The operability of harbour facilities and the safety of those working within them can be compromised by overtopping. The aim of the present study is to analyse this phenomenon through a long-term field campaign, of 5 years’ duration, in the Outer Port of Punta Langosteira (Spain). Image monitoring techniques were used to identify the events, which allowed to study the influence of climatic variables and the distribution of overtopping. Results show that the place with the highest density of events was located in the central area of the third alignment. This turned out to be the area of sea wave concentration generated by the bathymetry, as shown by the propagation with a numerical model. Furthermore, wind with a magnitude greater than 30 km/h perpendicular to the breakwater increased the number of events per sea state, that is, the probability that the phenomenon will occur. In addition, the volume of 29 overtopping events and the mean discharge of 13 sea states were estimated using measurements from two pressure sensors on the crest of the breakwater. The results of this study allow to design a breakwater access warning system integrated with open access into the Port Authority’s Environmental Control Panel (http://cma.puertocoruna.com).

港口设施的可操作性以及在其中工作的人员的安全可能会因溢顶而受到影响。本研究的目的是通过在蓬塔兰格斯泰拉外港（西班牙）为期 5 年的长期实地调查来分析这一现象。图像监测技术用于识别事件，从而可以研究气候变量的影响和漫溢的分布。结果显示，事件密度最高的地方位于第三条路线的中心区域。事实证明，这是由测深产生的海浪集中区域，如数值模型的传播所示。此外，垂直于防波堤的风速大于 30 km/h 会增加每种海况的事件数量，即 该现象发生的概率。此外，还利用防波堤顶部两个压力传感器的测量结果估算了 29 次溢顶事件的流量和 13 个海况的平均流量。这项研究的结果允许设计一个防波堤通道警告系统，该系统与港务局环境控制面板 (http://cma.puertocoruna.com) 的开放通道集成。