Compliant

  • Murdock Engineering Co., Dallas, Texas, and finite element engineering consultant Hunt/Leslie/ Associates have used a computer to design the flexible 'controlled yielding' coupling for the world's first deepwater tension leg oil platform (TLP).

    The coupling is the critical connection between the platform hull and anchoring tubular lines that keeps the multimillion-dollar 53,500-ton TLP horizontal in severe North Sea weather.

    The primary design requirement was to reduce the bending moment in the mooring system and protect the lines from fatigue.

    The thin tubular tethering lines replace the traditional rigid platform support structure. The system is designed to operate in all weather and operating conditions.

    In addition to minimizing bending moment, the final design had to support non-symmetric loads and allow angular deflection as the buoyant platform shifts with the current to create tension on one side of the coupling and compression on other, as well as vertical tension due to buoyancy.

    Using axisymmetric elements in the ANSYS finite element program, Hunt/Leslie decided redesign of the segmented retainer ring—the metal ring that holds the upper backflange—would be sufficient to meet North Sea application requirements.

    The Murdock flexjoint system consists of alternating laminates of metal and rubber which serve as a pressure seal and load-carrying bearing. External loading is supported by controlled compression of the seal elastomer.

    The bearing design can carry an axial tension load of almost 7 million pounds in each bearing at angles to 16.6°, control lateral platform motion and prevent heave or vertical motion. In heaviest seas, the coupling will allow lateral platform movement as much as 79 feet from its neutral position.

    Murdock and Hunt/Leslie used the ANSYS finite element engineering analysis computer program to evaluate stresses and displacements in the final design of the major metal flexjoint bearing structure. Hunt/Leslie found that including friction in gap elements between mating surfaces increased stress levels of a factor of 10 percent over frictionless analysis.

    Using ANSY's axisymmetric elements, Hunt/Leslie was able to complete the critical final bearing design several months prior to completion of the three-story-high test structure.

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  • With nearly 30 years experience in producing environmentally-considerate lubricants, PANOLIN offers its VGP-compliant Greenmarine products to help operators meet EPA requirements. Not a newcomer on the market, PANOLIN Greenmarine lubricants use fully saturated synthetic esters and specially developed

  • Panolin’s Stella Maris stern tube lubricant is based on 100% saturated synthetic ester technology with performance enhancing additives. This synthetic ISO VG 68, 100, 150 and 220 Stella Maris stern tube lubricant provides biodegradability and lubricity to protect metal surfaces, while meeting VGP requirements

  • ClassNK released a new version of its PrimeShip-HULL (HCSR) ship design support software that is fully compliant with the new IACS Common Structural Rules (harmonized CSR) for oil tankers and bulk carriers. The new ship design support software is reported to be the first in the world to fully support the

  • RSC Bio Solutions said that its EnviroLogic Environmentally Acceptable Lubricants (EALs), including hydraulic, stern tube and thruster oils, and SAFECARE cleaners and their constituent components have been evaluated by independent laboratories to meet the U.S. Environmental Protection Agency (EPA) definitions

  • YANMAR America’s EPA Tier III compliant commercial marine diesel engine is rated at 755 mHP and 1900 RPM. The new 20.38-liter 6AYAM-ET uses a fully mechanical control system for easy servicing and reliable performance. The four-cycle, in-line six-cylinder 6AYAM-ET offers several key features and benefits

  • Klüberbio AG 39-602 is an environmentally acceptable adhesive lubricant for open gears and steel cables. Based on ester oil and selected additives, the grease complies with the requirements for environmentally acceptable lubricants (EALs) as defined in Appendix A of the U.S. Environmental Protection Agency’s

  • 60 years of worldwide experience plus an engine designed specifically for the United States market has made a winning combination for YANMAR’s new EPA compliant commercial engine application. The Push boat Sherry L, owned by E Squared Marine Services, LLC from Texas and repowered by Laborde Products, now

  • The Ocean Carrier Equipment Management Association recently declared the Terminal Weighing Approach (TWA) an industry best practice.   The lack of guidelines for shippers about how to comply with the SOLAS Verified Gross Mass (VGM) regulation that went into effect on July 1, 2016, has also led to a number

  • available.For vessels which have installed scrubbers, higher sulfur fuels may continue to be used. IMO’s recent agreement on the ban of carriage of non-compliant fuel assures that cheating will not be allowed providing that port states integrate this ban into their respective port state control inspection

  • known as scrubbers, and continue to burn heavy fuel oil (HFO), it will be therefore essential for the marine industry to prepare for the switch to compliant options and develop a set of actions that will minimize the risks associated with the move to new low-sulphur fuels.Establish Best PracticeFor operators

  • came with the recent announcement from Aeolus Energy Partners that the renewable installation and operation company was investing in a fleet of Jones Act-compliant vessels dedicated to the offshore wind industry.  Long a barrier to entry for foreign and domestic prospectors alike, the Jones Act, a portion of

  • MN Apr-24#41 of a new Jones Act compliant crew transfer vessel)
    April 2024 - Marine News page: 41

    and Sunrise Wind projects in New York. The vessel will be An of? cial launch ceremony was held to celebrate the com- missioning of a new Jones Act compliant crew transfer vessel berthed at Ørsted’s Operations Hub at Quonset Point, and (CTV) built for American Offshore Services (A-O-S)—the will transport

  • MN Apr-24#33 , built to ABS class and is compliant with U.S. Coast Guard)
    April 2024 - Marine News page: 33

    Master Boat Builders began building the vessel later that year. The result of these efforts is the 82-foot-long tug eWolf, built to ABS class and is compliant with U.S. Coast Guard Subchapter M regulations. Of? cially delivered to Crowley in January of this year, the vessel was heavy lifted from Ala- bama

  • MN Apr-24#31 , the sole Jones Act compliant wind tur- bine installation)
    April 2024 - Marine News page: 31

    Marine is building a CTV on spec. Work continues at Seatrium Am- FELS (formerly Keppel AmFELS), in Brownsville, Texas on Charybdis, the sole Jones Act compliant wind tur- bine installation vessel (WTIV) un- der construction in the United States. The most recent announcements have put the WTIV’s cost at

  • MN Apr-24#29 for contracting a Jones Act compliant SOV at around $180)
    April 2024 - Marine News page: 29

    “they are not getting term contracts, except for service operations vessels (SOV).” Tebaldi estimated the current cost for contracting a Jones Act compliant SOV at around $180 million. Two SOVs, contracted in 2022, are presently under construction at Edi- son Chouest facilities. ECO Edison, an SOV

  • MN Feb-24#40 control vessel pitch Tier 4-compliant diesel engines, each)
    February 2024 - Marine News page: 40

    Humphree active interceptor It will be powered by a pair of MTU 12V-4000M65R EPA ride control system will be installed to control vessel pitch Tier 4-compliant diesel engines, each delivering 2,000 Bhp and roll. Top speed will be over 28 knots, with a dead- at 1,600 rpm and turning Ni-Br-Al propellers.

  • MN Feb-24#38 is designed to ABS class and compliant with “The eWolf demonstrates)
    February 2024 - Marine News page: 38

    our company and the U.S. maritime in- the Corvus Orca ESS. dustry through the collaboration with our partners.” The vessel is designed to ABS class and compliant with “The eWolf demonstrates where the maritime indus- U.S. Coast Guard Subchapter M regulations. try can go, in terms of both innovation and sustainabil

  • MN Feb-24#21 , GLDD’s Jones Act-compliant Sub- NYSERDA OREC Agreement)
    February 2024 - Marine News page: 21

    project had also been terminated. Notwithstanding the rather Equinor and BP will look to recompete for a new contract’s termination, GLDD’s Jones Act-compliant Sub- NYSERDA OREC Agreement in 2024 (of course, with a sea Rock Installation Vessel (SRIV) remains under con- substantially higher price per megawatt-hou

  • MR Jan-24#35 posed by their produces compliant ef? uent samples to)
    January 2024 - Maritime Reporter and Engineering News page: 35

    regime is planned. dard, says Shutler, adding that the Wärtsilä MBR technology Cruise lines are already addressing the risks posed by their produces compliant ef? uent samples to the highest standards. older vessels. Scanship has a major retro? t project underway Gray water has long been an area of concern

  • MR Jan-24#34 MBR technology produces compliant ef? uent samples to)
    January 2024 - Maritime Reporter and Engineering News page: 34

    PASSENGER VESSELS ZERO WASTE Wärtsilä’s MBR technology produces compliant ef? uent samples to the highest standards. Photo credit: Wartsila Advanced water treatment systems are just the start of the cruise industry’s circular waste processing ambitions. By Wendy Laursen 34 Maritime Reporter &

  • MR Jan-24#32 DNV. The ship is also compliant with the In- (all the)
    January 2024 - Maritime Reporter and Engineering News page: 32

    con? rmed via a Clean Design notation from clas- hybrid energy management, navigation and exhaust treatment si? cation society DNV. The ship is also compliant with the In- (all the Wärtsilä equipment and systems are covered by a 10- ternational Maritime Organization’s (IMO) 2030 greenhouse year Wärtsilä

  • MR Dec-23#32 tracking, U.S. EPA Tier 4 compliant engines, Central to)
    December 2023 - Maritime Reporter and Engineering News page: 32

    ashore installation, dredging system automation, dynamic help the vessel remain as ef? cient as possible.” positioning and tracking, U.S. EPA Tier 4 compliant engines, Central to Galveston Island’s ef? ciency are its Wabtec EPA and have capabilities of running on biofuel to minimize the Tier 4 powerplants

  • MR Dec-23#15 , which will ease safe and compliant. the overall implementation)
    December 2023 - Maritime Reporter and Engineering News page: 15

    for promoting ships, freight trains, towing or any other type of vessel—stay standardization across all internal documents, which will ease safe and compliant. the overall implementation process. The Author 4. Gain approval and implement ef? ciencies to Grotsky drive widespread adoption. As Vice President

  • MN Nov-23#33 turbine ing Jones Act-compliant crew transport and transfer)
    November 2023 - Marine News page: 33

    nation’s long coastlines Transfers (BOT) is a U.S. ? ag shipping company deliver- with sustained winds in many areas and falling turbine ing Jones Act-compliant crew transport and transfer ser- costs, offshore wind could feasibly supply between 10% vices to the U.S. offshore wind market and keeping a close

  • MR Nov-23#70 rev/min, are IMO Tier III compliant. At full capac- ity)
    November 2023 - Maritime Reporter and Engineering News page: 70

    propellers, and can achieve a speed ahead of 11.5 knots. Their two CAT C32 back-up gen sets, each producing 940ekW at 1,800 rev/min, are IMO Tier III compliant. At full capac- ity, the new units will reduce 2,400 tons of green- Photo Sanmar Shipyards house gases each year. 70 Maritime Reporter & Engineering

  • MR Nov-23#67 in the U.S. and are fully compliant with the U.S. Coast)
    November 2023 - Maritime Reporter and Engineering News page: 67

    The two vessels are the ? rst Damen Multi Cats to be built dent of project services and ? eet engineering. “The Multi Cat in the U.S. and are fully compliant with the U.S. Coast Guard brings step change safety improvements to Great Lakes’ dredge and U.S. Army Corps of Engineers stability criteria. www

  • MR Nov-23#60 and SOVs must be Jones Act compliant, meaning they oil &)
    November 2023 - Maritime Reporter and Engineering News page: 60

    vessels to be deployed on U.S. wind projects, walk vessels, mainly redeployed from the Gulf of Mexico’s CTVs and SOVs must be Jones Act compliant, meaning they oil & gas sector, will also be used for turbine commissioning will be built, owned and operated by U.S. companies and per- and some

  • MT Sep-23#46 deliver long-duration IHO-compliant mul- 25,000 days at)
    September 2023 - Marine Technology Reporter page: 46

    , including high-resolution MBES and Innomar SBP cal miles from the Arctic to the Antarctic, spending some systems, and can deliver long-duration IHO-compliant mul- 25,000 days at sea. Saildrone’s masthead 360° optical cam- tibeam mapping surveys and ocean data collection at depths era system combined with

  • MT Sep-23#35 on the study of world’s wa- compliant new role. “There were)
    September 2023 - Marine Technology Reporter page: 35

    Insti- nologies that will have the greatest • IHO SP-44 Special Order tute that he could help rectify in the impact on the study of world’s wa- compliant new role. “There were substantial terways for the coming generation: • Swath sectors of up to 200º changes I [could effect] while I’m Autonomous

  • MN Oct-23#36 of offshore wind by 2030. compliant vessels needed to build)
    October 2023 - Marine News page: 36

    ramps up to meet the Biden administration’s from offshore wind farms, CTVs are among the Jones-Act- goal of 30 gigawatts (GW) of offshore wind by 2030. compliant vessels needed to build and service the pipeline “BOT is a marine logistics equipment manager, whose of new U.S. offshore wind projects. equipment

  • MN Jun-23#8 ? eet of foreign and Act-compliant SOV comes with a 40%)
    June 2023 - Marine News page: 8

    and Europe. Global Partners. According to Intelatus, the price for a newly built Jones The United States will rely on a large ? eet of foreign and Act-compliant SOV comes with a 40% to 140% premium domestic vessels as it builds up toward the Biden Adminis- compare to SOVs being built for Europe. tration’s

  • MR Aug-23#47 ? cient main engine that is compliant with NOx The value)
    August 2023 - Maritime Reporter and Engineering News page: 47

    LLP, Singapore. The new, energy-ef? cient hull design and patrol boats, with an option for three more. a fuel-ef? cient main engine that is compliant with NOx The value of the contract for the ? rst three boats is Tier III requirements, translate to a vessel with a low fuel $1B, including the

  • MR Aug-23#46 , the U.S. ? ag, Jones Act-compliant vessel was originally)
    August 2023 - Maritime Reporter and Engineering News page: 46

    said. Capable of supporting both construction and O&M activi- The SOV accommodations will be constructed to ABS ties, the U.S. ? ag, Jones Act-compliant vessel was originally Comfort Class habitability notation standards, and, Hornbeck constructed by Eastern in 2014 and will be converted at the

  • MR Aug-23#32 retro? tted switched to compliant fuel, which is always)
    August 2023 - Maritime Reporter and Engineering News page: 32

    in NOx emissions. supply ? ow is automatically shut down and immediately “It has now been over a year since all 15 of our retro? tted switched to compliant fuel, which is always available as a vessels are on water. We also welcomed a dual-fuel newbuild- standby. With these robust safety measures, BW

  • MR Aug-23#24 for 6-13 SOVs and a lon- Act-compliant offshore supply vessel)
    August 2023 - Maritime Reporter and Engineering News page: 24

    wind report identi? es a Shipbuilding Group Inc to convert a recently delivered Jones short-to-medium term requirement for 6-13 SOVs and a lon- Act-compliant offshore supply vessel into a SOV. ger-term requirement for between 40-80 units. So far, only The 279-foot vessel will undergo a series of modi