... mooring systems makes it of paramount importance to evaluate their reliability in multiple scenarios. Because much larger hawser forces occur during sudden changes of wind direction than during steady-state storm conditions, fully-coupled hydrodynamic analyses and simulations were conducted for a 420,000...

... compression fatigue was found in two recent rope investigations. One of these was an HMPE mooring line on a gas carrier and the other was a nylon SPM hawser. In both incidents, the unusual rope design, with very long rope and strand lay lengths, was the root cause of the failure. This paper first describes...

.... Hydrodynamic models for the combinedDTU/DTV systems are developed and used to perform extreme response andoperability analyses. The coupled TLP/DTV TAD system is analyzed in 1, 10 and 100-year return periodenvironments. It is shown that the DTU and DTV vessel can be safely mooredtogether by hawsers without...

... Abstract Tandem transfer of crude oil and condensate in dynamic marine conditions has a long history with much accrued experience. Initial systems relied simply on a hawser connection, which was subsequently improved with the advent of Dynamic Positioning Systems. The new requirement...

... Abstract This work aims to investigate the performance of double-braided hawsers manufactured with different kinds of raw material in order to achieve experimental results to confirm that hybrid ropes - a polyester jacket and a polyamide (nylon) core - may potentially present a service life...

... system bearing requirement vertical pull buoyancy subsea system configuration export system buoy diameter hawser OTC 18085 Deepwater Oil Export Systems: Past, Present, and Future C. Blanc, J.-L. Isnard, and R. Smith, Single Buoy Moorings Inc. Copyright 2006, Offshore Technology Conference...

...-moored) LNG production or regasification barge. Side-by-side mooring arrangements, portside as well as starboard side, have been compared with three different stern-to-bow (tandem) mooring options: single hawser, bridle-type hawser, and soft yoke. The directional wave data measured in the field have been...

... coefficient natural period storm condition surface buoy unocal mooring system otc 16523 fpu riser subsea system sea engineering upstream oil & gas offshore technology conference hawser dtv wire rope water depth tlp scr OTC 16523 Design and Analysis of West Seno Floating Structures...

... on operations and, subsequently, up-time. freight & logistics services installation operator criteria standby vessel fpso operator shuttle tanker hawser offshore technology conference regulation safety requirement operation floating production system performance objective air emission...

... of the North Sea are bow loading systems (BLS), i.e. both the hawser and the hose are connected to the tanker bow section. The hawser connection for these shuttle tankers are in the vessels centerline. The position of the hose connection is in the centerline below the hawser connection on the Statfjord...

... weather-vaning mooring and contained storage reels for a single 10" offloading hose string and a mooring hawser. A helideck allowed access for maintenance crew visits. A 50,000 DWT passive tanker could be moored to offload in sea states of up to 3.6 m significant waves. The activation of the hose...

... ABSTRACT Located in the South China Sea, the WEIZHOU SINGLE POINT MOORING (SPM) is a fixed structure standing in 37.5 m water depth in an area where the risk of typhoon is significant. Connected to the near-by platform by sea-line, it is designed to permanently moor, by hawser, a 174,000 DWT...

... AESTRACT A knowledge of the behavior of H made fibre hawsers is important in drafting system response and durability in my offshore operation secluding single point end supply beat morning, deep sea towing, catenary narrating and 'salvage recovery. Though hawser quasi-static response is well...

... ABSTRACT This paper presents the results of a series of cyclic fatigue tests of 12 inch circumference double braid nylon hawsers over rollers, pulleys and a static fairlead. The purpose of the testing was to obtain data necessary to design North Sea SPM tanker loading facilities which produce...

... were performed in order to calibrate the program on a bi-articulated column, standing alone or linked to a VLCC by a hawser or a yoke in a 1 000 ft water depth. A description of the computer program and of the basin tests is given. The application to one specific case is also described and mean feature...

... leg moorings (S.A.L.M.) located close-by in slightly deeper water. The terminal, which is the largest of its kind in the world, regularly receives the world's largest V.L.C.C.s and U;L.C.C.s to be moored at these facilities. The initial hawser system used on the C.A.L.M.s (Fig 1) incorporated...

... Abstract This paper discusses the technical feasibility of applying internal friction damping (IFD) as a non destructive evaluation technique for synthetic ropes. Marine applications of interest for synthetic ropes include mooring lines and towing hawsers with specific emphasis in this paper...

... Abstract An extensive series of tests has been conducted to determine the new and used strengths of the large synthetic ropes used as hawsers at SPMs. Almost 70 tests were run on size 15 and size 6 double-braid nylon ropes.* Most of these tests involved cyclic loading to determine cycles...

... detailing technical references, etc.) and describes the lessons learnt from actually carrying it out in practice. wave-frequency motion mooring system computer simulation drift force time-history simulation environmental condition hawser frequency simulation stiffness dynamic behaviour...

... Abstract It is known that some Single Point Mooring hawsers have failed at sea after being subjected to tensile loadings never higher Than half their original breaking load. Previous work has shown relationships between rope fatigue life and maximum cyclic load in tension in the form of S c...