The shipping industry has grown spectacularly during the last 50 years transporting nowadays, approximately, the 80–90% of goods worldwide. However, maritime transport remains a highly inefficient industry. Only in the last 10–15 years has the industry started studying how to optimize navigation speeds and digitization is just entering ports. Consequently, institutions like the International Maritime Organization (IMO) are pressing towards the adoption of measures that increase the industry efficiency, like Just-In-Time (JIT) operations. This paper shows why the Sea Traffic Management (STM) concept, based on stakeholder collaboration, is a JIT enabler. To do so, we analyze 1 year of navigation data of 33 ships, estimating the impact of JIT barriers on shipping and showing the benefits that the adoption of STM, with different maturity levels, could provide to the industry. Our evaluation shows that, only for containerships, STM can help reducing by 15–23% of fuel consumption and GHG emissions.

中文翻译：

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通过利益相关者协作实现绿色的实时导航

在过去的50年中，当今的运输业已发展成惊人的航运业，大约占全球80-90％的货物。但是，海上运输仍然是效率很低的行业。仅在最近的10-15年中，该行业才开始研究如何优化导航速度，而数字化才刚刚进入港口。因此，诸如国际海事组织（IMO）之类的机构正在敦促采取诸如准时（JIT）操作之类的提高行业效率的措施。本文说明了为什么基于利益相关者协作的海上交通管理（STM）概念是JIT的推动力。为此，我们分析了33艘船的1年导航数据，估算了JIT障碍对运输的影响，并显示了采用不同成熟度级别的STM所带来的收益，可以提供给行业。我们的评估表明，仅对于集装箱船，STM可以帮助减少15-23％的燃料消耗和温室气体排放。