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Tomohiro Nakamura Susumu Ota Yoshiyuki Nakajima 《Journal of Marine Science and Technology》2001,6(1):3-12
The appearance of a number of large container ships in the 8000 TEU range raises the importance of a plan for container lashing
arrangements on deck in relation to the design of the ship. Therefore, it is expected that a new method for evaluating the
lashing arrangements on deck will be introduced which is applicable regardless of the ship's size and the lashing pattern,
instead of using the standards of several different societies, as happens at present. To evaluate the lashing arrangements
on deck, the expected maximum values of the forces acting on the containers and lashing rods should be evaluated. This paper
presents a new method of evaluating the container lashing arrangements on a container ship using an "acceleration ellipsoid."
The applicability of the acceleration ellipsoid to an evaluation of the expected maximum values of the forces was examined
by comparing the expected maximum values of the forces calculated by the long-term distribution calculation known as the "Fukuda
method," to those calculated using the acceleration ellipsoid. By comparing these results, it was confirmed that the expected
maximum values of the forces calculated using the acceleration ellipsoid were not less than those calculated through by the
long-term distribution calculation. It is concluded that the acceleration ellipsoid can be used to evaluate the expected maximum
values of the forces acting on containers and lashing rods.
Received: December 14, 2000 / Accepted: March 22, 2001 相似文献
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This article concerns thermal radiation hazards associated with unconfined liquefied natural gas (LNG) spills on water. Consequence
assessment methods were compared to clarify their model characteristics in large-scale LNG spills from an LNG carrier (LNGC).
The consequences of LNG release, pool spread, and pool fire hazards were estimated using the following practical methods:
the Federal Energy Regulatory Commission’s (FERC) method, the Sandia National Laboratories’ method, and the Fay method. The
sensitivity of consequence analysis results to the breach size of a tank was examined under the assumption that LNG is released
from a common type LNGC of 125000 m3 cargo capacity. Consequently, it was found that the FERC method is useful from the practical viewpoint of being applicable
to any breach size. Finally, thermal radiation hazards from pool fires involving spills from one of the latest and largest
LNGCs (250 000 m3 cargo capacity), which are currently considered for construction, were investigated using the recommended FERC method, and
the results are discussed in comparison with those for common type LNGCs. As a result, it was found that the maximum thermal
hazard distance is longer by only about 24% compared with the common type LNGC, whereas the spill volume is twice as much. 相似文献
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Suzanne von der Porten Yoshi Ota Andrés Cisneros-Montemayor Sherry Pictou 《Coastal management》2013,41(6):527-547
AbstractIndigenous peoples’ efforts toward environmental conservation are indivisible from their cultural identity and their social and political organizations. Indigenous resurgence, including the reinvigoration and reestablishment of Indigenous ways of living, are linked to the management, restoration, and conservation of marine and coastal ecosystems around the world. However, there remains a significant gap in the recognition and support of Indigenous governance systems in international policy discussions regarding conservation work. As a way to address this gap, we offer an analysis of marine Indigenous community-led conservation initiatives from around the world that were recipients of the UNDP Equator Prize, framed by initial research on Indigenous-led conservation in British Columbia, Canada. We highlight specific Indigenous governance strategies undertaken by such communities that foster both marine resource conservation and stewardship. The strategies we identified included practicing Indigenous traditional resource management, protection of traditional territories, Indigenous-led actions of environmental conservation, and data collection and monitoring. We also identified networking and collaboration with non-Indigenous supporters, as was reinvestment into education and capacity-building within the community. We conclude with concrete policy suggestions drawn from these cases that can help strengthen the leadership and self-determination of Indigenous peoples on local resource and environmental issues, and aid in much broader conservation efforts globally. 相似文献
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