• 2019 September 26 17:41

    RS developed and implemented requirements to hull ice strengthening structures of double-acting ships

    Russian Maritime Register of Shipping (RS) says it has developed and implemented requirements to hull ice strengthening structures of double-acting ships.

    The ships that comply with the new requirements at the shipowner's discretion may be assigned the distinguishing mark DAS ( ) to the character of classification, where the RS ice class for stern-first operation is indicated in brackets. The requirements have been integrated into Part XVII of the Rules for the Classification and Construction of Sea-Going Ships as a new section. 

    The provisions of the new section are based upon R&D on hull ice strengthening structures of ships operating stern-first as well as upon RS hands-on experience received during plan approval of double-acting ships.

    The new DAS distinguishing mark requirements cover aft end design, in way of skegs and azimuth thrusters; new approximate dependencies for shape functions; determination of ice loads on the aft region.

    The requirements have been introduced into RS Rules by Circular № 314-47-1265C of 17.09.2019

    By the end of 2019 RS is to complete the development of the relevant requirements for machinery, propulsion and navigation equipment.

    The DAS concept foresees the optimisation of a ship’s hull form for efficient movement both in clear and ice-covered water. The DAS concept implementation became possible after the development of new AZIPOD azimuth thrusters. Already 40 double-acting ships of higher ice classes Arc6, Arc7 and Icebreaker6 are built to RS class.

    RS is the globally recognised leader in the development of the requirements for ice class ships. The RS-classed fleet comprises 3000 ice class ships including more than 40 icebreakers. Over 500 RS-classed ships are Arc4 and higher.




2020 July 9

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2020 July 8

18:11 Carnival Cruise Line sets ship delivery changes and related deployment plans
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17:27 Maritime partners unveil Autonomous Guard Vessel
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16:48 SaR operation in Singapore: man overboard incident
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09:23 Bunker prices rose at the Port of Saint-Petersburg, Russia (graph)
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2020 July 7

18:06 ZIM unveils new digital services
17:49 Great Arctic Regatta started in Saint Petersburg
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16:35 Optimarin successfully completes IMO G8 and USCG test programme
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15:56 New ferry line Baltic Link launched at the port of Riga
15:28 RF Government allocates RUB 320 million to subsidize shipping companies
15:02 ABP delivers project cargo using North Lincolnshire’s waterways
14:32 Air Liquide and the Port of Rotterdam Authority launch initiative for hydrogen road transport
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