SITMEX is the trilateral exercise of Indian Navy, Singapore Navy and __________.

A maiden trilateral exercise SITMEX, involving Republic of Singapore Navy (RSN), Royal Thailand Navy (RTN) and Indian Navy (IN) started at Port Blair. The exercise aims to bolster the maritime inter-relationships among the Singapore Thailand and India, and contribute significantly to enhance the overall maritime security in the region. This would also strengthen the mutual confidence amongst three navies in terms of interoperability and development of a common understanding of procedures.