In 2018, we performed work on the transport and mine ship ORP Poznań. The range of work included: - replacement and modernization of the alarm signaling system, service and watch signaling, mine signaling, "man in the cold store" signaling, control of cooling of shaft line bearings, signaling projectors. The modernizations were carried out in accordance with the guidelines provided by representatives of the Polish Armed Forces and the client. For the above-mentioned systems, apart from signal projectors, documentation has been prepared. - reconstruction of the control system for entry ramps and coupling of ships. - construction of a new watertight door control system and a flooding and drying system for ammunition stores and special chambers.