Design of a submarine main ballast tank flood and vent openings mechanisms

  • Emilian Octavian Ivanov “Dunarea de Jos” University of Galati
  • Costel Ungureanu “Dunarea de Jos” University of Galati
Keywords: submarine, submerged vehicle, ballast system, main ballast tank, flood port cover, vent opening cover, rotary vane actuator.


Besides the piping systems used for blowing the main ballast tanks of a submarine by feeding compressed air, a great importance must be given to the flood and vent openings and the mechanisms that operate the covers. From an engineering standpoint, the flood openings must be as small as possible to minimize the noise generated by the water flow.Their number and cumulated area must be determied as to avoid over pressure when feeding compressed air into the ballast tanks that may lead to structural damage. The requirements for designing of such systems are covered by the Class and Administration rules and regulations.


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[4]. Wilgenhof, J. D., Conessa Giménez, J. J., García Peláez, J., “Performance of the main ballast tank blowing system”, Paper for UDT Europe 2011 – Undersea Defence Technology Conference, 2011;
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How to Cite
Ivanov E, Ungureanu C. Design of a submarine main ballast tank flood and vent openings mechanisms. Annals of ”Dunarea de Jos” University of Galati. Fascicle XI Shipbuilding [Internet]. 4Dec.2023 [cited 24Jul.2024];46:155-60. Available from:

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