Some Notes on Risk and Safety Evaluation of RO-RO Passenger Ships Exploitation

Volume 5, Issue 5, October 2020     |     PP. 100-114      |     PDF (2223 K)    |     Pub. Date: November 25, 2020
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Marek Szymonski, Naval Academy of Gdynia, Ships Exploitation Department, Gdynia, Poland

Merchant ships vary considerably in size, type, general design and function. Some specific type of ships (Ro-Ro passenger/vehicle/train ferries) requires much more stringent regulations for construction, maintenance and safety than those for other. By law, a vessel in all loading conditions must satisfy damage stability requirements led in “The international convention for the Safety of Life at Sea, 1974” – ( SOLAS). The damage stability criteria has been modified in 1990, with additional, simplified stability information for the master.
The paper concerns a selected aspects of damage stability requirements for Ro-Ro/ passenger ships. This type of ships is characterized by flat vehicle decks which are practically open, un-subdivided, and additional passenger accommodation space. The ramp is fitted astern and in some cases in fore or side of the ship, giving access to cars, trucks and trailers, or specific trains which remain on board in their laden state. The dramatic loss of the Ro-Ro passenger ships: M/F “Herald of Free Enterprise” in 1987, and M/F “Estonia” in 1994, respectively, has resulted in international regulation requiring, amongst other things, strengthening the damage stability requirements for this type of ships. The more stringent damage stability criteria has been adopted on a regional basis by northern European countries (STOCKHOLM Agreement, 1996).

stability regulations, Ro-Ro/passenger ships, damage stability calculations

Cite this paper
Marek Szymonski, Some Notes on Risk and Safety Evaluation of RO-RO Passenger Ships Exploitation , SCIREA Journal of Electrical Engineering. Volume 5, Issue 5, October 2020 | PP. 100-114.


[ 1 ] IMO Circular letter No.1930 , “Regional agreement concerning specific stability requirements for Ro-Ro passenger ships”, London 1996, upublished.
[ 2 ] IMO Circular letter No. 1891, “Agreement concerning specific stability requirements for ro-ro passenger ships udertaking regular scheduled International voyages between or to or from designated ports in North West Europe and the Baltic Sea”, London 1996, unpublished.
[ 3 ] Vassalos Dracos, Papenicolau Apostolos, ” Stockholm Agreement - Past, Present, Future “, Society of Naval Architects. 2002, Vol. 39, No 3, pp. 137-158.
[ 4 ] D.J. Eyres, 2005, ELSEVIER Butterworth- Heinemann, Ship Construction, Amsterdam, 354 p.
[ 5 ] George Simopoulos Dimitris, Konovessis Email, Dracos Vassalos, “Sensitivity analysis of the probabilistic damage stability regulations for Ro-Pax vessels”, Journal of Marine Science and Technology, 2008, Volume 13, Issue 2, pp. 164–177 .
[ 6 ] Klaas van Dokkum, Hans ten Katen, Tees Koomen, Jakob Pinkster, 2008, Ship Stability, DOKMAR Nederlands, 176 p.
[ 7 ] M.Szymonski, Analysis and Eveluation of Manoeuvrability Characteristics of Polish Ferries M/F ‘Polonia’ and M/F ’Gryf’ ,TRANSNAV, The ournal on Marine Navigation and Safety of Sea Transportation, 2013, Vol.7, No 4, Gdynia, December 2013.
[ 8 ] Documentation of ro-ro passenger ship M/F ‘Kaptan Burhanettin Isim’, unpublished.
[ 9 ] Documentation of Ro-Ro passenger ship M/F ‘Gryf’, unpublished.