• 무역학회지
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• 제47권1호
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• pp.63-77
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• 2022

As customer needs for eco-friendly transportation services increase, strategies of major global shipping companies are being established to meet them. Even if logistics costs increase, more and more shippers are choosing shipping companies that fulfill their social responsibilities through decarbonization, and against this backdrop, global shipping companies want to strengthen corporate social responsiveness and reduce shipping environmental costs. In the post-corona era after COVID-19, it is necessary to review the latest Green Shipping management strategies of shipping companies emerging as a new normal for the shipping and logistics industries. This study aims to explore trends in the latest Green Shipping management strategies of global shipping companies pursuing environmental load suppression in the shipping and logistics fields. Among the previous studies, some studies analyzed the green shipping policies of major shipping countries, but they did not deal with the latest policies over time, and few previous study has conducted a fact-finding analysis on the latest Green Shipping management strategies of major shipping companies at the corporate level. This study attempted to analyze securities reports by major domestic and international shipping companies and to present the latest Green Shipping management strategies by shipping companies.

• 대한조선학회논문집
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• 제60권2호
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• pp.86-94
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• 2023

Tonnage taxation has contributed to developing the Korean maritime industry through tax relief for shipping companies. The current tonnage taxation relies on the net tonnage as an earning-capacity indicator in a merchant ship. Although the tonnage tax accords with horizontal equity, it does not match vertical equity because of the different taxable capacities of an individual company. Nowadays, maritime transport uses a dedicated vessel, and each shipping freight embeds a different value of time. It means the tonnage taxation regime should consider the added value of each shipping freight. Meanwhile, as the environmental regulations led by the International Maritime Organization are being strengthened, the Korean merchant fleet must be eco-friendly soon after. This study explores the alternative to renewing tonnage taxation by utilizing the Greenship certification and considering the ability-to-pay principle. Because the Greenship certification scheme encourages shipping decarbonization, maritime transport by a certified ocean-going vessel comes to be treated as an activity for the green economy. Special taxation for the green economy may contribute to shipping sustainability and market competitiveness.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2014년도 춘계학술대회
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• pp.203-204
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• 2014

해양환경은 세계화에 따른 해상운송에 대한 수요 증가로 그 중요성이 더욱 부각되고 있으며, 이에 따라 선진 항만에서는 해양환경보호를 위한 그린포트 수립에 대하여 노력하고 있다. 컨테이너 물동량 처리 기준으로 전 세계 5위의 항만 위상을 가진 대한민국 항만에서도 그린포트 수립을 위하여 노력하고 있으나, 대부분의 노력이 재생에너지 발전, AMP 설치, 항만시설의 연료전환과 같은 하드웨어 측면에 집중되고 있다. 본 연구의 목적은 항만운영과 같은 소프트웨어 측면에서의 그린포트 구축 방안을 모색하기 위하여 친환경 선박 평가 제도를 개발 적용하고 이를 통하여 대한민국 항만의 그린포트 구축 노력의 다각화를 모색하고 국내 항만의 글로벌 녹색경쟁력을 제고할 수 있는 대책을 제시하고자 한다.

• 대한조선학회논문집
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• 제60권6호
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• pp.397-405
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• 2023

As interest in greenhouse gas reduction has increased in all sectors, the discussion of the International Maritime Organization (IMO) to regulate pollution by ships is attracting attention in international shipping. At the 80th IMO MEPC held in July 2023, the 「2023 IMO Strategy for the Reduction of Green House Gases from Ships (MEPC. 377(80))」 was adopted, which included the net-zero target around 2050, and a firm intention to the decarbonization of the international shipping sector showed. In particular, energy, fuel and technology targets for zero or near-zero greenhouse gas emissions by 2030 were added as new targets, and total greenhouse gas emission checkpoints for 2030 and 2040 were added as an indicator for achieving the 2050 target. The IMO's goal setting for 2030, which is about seven years away, will impose a lot of technical, economic, and political burden despite the decarbonization technology of international shipping, which has grown to a significant level in a short period of time. Accordingly, this paper presents the comprehensive impact of the 2023 IMO GHG Strategy on international shipping.

• 해운물류연구
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• 제34권4호
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• pp.657-675
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• 2018

본 연구는 미국 북서부 주요항만의 그린항만을 창출하기 위한 다양한 정책프로그램들을 검토하고 이를 우리나라 주요항만에 적용하기 방안을 제시하였다. 먼저 퍼지분석과정을 토대로 우리나라 그린항만 조성을 위한 주요 정책 프로그램의 중요도를 비교 분석하였으며 중요도 분석결과 그린 쉽 인센티브 프로그램과 탄소 발자국 프로그램이 가장 중요한 정책으로 분석되었다. 먼저, 인천항에 우선적으로 도입되어야 할 정책 프로그램으로는 AMP 설치 운영, 입항 선박 감속 운항인 것으로 분석되었으며. 부산항의 경우에도 AMP설치 운영, 입항선박 감속 운항, 탄소 발자국, DPF 장착 둥이 우수한 정책으로 분석되었다. 이러한 결과들은 각 항만공사의 정책입안자들에게 실무적으로 적용 할 수 있는 시사점들을 제공해 줄 수 있을 것이다.

• 한국항해항만학회지
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• 제47권2호
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• pp.106-119
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• 2023

Due to global decarbonization movement and tightening of maritime emissions restrictions, the shipping industry is going to switch to alternative fuels. Among candidates of alternative fuel, methanol is promising for decreasing SOx and CO2 emissions, resulting in minimum climate change and meeting the goal of green shipping. In this study, a novel combined system of direct methanol solid oxide fuel cells (SOFC), proton exchange membrane fuel cells (PEMFC), gas turbine (GT), and organic Rankine cycle (ORC) targeted for marine vessels was proposed. The SOFC is the main power generator of the system, whereas the GT and PEMFC could recover waste heat from the SOFC to generate useful power and increase waste heat utilizing efficiency of the system. Thermodynamics model of the combined system and each component were established and analyzed. Energy and exergy efficiencies of subsystems and the entire system were estimated with participation of the first and second laws of thermodynamics. The energy and exergy efficiencies of the overall multigeneration system were estimated to be 76.2% and 30.3%, respectively. The combination of GT and PEMFC increased the energy efficiency by 18.91% compared to the SOFC stand-alone system. By changing the methanol distribution ratio from 0.05 to 0.4, energy and exergy efficiencies decreased by 15.49% and 5.41%, respectively. During the starting up and maneuvering period of vessels, a quick response from the power supply system and propulsion plant is necessary. Utilization of PEMFC coupled with SOFC has remarkable meaning and benefits.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2016년도 춘계학술대회
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• pp.215-216
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• 2016

그린정보화(Green Informatization)는 기후변화 문제에 대처하여 다양한 산업 분야에서 기술적인 해결책의 한 부분으로 활용되어 저탄소 녹색성장에 크게 기여하는 효과적인 수단으로 인식 되고 있다. 기업의 그린정보화를 실천하기 위하여 도입하는 친환경적인 정보시스템은 기업에서 에너지 절감과 지속가능한 사회적 책임을 이행하게 되는 실천 도구가 되고 있다. 물류기업들도 녹색물류를 실천의 일환으로 그린정보기술(Green IT)을 도입하여 온실가스 배출량을 줄이는 노력을 기울이고 있다.

• 원예과학기술지
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• 제32권2호
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• pp.202-209
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• 2014

본 연구는 사계성 딸기인 'Flamenco'와 'Goha' 품종을 이용하여 모의수출을 실시함으로써 사계성 딸기의 수출 시 저온유통 및 예냉기술의 필요성을 제안하고자 하였다. 과실을 수확한 다음 예냉, 선별, 저장, 운송, 검역 및 하역작업에 소요된 기간인 2일 경과 후부터 상온과 저온의 조건에서 유통을 실시하였다. 상온 유통은 'Flamenco'와 'Goha' 품종 모두 유통기간 1일이 경과된 후 무게손실률이 크게 증가하여 2일 경과 후 10% 정도로 증가하였으며, 'Goha' 품종이 'Flamenco' 품종에 비해서 2% 가량 중량 감모율이 높았다. 'Flamenco' 품종은 예냉처리 유무 및 상온과 저온 유통기간 동안 경도와 가용성 고형물의 함량 변화가 없는 반면, 'Goha' 품종은 차압식 예냉처리에서 상온 및 저온 유통기간 동안 경도의 감소폭이 컸고 저장 4일 경과 후에는 통풍식 예냉 및 저온유통에서 경도유지에 효과적이었다. 적정산도는 두 품종 모두 유통기간 동안 유지되거나 오히려 증가하는 양상을 보이며, 특히 'Goha' 품종에서 유통온도($P{\leq}0.001$) 및 예냉처리 유무($P{\leq}0.05$)가 적정산도에 영향을 미쳤다. 저온 유통은 딸기의 착색 및 곰팡이 발생을 지연시키는데 효과적이며, 예냉처리에 의해서 곰팡이 발생빈도를 낮출 수 있었다. 수출용 사계성 딸기의 $8^{\circ}C$ 이하의 저온에서는 유통 기간이 4일 이상 연장되며, 차압식 예냉과 통풍식 예냉의 실시는 저온유통을 실시할 경우 효과적이었다. 품종별 예냉 처리 효과는 'Flamenco' 품종은 차압식 예냉과 통풍식 예냉이 유사한 반면, 국내 육성종인 'Goha' 품종은 통풍식 예냉의 효과가 좋았다.

• 대한조선학회논문집
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• 제49권1호
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• pp.6-13
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• 2012

As ocean resources in shallow water areas are being exhausted, deep sea development is becoming common these days. Therefore floating type offshore structures are more competitive than fixed type structures, and FPSO is the most popular one these days. FPSO's are generally operated in a specific region and positioned to meet mostly head or bow waves in order to reduce roll motions. However this makes these vessels more vulnerable to green water around the bow region, and therefore the bow shape must be properly designed to mitigate green water damage. In the present study, experimental results for three different FPSO bow shapes in regular head waves were analyzed and compared to each other. Also CFD computations were carried out as a sample validation case for the database built for CFD code validation.

• 한국해양공학회지
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• 제30권1호
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• pp.44-50
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• 2016

An experimental study was performed to investigate the behavior of green water on a structure with a rectangular cross section under wave conditions, along with the flow characteristics in bubbly water flow. An experiment was conducted in a two-dimensional wave flume using an acrylic model (1/125) of FPSO BW Pioneer operating in the Gulf of Mexico under its design wave condition. The occurrence of green water, including its development, in front of the model was captured using a high-speed Charge Coupled Device (CCD) camera with the shadowgraph technique. Using consecutive images, the generation procedure for green water on the model was divided into five phases: flip through, air entrapment, wave run-up, wave overturning, and water shipping. In addition, the distinct water elevations of the green water were defined as the height of flip through, height of splashing jet, and height of freeboard exceedance, and showed a linear relationship with the incoming wave height.