The scope of this work is to try to quantify the reduction of emissions due to COVID-19; an analysis covering the entire port of Naples will be presented. The explosion of the global pandemic from SARS-CoV-2 led to the adoption of local and global countermeasures aimed at containing contagions. The transportation sector, and in particular the passenger moving sector, was deeply affected; this almost total block of movements between regions and countries if, on the one hand, seriously slowed the economy, on the other, it drastically reduced the emissions on a global and local scale. In this work, the case study of the cruise ships berthed at the Maritime Station (Stazione Marittima) in the port of Naples is examined. The traffic of cruise ships during the lockdown and in the immediately following months was analysed and compared first with respect to the calendars scheduled for the same period and then with respect to the same months of 2019. The reduction in number of cruise ships and passengers were analysed and compared to the previous trends. The vessels collected, for 2019 and 2020 (both those that arrived and those that suffered the effects of the movement block) were subsequently characterized in terms of power and speed. Finally, an estimate of the emissions of NO_X, SO_X, CO₂ produced and saved was carried out. The 2020 results will be compared with the hypothetical emissions that would have occurred in the absence of the lockdown and with those of the same period of the previous year.

这项工作的范围是尝试量化因 COVID-19 而减少的排放量；将介绍涵盖整个那不勒斯港口的分析。SARS-CoV-2 引起的全球大流行爆发导致采取了旨在遏制传染病的本地和全球对策。交通运输业，尤其是客运业，深受影响；区域和国家之间的这种几乎完全的流动，一方面严重减缓了经济，另一方面，它在全球和地方范围内大幅减少了排放量。在这项工作中，研究了停泊在那不勒斯港海事站 (Stazione Marittima) 的游轮的案例研究。对封锁期间和紧随其后几个月的游轮流量进行了分析和比较，首先与同期安排的日历，然后与 2019 年的同月进行了比较。 游轮和乘客数量的减少是分析并与之前的趋势进行比较。随后在 2019 年和 2020 年收集的船只（包括到达的船只和受到移动障碍影响的船只）在功率和速度方面进行了表征。最后，估计 NO 的排放量 2019 年和 2020 年（包括那些到达的和那些受到移动块影响的）随后在功率和速度方面进行了表征。最后，估计 NO 的排放量 2019 年和 2020 年（包括那些到达的和那些受到移动块影响的）随后在功率和速度方面进行了表征。最后，估计 NO 的排放量进行生成和保存的_X、SO _X、CO ₂。2020 年的结果将与在没有封锁的情况下发生的假设排放量以及上一年同期的排放量进行比较。