Since 1986, the northern part of the Netherlands, particularly the Province of Groningen, experienced around 1000 registered minor earthquakes. The cause of these earthquakes is gas extraction. This type of earthquake, caused by human influence, is called induced earthquakes. The Netherlands is not located in a historically seismic active area, therefore the effects of the dynamic loads due to earthquakes are not taken into account in structural designs. For Groningen Seaports, it is important to know what the potential consequences are of these earthquake loadings on the structures and facilities in the ports of Delfzijl and the Eemshaven. The breakwaters of Delfzijl and Eemshaven are one of these structures that perform a key function in the operation of the ports. In this report, the breakwaters of the Eemshaven are evaluated with respect to the effects of induced earthquakes. Induced earthquakes can result into different failure mechanisms of the Eemshaven breakwaters. The decisive mechanisms that can be initiated by the effects of induced earthquakes are: liquefaction, macro-instability, crest settlement and flow sliding. The effect or mechanism of liquefaction, and the build-up of excess pore pressures, can highly influence the other mechanisms. In this report there are uncertainties regarding the earthquake loading and information of the sand in the core of the breakwaters. For the potential of the mechanisms (except for the mechanism of flow sliding) scenarios are described with respect to earthquake loading and soil packing of the breakwater core. The respective earthquake loadings are; 0.10g, 0.175g and 0.26g, in which 0.10g is the reference Peak Ground Acceleration and 0.26g the design Peak Ground Acceleration. The respective soil packings are; loosely, moderately and densely packed sand. Simplified and simplified dynamic analysis are performed, to analyse the potential of the mechanisms. Upon the analysis of the mechanisms, under the different scenarios, a range of outcomes is obtained. Because of this, a safety philosophy is drafted. With a safety philosophy, the potential consequences for the Eemshaven breakwaters and port are described. The consequences are divided into the following classifications: Optimistic: The effects of the earthquake loadings are limited; no or small deformations/settlements are expected. No direct impact to the operationality of the port of the Eemshaven. Average: The effects of the earthquake loadings are significant; small to considerable deformations/settlements are expected. Limited direct impact to the operationality of the port of the Eemshaven. Conservative: The effects of the earthquake loadings are substantial; considerable to large deformations/settlements (instability) are expected. Significant direct impact to the operationality of the port of the Eemshaven. It can be concluded that the effects of induced earthquakes can impact the stability of the Eemshaven breakwaters. It is, however, dependent on the representative earthquake loading, soil characteristics of the breakwater core and the potential of liquefaction (excess pore pressures). Without the influence of liquefaction, the effects of induced earthquakes on the Eemshaven breakwaters are limited; only small deformations are expected. If the potential consequences are significant or substantial, different remedies/modifications can be implemented. A potential remedy/modification for liquefaction is the use of gravel drain piles. Gravel drain piles are permeable, so that build-up of excess pore pressures are limited. If the breakwaters are not affected by the effects of induced earthquakes, a large amount of deformation or even instability can still occur due to the mechanism of flow sliding. Flow sliding is likely to occur if the agglomerated sandbank consists of liquefiable layers of sand with a steep slope. Based on the findings/results it is recommended to determine the representative earthquake loading for the Eemshaven breakwaters. Subsequently, it is advisable to perform a detailed soil investigation. With this information a more complex dynamic model should be carried out. The dynamic model can indicate a more accurate response of the breakwaters to earthquake loadings and the potential/influence of excess pore pressures (liquefaction).