassis were built, and those chassis were later rebuilt and served as testing platforms for the Artillerikanonvagn 151 and Stridsvagn 103 projects.