... platform clearance gravity floating production systems effect dcop mathematics of computing stability ballast platform stability formula keel tank subsea system deep-draft cylindrical offshore platform displacement calculation buoyancy insufficient stability shanghai jiao tong...

... hummock thickness configuration correspond experiment keel fragment rubble polygon hopkin approximation porosity aquarium bedstead simulator modeling floe cavity Proceedings of the Thirty-fourth (2024) International Ocean and Polar Engineering Conference Rhodes, Greece, June...

... of drillings on three ridge profiles (51 points) made it possible to assess changes in its sail, keel and total thickness at different periods of its life. Based on the data of seven thermistor strings, the dynamics of the consolidated layer thickness was determined during the observation period: an increase...

...’ impact on engineering infrastructure. On the basis of the analysis performed on 5 composite ice ridges, the following statements characterizing composite ridges can be stated: • composite ridges are characterized by high values of sail and keel compared to other ridges; • composite ridges have...

... formations, including hummocky ice, are constantly moving under the influence of wind and current, interfere with navigation and exert significant loads on marine and hydraulic structures (Sanderson, 1988), which must be taken into account when designing. hummock indenter keel croasdale asia...

... japan government interceptor partial interceptor aoa sustainability sustainable development interceptor configuration installation keel drag reduction asia government marine transportation configuration social responsibility aoa adjustment reduction reduction percentage barehull...

... in the consolidated layer of hummocks/stamukhas were built based on data from 12 thermistor chains installed on ice formations; ice freezing rate at the contact of the freezing front with various phases located in the unconsolidated part of the keel was also measured. Ratios of the thermal conductivity for the sail...

... of the consolidated layer distribution are shown depending on the study region and the ridge-building conditions. Averaged profiles of the cross-section of the ice ridge are shown, the nature of the change in the thickness of the consolidated layer concerning the sail and keel of the ice ridge is shown. Averaged...

... operation ice density ice ridge keel thickness characteristic average thickness local strength level ice first-year ice ridge drilling profile internal structure morphometric characteristic Complex Study of Large Ice Features and Assessment of Morphometric, Physical-strength and Age...

... in the ice ridge is considered. Dependence of the CL thickness change on the external ice ridge parameters (sail, keel, total thickness) is determined. It is shown that the largest CL thickness is observed in the zone, combining the maximum sail and keel. The averaged porosity distribution by vertical...

... of ice features made it possible to identify four characteristic types of stamukha keel shapes. Drift of stamukhas with the maximum duration of thirty days was recorded. INTRODUCTION Stamukhas - grounded ridged ice features (WMO, 2017) present typical forms of immobile ice in the shallow offshore...

... and consolidated layer in ice ridges. Rankine's plasticity model is applied to calculate ice loads in ridge keels. A Weibull model is useful to describe ice load peaks. The structural fatigue stress is found using structural beam theory. According to the ice thickness distribution and a proper S-N curve, fatigue...

... ABSTRACT This paper aims to numerically simulate the loading process when a moored ship is intruded by an ice ridge. Ice force caused by ice keel is calculated based on suggestions from ISO while the ice force due to consolidated layer is taken as level ice and simulated with circumferential...

...¶V NL, Canada ABSTRACT Punch tests were carried out on manufactured freshwater ice rubble keels during the Pipeline Ice Risk and Mitigation (PIRAM) and Development of Ice Ridge Keel Strength (DIRKS) projects. The majority of the tests were carried out while the keel was still in contact...

... deformation episodes are presented for each region including the frequency of occurrence of deformed ice. The variation in ice types (large individual keels, hummocky ice) area also analyzed as to their seasonal characteristics. KEY WORDS: Arctic, polar, sea-ice, sonars, ice keels, icebergs, hummocks...

... instrument drilling result level ice laser keel oikkonen ice block information ice formation dimension ice ridge 2 ice ridge void Fast methods for measuring ice ridges in full-scale Teemu Heinonen Testing & Research, Aker Arctic Technology Inc Helsinki, Finland Annu Oikkonen Marine Research...

... keel offshore wind turbine cone lake erie thickness platform design Significance of Ice Impact on Structural Integrity of a Monopile Offshore Wind Turbine in The Great Lakes Mahdi Norouzi, Eric Wells, Sorin Cioc, Efstratios Nikolaidis and Abdollah Afjeh MIME Department, The University of Toledo...

... of route, combinations of horizontal drilling and conventional construction, and protecting the pipeline in situ. KEY WORDS: Arctic; pipelines; gouging; ice; ice scour; strudel scour INTRODUCTION Seabed gouging by ice keels has long been recognized as a threat to the security of Arctic seabed pipelines...

... ABSTRACT: This paper presents a validated methodology to calculate the oscillatory loads on bilge keels of ships operating at zero forward speed in irregular sea states. To calculate these loads, the local relative fluid velocities acting normal to the bilge keel are combined with a KC...

... ABSTRACT Ice gouging demands trenches of appropriate depths to protect pipelines and other seabed facilities from loads associated with ice keel impacts and subgouge soil deformations. Design trenches are a sensitive decision in terms of development economics, hence, the rationale...