Lloyd’s Register Issue Rules for Stern-First Ice-Class Vessels

Press Release
Thursday, April 19, 2012

The first dedicated set of rules for stern-first ice-class ships has just been published by Lloyd’s Register, answering demands for technical support, as industry continues to explore the potential of polar transportation routes and the new energy reserves in the far north.

The timely release of the rules comes as more and more ships are being ordered with options such as podded propulsion systems and azimuthing thrusters – products which can improve icebreaking capability and reduce resistance - allowing them to navigate stern-first through ice.

"These practical rules are answering a growing demand in the market and include the use of standard operational scenarios to provide designers with a basis for prescriptive rule applications which have been validated with designers and operators of these specialist ships," said Robert Tustin, Lloyd's Register's Technical Manager for New Construction in Asia.

Lloyd’s Register has had a long involvement in the development of this class of ships. Mastera and Tempera – two 106,000 dwt "double-acting" tankers owned by Neste -- were built to its class in 2002 and 2003 at Sumitomo's yard in Japan. The ships were deployed to the Baltic, where they often operate stern-first in heavy ice conditions, independent from icebreakers.

Other tankers, such as Sovcomflot’s Mikhael Ulyanov and Kiril Lavrov, were designed and built for operating stern first in ice in the Arctic. These ships, dual classed by Lloyd's Register and the Russian Maritime Register of Shipping, were designed to eventually shuttle crude from the Prirazlomnoye platform in the Pechora Sea to a floating storage and offloading unit moored off Murmansk.

The development of Lloyd's Register's new rules were supported and validated by leading ice-class tanker designers, key regulators and operators.

The interpretation of regulatory and other rule requirements - and validation of strength levels for the hull and propulsion units - were confirmed by a review of the current fleet of double-acting ships, ensuring that practical experience supported the rules' development.

They offer the following key interpretations: The ship is considered as a bow-first and stern-first vessel for application of ice-class rule requirements for hull and machinery. It is also considered a stern-first ship for the application of navigation-related rules and regulations. In other cases, the rule applies to bow-first ships only.
 

Maritime Reporter August 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

Brent Oil Hits 26-month Low Under US$97

Brent crude oil on Monday slumped to its lowest in over two years, below $97 per barrel as lacklustre economic data from China, the world's top energy consumer,

'Aker Wayfarer' Wins Petrobas Subsea Contract

Aker Solutions' subsidiary Aker Oilfield Services (AKOFS) says it has won a contract worth US$465-million over five years from Petrobras to provide subsea intervention

DP World Chairman Meets Maldivian President

DP World Chairman, and Chairman of Ports, Customs and Free Zone Corporation (PCFC), HE Sultan Ahmed Bin Sulayem has met with the President of the Maldives His

Education/Training

ESAB Boasts Over a Century of Technological Innovation

September 2014 marks the 110th anniversary of ESAB Welding & Cutting Products. A world leader in welding and cutting technology, with the broadest, most complete

SMM 2014 Witnesses Record Turnout

SMM was another full success. With more than 2,100 exhibitors from all around the world, including 150 first-timers, with 50,000 industry visitors and roughly 90,

SUNY Maritime to Host Towing Industry Forum

The State University of New York Maritime College's Department of Professional Education and Training will host its 15th annual Towing Industry Forum Wednesday, October 15, 2014.

News

PPG Offers SIGMASHIELD 1200 Coating for Shipping

PPG Industries' protective and marine coatings business is fulfilling growing demand for "ice class" marine coatings for hull protection with SIGMASHIELD® 1200 coating.

Portsmouth Marine Terminal Reopens Today

The Port of Virginia marks an important milestone Monday 14th September as Portsmouth Marine Terminal (PMT), closed for nearly three years, reopens to cargo operations.

DP World Chairman Meets Maldivian President

DP World Chairman, and Chairman of Ports, Customs and Free Zone Corporation (PCFC), HE Sultan Ahmed Bin Sulayem has met with the President of the Maldives His

Arctic Operations

PPG Offers SIGMASHIELD 1200 Coating for Shipping

PPG Industries' protective and marine coatings business is fulfilling growing demand for "ice class" marine coatings for hull protection with SIGMASHIELD® 1200 coating.

Vard Orders Rolls-Royce Equipment for Rem OCV/AH

Rolls-Royce has won a £19m contract with the Norwegian shipbuilding group Vard to deliver deck machinery, propulsion and engines to a new offshore construction

First Havyard WE Design Delivered to Fafnir Offshore

Havyard Ship Technology's build 120 'Polarsyssel', a Havyard 832 L WE design, was delivered to Fafnir Offshore yesterday. It will go straight on assignment for

 
 
Maritime Contracts Naval Architecture Navigation Offshore Oil Pipelines Salvage Ship Simulators Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1448 sec (7 req/sec)