Taking seriously debates in IR about the significance of materiality and noticing the prominence of materiality in contemporary counterpiracy interventions, this article combines insights from Science and Technology Studies (STS) with insights from the poststructuralist intervention literature. Both literatures highlight the importance of “constitutive effects.” Poststructuralists do so with attention to the effects of intervention in constituting, temporarily, the meaning of sovereignty, and STS scholars do so with attention to constitutive effects that processes at the level of materiality give rise to. By combining these two literatures, this article asks: how might we think about the constitutive effects of material aspects of counterpiracy interventions? This question is explored through a focus on two donor-funded pirate prisons in Somalia. By operationalizing the STS notions of coproduction (Jasanoff 2004c) and solution/problem-framings (Beck et al. 2016), the article broadens the study of how intervention practices give rise to constitutive effects by explicitly attending to processes at the level of materiality. This approach enables the article to highlight an important tension in contemporary intervention practices: a tension between donor's desire to delimit intervention contributions and the risk that such contributions (including presumably more easily delineated material aspects) give rise to effects that challenge this faith in neatly delimited forms of intervention. This tension is not only relevant in relation to Somali counterpiracy, but also in other intervention contexts. The article thus illustrates how STS insights can help advance our appreciation of the manifold dimensions and effects of contemporary interventionism.
Maritime security capacity-building is a growing field of international activity. It is an area that requires further study, as a field in its own right, but also as an archetype to develop insights for capacity-building and security sector reform in other arenas. This article is one of the first to analyse this field of activity. Our empirical focus is on the Western Indian Ocean (WIO) region. Here, international actors have launched multiple capacity-building projects, initially in response to Somali piracy. We document the significance, extent and variety of capacity-building activities in this region and examine the ways in which capacity-building at sea has incorporated innovative characteristics that develop and expand the capacity-building agenda as traditionally understood. Our conclusion highlights the need to pay more attention to the maritime domain in international security and development studies and considers ways in which the maritime capacity-building experience may offer important lessons for other fields of international policy.
This introductory note examines the development at the International Tribunal for the Law of the Sea for the year 2020. While there was no judgment in 2020, proceedings of two cases, the M/T “San Padre Pio” (No. 2) Case (Switzerland/Nigeria) and the Dispute Concerning Delimitation of the Maritime Boundary between Mauritius and Maldives in the Indian Ocean (Mauritius/Maldives), continue. Accordingly, this note discusses the issues of the two pending cases. Furthermore, there were some important events regarding the Tribunal in 2020. Among other things, this note focuses on an adoption of a Model Agreement between ITLOS and Singapore, the election of the seven members of the Tribunal, and amendments of the Rules of the Tribunal.
In previous research, there have been more investigations on methanol blended with other fuels such as diesel, biodiesel, gasoline, etc., but fewer investigations on methanol with ignition additives as a mono-fuel. To better understand the methanol mono-fuel combustion characteristics and to further apply them, a combined experimental and simulation study of methanol in a Scania heavy-duty compression ignition (CI) engine was carried out in this work. The experiments consisted of four groups with variable injection timings, variable fraction of ignition additives, variable charge air temperatures, and variable overall excess air ratios/power sweeps. Heat release rate (HRR), cylinder pressure, ignition delay and indicated efficiency were analyzed for each case. The analysis showed that the combustion type was partially premixed combustion (PPC) in some cases and diesel-like combustion in the rest. By observing all cases, the shortest ignition delay was 14.1°, and the longest was 22.8°. The indicated efficiencies were in the range of 0.35 to 0.43. Simulations and validation analyses were performed for all cases by a multi-packets model. The physical and chemical ignition delays were predicted. The physical ignition delays were in the range of 4.25 to 8.10°, and the chemical ignition delays were in the range of 6.66 to 17.1°. The chemical ignition delay was always longer than the physical one. This indicates that chemical ignition delay has to be prioritized to improve the ignition performance of methanol fuel.
Savonius hydrokinetic turbines (SHTs), categorized as emerging cyclic-type wave energy converters (WECs), have demonstrated notable potential in achieving elevated energy conversion efficiency and consistent power output. This performance is particularly observed when operating under the initial phase-locked strategy (IPLS), marking a significant advancement in the realm of wave energy harvesting. However, a thorough exploration of the influences stemming from wave conditions and turbine design remains an area that warrants further investigation for advancing the performance of SHT-WECs under the proper operational strategy. This study undertakes an exhaustive analysis of geometric parameters, encompassing turbine diameter, blade number, and thickness. An experiment-validated numerical model based on the unsteady two-phase Reynolds-averaged Navier-Stokes equations is adopted in the research. Comprehensive investigations include analyzes of flow fields around the turbine, pressure distributions on blade surfaces, and dynamic torque variations. These analyzes serve to elucidate the variation rules of hydrodynamic characteristics and their influential mechanisms. The results highlight the notable impact of the proposed "relative-short wavelength impact" on the performance of SHT-WECs operating under IPLS conditions. Notably, no significant impact is observed when the relative wavelength exceeds 17. Optimal performance is achieved with the thinnest and two-bladed turbine configuration. Moreover, optimizing the turbine diameter significantly enhances SHT-WEC conversion efficiency, with the attained maximum value reaching approximately 18.6%. This study offers a concise guideline for designing turbine diameters in alignment with specific wave conditions.
The ‘port managing body (PMB)’ plays a central role in the development of the port. Public funding for investment projects of the port managing bodies is common in the EU as well as most other countries. This paper adds to the body of knowledge on port investments and financing challenges with an analysis of data from two surveys that were carried in 2018 and 2023. This analysis yields the following conclusions. First, the PMBs in the EU have shifted their investments, in response to changing investment drivers. The increasing relevance of the transition to a net-zero economy leads to a shift towards investments in projects that reduce environmental effects and/or allow private investments in new green activities such as the production of zero-emission fuels. Second, financial bottlenecks are the most important bottlenecks for the execution of the projects of PMBs. Third, the PMBs have high aspirations with regard to public funding, both on the EU and national level. Fourth, there is a difference between two types of PMBs: state-owned commercial port development companies and the public sector embedded port authorities; the latter execute less projects without public funding and are more oriented on national public funding than on EU funding. Finally, the societal value creation of the investments of PMBs is used to justify public funding aspirations. The PMBs indicate that the majority of their investments create societal value, often by enabling emission reductions and by reduced local negative externalities.
BACKGROUND: Fatigue is a recognised risk factor for safety in seafaring. While always dangerous, fatigue in ferry shipping is especially hazardous as it may jeopardise passengers' safety. To counteract fatigue, knowledge on its determinants is important. Little, however, is known on the influence from physical and psychosocial work environment factors within ferry shipping. The aim of the study was to investigate the association between work stress in terms of physical stressors, perceived job demands and job control and different dimensions of fatigue among ferry ship employees and to test whether a potential effect of work stress was mediated by sleep satisfaction. MATERIALS AND METHODS: The design was cross-sectional. 193 respondents answered to a self-administered questionnaire including standardised scales, i.e. the Swedish Occupational Fatigue Inventory and the Copenhagen Psychosocial Questionnaire for job demands and control. The association of risk factors with fatigue was determined using hierarchical multiple linear regression analyses. RESULTS: Physical work stressors were positively associated with only one of five fatigue subscales: lack of energy. Higher levels of demands were related to more lack of energy, lack of motivation, physical exertion and sleepiness, while more control was related to lesser lack of energy, lack of motivation and sleepiness. No demand-control interaction was found. Effects of demand and control were partly mediated by sleep satisfaction. CONCLUSIONS: Although limited by its cross-sectional design this study provides support for the independent relevance of demands and control for employee fatigue in ferry shipping and for a mediating role of sleep satisfaction.
The share of renewables in the power system is increasing rapidly. Large offshore wind power plants (OWPPs) are developed at a high pace and conventional fossil fuel-based plants are decommissioned. If the OWPP gets islanded due to any contingency or in the event of a blackout, the whole OWPP will be shutdown. This paper proposes a STATCOM with a battery storage that is located at the point of common connection to an OWPP to enable OWPP energization from a fully discharged state to operate in islanded mode. The STATCOM functionality provides fast and dynamic reactive power management and the battery unit provides active power balancing capability to regulate the frequency in the island. The concept is demonstrated through time-domain simulations on an OWPP model in PSCAD. The results confirm the technical feasibility of the system.
Objective: To study enablers of bullying and harassment in the work environment on board ships.
Method: A qualitative sub-study embedded within a large population-based cross-sectional survey of the prevalence of bullying and harassment on ships in the Danish merchant fleet. The sub-study is based on in-depth semi-structured interviews and responses to open-ended questions in the survey questionnaire. In total, 32 participants were interviewed face-to-face or online. The data was imported into NVivo and coded thematically.
Results: Four themes emerged as enablers specific to the work environment on a ship: The first theme, Isolation, covers how the crew -as a group, is physically isolated from the world outside the vessel, but also that new crew members can be challenged when trying to become established inside the groups on board. The second theme, Hierarchy, encompasses how challenging the existing hierarchy based on rank is not tolerated and that the hierarchy is often maintained through bullying and harassment. The third theme, Crewing, includes how diversity related to e.g., culture, language, gender, or age/experience may create another form of hierarchy with the same negative consequences as the hierarchy based on formal rank. The fourth theme, Leadership, covers how leadership can enable both a good and an unacceptable work environment related to bullying and harassment. Conclusion: Bullying and harassment pose serious challenges to the work environment on ships. Four themes were identified as enablers of bullying and harassment. Some are a premise, but others may be improved through continued awareness and focused educational initiatives.