Damage Stability Regulations for RO-PAXes

Since before the entry into force of SOLAS2009, on 1st January 2009, amendments were found to be necessary. Hence, over the past decade or so the various elements of Damage Stability Regulations and Explanatory Notes relating to Passenger ships and specifically the safety and survivability of RO-PAX ships have been enhanced. These significant developments, relating to the Required Subdivision Index, R, and the Probability of Survival Factor, s, which contributes to the Attained Subdivision Index, A, have been incorporated into SOLAS2020, which entered into force on 1st January 2020. However, at present RO-PAX ships operating in European Union waters must still also comply with the existing Stockholm Agreement.

In the May 2020 issue of The Naval Architect magazine, published by the Royal Institution of Naval Architects (RINA), Safinah Group’s Keith Hutchinson and Andrew Scott of the Maritime and Coastguard Agency discuss the new SOLAS2020 Damage Stability Regulations for RO-PAX ships, together with possible future developments. 

This concludes a series of seven papers presented at Royal Institution of Naval Architects conferences over the past decade, and subsequently summarised in three articles published in the The Naval Architect magazine over the past three years, on the subject of Passenger Ship and RO-PAX Damage Stability. 

The list of papers and articles discussing the evolution of the SOLAS Damage Stability Regulations from 2009 to 2020 is detailed below.

  • HUTCHINSON, K.W., SCOTT, A.L., WRIGHT, P.N.H., WOODWARD, M.D., and DOWNES, J. ‘Consideration of Damage to Ships from Conceptual Design to Operation: The Implications of Recent and Potential Future Regulations regarding Application, Impact and Education’, International Conference on The Damaged Ship, The Royal Institution of Naval Architects, London, United Kingdom, 26th and 27th January 2011, Pages 15 to 30. ISBN: 978-1-905040-79-7
  • HUTCHINSON, K.W. and SCOTT, A.L. ‘The Development and Impact of Current and Possible Future National and International Damage Stability Regulations’, International Conference on The Damaged Ship II, The Royal Institution of Naval Architects, London, United Kingdom, 30th and 31st January 2013, Pages 21 to 35. ISBN: 978-1-909024-11-3
  • HUTCHINSON, K.W. and SCOTT, A.L. ‘Current and Possible Future Intact and Damage Stability Regulations and Verification Tools for Passenger Ships’, International Conference on The Damaged Ship III, The Royal Institution of Naval Architects, London, United Kingdom, 25th and 26th March 2015, Pages 15 to 25. ISBN: 978-1-909024-38-0
  • HUTCHINSON, K.W. and SCOTT, A.L. ‘Passenger RO-RO Ferry Damage Stability – Status and Development of International Regulations’, International Conference on the Design and Operation of Ferries and Ro-Pax Vessels, The Royal Institution of Naval Architects, London, United Kingdom, 25th and 26th May 2016, Pages 67 to 78. ISBN: 978-1-909024-54-0
  • HUTCHINSON, K.W. ‘Damage stability update’, The Naval Architect, The Royal Institution of Naval Architects, London, United Kingdom, May 2017, Pages 42 to 44. ISSN: 0306-0209
  • HUTCHINSON, K.W. and SCOTT, A.L. ‘Damage stability: upcoming SOLAS 2020 regulations’, The Naval Architect, The Royal Institution of Naval Architects, London, United Kingdom, September 2017, Pages 56 to 62. ISSN: 0306-0209
  • HUTCHINSON, K.W. and SCOTT, A.L. ‘SOLAS 2020 Passenger and Cargo Ship Damage Stability Regulations’, International Conference on The Damaged Ship IV, The Royal Institution of Naval Architects, London, United Kingdom, 16th and 17th May 2018. ISBN: 978-1-909024-75-5
  • HUTCHINSON, K.W. and SCOTT, A.L. ‘Stability of RO-PAX Ships in European Waters: SOLAS 2020 and the Stockholm Agreement’, International Conference on Sustainable and Safe Passenger Ships, The Hellenic Institute of Marine Technology and the Royal Institution of Naval Architects, Yacht Club of Greece, Piraeus, Athens, Greece, 4th March 2020, Pages 19 to 32. ISBN: 978-1-911649-04-5
  • HUTCHINSON, K.W. and SCOTT, A.L. ‘SOLAS 2020 Damage Stability and beyond’, International Conference on The Damaged Ship V, The Royal Institution of Naval Architects, London, United Kingdom, 11th March 2020. ISBN: 978-1-911649-05-2
  • HUTCHINSON, K.W. and SCOTT, A.L. ‘Passenger ship damage stability: SOLAS 2020 regulations and Stockholm Agreement for RO-PAXs’, The Naval Architect, The Royal Institution of Naval Architects, London, United Kingdom, May 2020, Pages 40 to 44. ISSN: 0306-0209

Safinah Group’s in-house Chartered Engineers have extensive knowledge in the management and delivery of engineering services for complex vessels. 

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Keith Hutchinson

Head of PT & ES | Consultant 

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Keith W Hutchinson

Head of PT & ES | Consultant

Over a 30 year career as a ship designer and naval architect, Keith has been constantly at the forefront of the technical development of robust but flexible solutions for a multitude of design problems, ranging from sub 20 metre / 20 tonne high speed passenger catamarans and landing craft to FPSOs and FLNGs in excess of 500 metres long and over 700,000 tonnes displacement for the harshest of environments. He has constantly strived with clients globally to explore unknown and commonly conflicting multiple dimensional design spaces for novel, complex and bespoke merchant and offshore ship types, both new-build and conversions, such as: Offshore Production vessels (FPSOs, FSOs, FLNGs, FRSUs); Transport Ships and Barges; FloTels; Mining Ships; Gas Carriers (LNG, LPG, LH2); Shuttle Tankers and Bunker Ships (Oil and Gas); Cargo Ships; Passenger Ships etc.

Keith began his career as a Naval Architect with a major shipbuilder and also worked in ship repair. Prior to joining Safinah he was engaged in consultancy as Chief Engineer for Commercial Marine responsible for the development of ship designs, undertaking technical investigations and identifying solutions, technical governance and was Technical Authority. He was also responsible for the technical management of a large multidisciplinary merchant ship and offshore design office including Naval Architecture, Marine Structures, Marine Engineering, Electrical and Controls, and Cost Estimating functions. In addition, he was also Subject Matter Expert (SME) for the Naval Architecture domain pan-site throughout the company.

Keith has authored over 40 technical papers and articles and been invited to give numerous public and conference presentations on naval architecture and ship design. He is active in several professional learned institutions and sits on a variety of professional technical committees etc. developing standards and guidance for the maritime industry globally.

  • Member of Lloyd’s Register’s main ship Technical Committee (TC)
  • Member of Lloyd’s Register’s Offshore Technical Committee (OTC)
  • Member of Lloyd’s Register’s Naval Ship Technical Committee (NSTC)
    – Member of the Ship Design and Applications (SD&A) Inter-Sessional Working Group (ISWG)
  • Member of SNAME’s Technical and Research (T&R) Ship Design Committee (SDC)
    – Co-Chair of Panel SD-4 ‘Ship Arrangements’
    – Member of Panels SD-9 ‘Commercial Ship Design’ and SD-12 ‘Total Ship Energy Efficiency’
  • Member of SNAME’s T&R Offshore Committee (OC)
    – Member of Panel OC-9 ‘Floating Systems Robustness Checks’
  • Visiting lecturer on Ship Design at Newcastle University

Expertise

Whole Ship Design and Naval Architecture

Languages spoken

English

Qualifications

BEng(Hons), CEng, CMarEng, FRINA, FIMarEST, FSNAME

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Jakov "Bobo" Radenovic

Consultant (Americas)

Jakov joined the industry as a Coating Inspector and has worked in the protective coating industry for over 37 years. He has a wealth of experience from technical leadership positions held in Europe, Middle East, Asia/Pacific and Americas.

His speciality is in surface treatment, corrosion and fouling protection by protective coatings; from coating system & specification design to field testing and implementation, practical application, risk management and failure analysis.

Prior to joining Safinah, Jakov was working as a Technical Service Director and Chief Consultant for Global Key Accounts in renewable energy, with one of the major, global suppliers of coating solutions to Marine, Energy, Infrastructure, Industrial and Decorative sectors.

Expertise

Marine coatings and heavy-duty coatings in Energy and Infrastructure sectors

Languages spoken

Croatian, English

Qualifications

FROSIO Level 3, NACE CIP Level 1, Nautical Engineer

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