Feeder vessel routing and transshipment coordination at a congested hub port

2021 ◽  
Vol 151 ◽  
pp. 1-21
Author(s):  
Jian Gang Jin ◽  
Qiang Meng ◽  
Hai Wang
Keyword(s):  
Feeder Vessel

Konsep Kapal Pengumpan Reguler untuk Mendukung Angkutan Laut Perintis di Wilayah Pulau-Pulau Terpencil

2019 ◽  
Vol 4 (1) ◽  
pp. 12
Author(s):  
Dany Hendrik Priatno ◽  
Samudro
Keyword(s):  
Simulation Design ◽  
Feeder Vessel

Keterbatasan sarana dan prasarana transportasi di wilayah pulau-pulau terpencil masih menjadi kendala dalam mengembangkan sektor transportasi di wilayah tersebut. Di sisi lain, wilayah ini diharapkan dapat menjadi faktor pemicu dalam peningkatan perekonomian, membuka keterisolasian, dan menjaga stabilitas dan keamanan wilayah. Pola penerapan jaringan transportasi angkutan laut dengan sistem subsidi (angkutan laut perintis) dari pemerintah sudah berjalan meski dengan berbagai kendala yang memerlukan pemikiran dan solusi tepat dalam mendukung program transportasi angkutan laut bersubsidi tersebut dalam hal efektifitas angkutan, efisiensi dan pemerataan dalam pemanfaatannya. Keterbatasan pelayanan pada rute operasional angkutan laut perintis dapat dijembatani dengan menerapkan konsep pengumpan (feeder) regular pada titik – titik singgah kapal perintis, sehingga dengan demikian rute eksisting angkutan laut perintis dapat tetap dioptimalkan, tanpa menambah jumlah titik singgah (yang berarti menambah time voyage), bahkan hal ini dapat mengurangi jumlah titik singgah kapal perintis laut. Simulasi penerapan konsep feeder pada jalur angkutan laut perintis dilakukan dan dilengkapi dengan kajian kebutuhan desain sarana kapal feeder perintis yang tepat untuk mendukung konsep sistem feeder tersebut.Keywords : feeders pioneer, operational simulation, design feeder vessel

AN EXPERIMENTAL STUDY ON THE RELATIVE MOTIONS BETWEEN A FLOATING HARBOUR TRANSHIPPER AND A FEEDER VESSEL IN REGULAR WAVES

2021 ◽  
Vol 154 (A2) ◽  
Author(s):  
G J Macfarlane ◽  
T Lilienthal ◽  
R J Ballantyne ◽  
S Ballantyne
Keyword(s):  
Open Water ◽  
Scale Model ◽  
Regular Waves ◽  
Inclement Weather ◽  
Port Operations ◽  
Physical Scale ◽  
Feeder Vessel ◽  
Primary Advantage ◽  
Exposed Location ◽  
Relative Motions

The Floating Harbour Transhipper (FHT) is a pioneering logistics solution that was designed to meet the growing demands for coastal transhipment in the mining sector as well as commercial port operations. The primary advantage of the FHT system is that it can reduce transhipment delays caused by inclement weather, by reducing relative motions between the FHT and feeder vessel. The feeder is sheltered when inside the FHT well dock when compared to the more exposed location when a feeder is in a traditional side-by-side mooring arrangement. This paper discusses previously published studies into the relative motions of vessels engaged in side-by-side mooring arrangements and also presents details and results from a series of physical scale model experiments. In these experiments, both side-by-side and aft well dock mooring arrangements are investigated. The results provide strong evidence that the FHT well dock concept can significantly reduce the heave, pitch and roll motions of feeder vessels when transhipping in open seas – this being the cornerstone of any successful open water transhipment operation.

scholarly journals An Empirical study on improvement of operation for feeder vessel route between Busan and west coast of Japan

2011 ◽  
Vol 35 (7) ◽  
pp. 605-611
Author(s):  
Sang-Youl Kim ◽  
Dong-Jin Kim ◽  
Dong-Keun Ryoo ◽  
Yong-Joo Yoo
Keyword(s):  
Empirical Study ◽  
West Coast ◽  
Feeder Vessel

scholarly journals Comparison of the Number of Image Acquisitions and Procedural Time Required for Transarterial Chemoembolization of Hepatocellular Carcinoma with and without Tumor-Feeder Detection Software

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Jin Iwazawa ◽  
Shoichi Ohue ◽  
Naoko Hashimoto ◽  
Takashi Mitani
Keyword(s):  
Hepatocellular Carcinoma ◽  
Transarterial Chemoembolization ◽  
Therapeutic Efficacy ◽  
Single Session ◽  
Feeder Vessel ◽  
Vessel Detection ◽  
Procedural Time ◽  
The Mean ◽  
Detection Software ◽  
Time Required

Purpose. To compare the number of image acquisitions and procedural time required for transarterial chemoembolization (TACE) with and without tumor-feeder detection software in cases of hepatocellular carcinoma (HCC).Materials and Methods. We retrospectively reviewed 50 cases involving software-assisted TACE (September 2011–February 2013) and 84 cases involving TACE without software assistance (January 2010–August 2011). We compared the number of image acquisitions, the overall procedural time, and the therapeutic efficacy in both groups.Results. Angiography acquisition per session reduced from 6.6 times to 4.6 times with software assistance (P<0.001). Total image acquisition significantly decreased from 10.4 times to 8.7 times with software usage (P=0.004). The mean procedural time required for a single session with software-assisted TACE (103 min) was significantly lower than that for a session without software (116 min,P=0.021). For TACE with and without software usage, the complete (68% versus 63%, resp.) and objective (78% versus 80%, resp.) response rates did not differ significantly.Conclusion. In comparison with software-unassisted TACE, automated feeder-vessel detection software-assisted TACE for HCC involved fewer image acquisitions and could be completed faster while maintaining a comparable treatment response.

Optical coherence tomography angiography and choroidal neovascularization in multifocal choroiditis: A descriptive study

2018 ◽  
Vol 28 (5) ◽  
pp. 614-621 ◽  
Author(s):  
Cyril Dutheil ◽  
Jean-François Korobelnik ◽  
Marie-Noëlle Delyfer ◽  
Marie-Bénédicte Rougier
Keyword(s):  
Optical Coherence Tomography ◽  
Choroidal Neovascularization ◽  
Morphological Analysis ◽  
Optical Coherence Tomography Angiography ◽  
Descriptive Study ◽  
Optical Coherence ◽  
Dead Tree ◽  
Dark Ring ◽  
Multifocal Choroiditis ◽  
Feeder Vessel

Purpose: To analyze the ability of optical coherence tomography angiography to identify choroidal neovascularization in multifocal choroiditis and to describe active and inactive choroidal neovascularization findings. Methods: Retrospective study of consecutive patients with multifocal choroiditis and choroidal neovascularization examined between January and November 2016. In addition to usual exams, optical coherence tomography angiography (AngioPlex™ CIRRUS™ HD-OCT model 5000; Carl Zeiss Meditec, Inc., Dublin, CA, USA) images were assessed for morphological analysis: choroidal neovascularization size, choroidal neovascularization margin (well or poorly circumscribed), choroidal neovascularization shape (tangled or interlacing), choroidal neovascularization core (feeder vessel) and dark ring around the choroidal neovascularization. Results: A total of 10 eyes were included. Optical coherence tomography angiography identified all choroidal neovascularization. Active choroidal neovascularization had well-circumscribed margins (67%), interlacing shape (83%), and a surrounding dark ring (83%). Inactive choroidal neovascularization had rather poorly circumscribed margins (75%), tangled shape, and “dead tree” appearance (50%) with less frequently a surrounding dark ring (50%). Conclusion: Optical coherence tomography angiography is adapted to confirm the diagnosis of choroidal neovascularization complicating multifocal choroiditis, but it is still insufficient to differentiate active and inactive lesions.

The Floating Harbour Transhipper: New-Generation Transhipment of Bulk Ore Products

2015 ◽  
Author(s):  
Gregor J. Macfarlane ◽  
Nicholas T. M. Johnson ◽  
Lauchlan J. Clarke ◽  
Ross J. Ballantyne ◽  
Kevin A. McTaggart
Keyword(s):  
Deep Water ◽  
Scale Model ◽  
Experimental Program ◽  
Material Transfer ◽  
Mining Operations ◽  
Sea Transport ◽  
Large Bulk ◽  
Physical Scale ◽  
Seakeeping Performance ◽  
Feeder Vessel

Bulk products such as iron ore and coal are usually shipped directly from shore facilities using large bulk carriers. This often involves significant cost due to major dredging operations, long jetties, large storage sheds and the acquisition of large tracts of coastal land. The costs of direct shore to an ocean-going export vessel (OGV) loading often run into billions of dollars — prohibitive for small- to medium-scale mining operations, particularly in remote regions with only distant access to deep water ports. The current industry standard for mitigating these issues is transhipping; the bulk cargo is transported from a smaller shore based facility to the export vessel moored in deep water by a small feeder vessel. Transhipment, while mitigating many of these issues, does introduce other concerns with respect to limiting seastate, environmentally harmful dust and potential spillage during materials transfer. The Australian company Sea Transport Corporation and the Australian Maritime College at the University of Tasmania are developing new technology for bulk ore transhipment: the floating harbour transhipper (FHT). The FHT is essentially a large floating warehouse with an aft well dock to support material transfer operations from the feeder vessel. The major advantages to the mining export industry are in the form of environmental and economic improvements, in some cases completely avoiding expensive dredging while minimising the environmentally invasive onshore infrastructure. In addition, the whole process is enclosed, therefore eliminating grab spillage and dust transport issues common to other transhipping methods. This paper presents an overview of the main hydrodynamic issues currently being investigated: primarily the interaction between multiple floating bodies close to one another in a seaway. The two primary ship-to-ship interactions that are being investigated are the effects experienced by the feeder vessel when it is docking or undocking within the FHT well dock and the interactions between the three vessels when operating in close proximity in an open seaway. A combination of physical scale model experiments and numerical techniques is employed, with a significant portion of the experimental program dedicated to the validation of the numerical simulation codes used to investigate the behaviour of the vessels. ShipMo3D is an object based library developed by DRDC for the purpose of analysing the seakeeping performance of vessels operating in a seaway in either the frequency or time domain. The capabilities of ShipMo3D are applied to this novel application in an attempt to provide realistic simulations of the interaction between the vessels of the FHT system. DualSPHysics, an open source Smoothed Particle Hydrodynamics (SPH) code, is being applied to the domain within the very restricted water environment of the FHT well dock to investigate the fluid flow behaviour and the effect that this has on the feeder vessel when entering/exiting.

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