sm electrics provide specialized electrical engineering services for naval applications, with a focus on the development, design, manufacturing and distribution of electrical / acoustic alarm systems for marine, offshore ......sm electrics provide specialized electrical engineering services for naval applications, with a focus on the development, design, manufacturing and distribution of electrical / acoustic alarm systems for marine, offshore and industrial plants. Their key shipborne alarm systems include the Bridge Navigational Watch Alarm System (BNWAS) and the Light Signal Alarm System (LSAS).