Maritime security in the Gulf of Guinea is a challenge that straddles multiple players and sectors, and crimes like piracy cause disruptions to international trade and shipping. During the COVID-19 pandemic, the global shipping industry tried to keep maritime security on the agenda, while advocating for global security assemblages, specifically, transnational policing initiatives as part of the maritime security governance. Using the notion of narratives and assemblage thinking, it is argued that although global shipping and Ghanaian state agents agree on the problem, they differ on which maritime security governance infrastructure to deploy, resulting in tensions between the two parties.
Using evidence from 25,250 records of vessels entering and clearing the rivers of the Chesapeake Bay, this article demonstrates that intercolonial trading captains and crews significantly reduced the number of days their vessels spent in port in Virginia between 1698 and 1766. This contraction reflected a quantifying ethos in shipping that emerged during the early age of sail as the result of mutually reinforcing legal requirements and management practices. Responding to these productivity pressures, captains embraced practices that limited sailors’ freedom and turned to enslaved sailors to guarantee their maritime labor force. Embracing unfreedom aided captains to realize the dispatch goals that helped guarantee their investors’ returns.
The decarbonisation of shipping has become a high priority on the environmental and political agenda. The prospect of implementing an Emissions Trading System (ETS) for shipping has come to prominence as a proposed mechanism for speeding up the decarbonisation of the industry, with the EU taking proactive action to include shipping within the EU ETS by 2023. This paper analyses and provides a qualitative review of the historical development of the discussions and actions taken at both global level (by the International Maritime Organization (IMO)) and at regional level within the EU. A SWOT analysis of the potential implementation of an ETS for shipping is then presented. The paper concludes that an ETS for shipping can incentivise greater investment in, and deployment of, green technologies that will have the effect of reducing the carbon footprint of the shipping industry. However, the speed and significance of this effect will depend upon the specific shipping market segment and the relative stage in shipping market cycles over time. It is further concluded that despite the imminent unilateral introduction of shipping into the EU ETS, it is important that the IMO continues its work to develop a global ETS that promotes a ‘level playing field’ for competition within the sector and eliminates the risk of carbon leakage.
Wind propulsion systems (WPS) for commercial ships can be a key ingredient to achieving the IMO green targets. Most WPS installations will operate in conjunction with propellers and marine engines in a hybrid mode, which will affect their performance. The present paper presents the development of a generic, fast, and easy tool to predict the propeller and engine performance variation, along with the cost, as a function of the wind power installed in two operation conditions: fixed ship speed and constant shaft speed. Specific focus is directed toward showing generic trends and trade-offs that inform economic decision-making. To this end, a key feature of the presented work is the ability to assess the cost–benefit of both controllable pitch propellers and fixed pitch propellers (CPPs and FPPs). This provides advice on when, in terms of WPS installation size, it is worthwhile to install which kind of propeller. CPPs are found to be more suitable for newly built wind-powered ships (>70% wind power), while a conventional FPP is satisfactory for wind-assisted ships (<70% wind power) and retrofitted installations. The results for a 91,373 GT bulk carrier showed that a WPS unloads the propeller and the engine, which leads to an increase in the propulsive efficiency and a detrimental rise of the engine specific fuel oil consumption. However, propeller gains are found to be greater than engine losses, which result in extra savings. Thus, not only does a WPS save fuel and corresponding pollutant emissions, but it also increases the entire propulsive efficiency.
The design of emission control areas (ECAs), including ECA width and sulfur limits, plays a central role in reducing sulfur emissions from shipping. To promote sustainable shipping, we investigate an ECA design problem that considers the response of liner shipping companies to ECA designs. We propose a mathematical programming model from the regulator’s perspective to optimize the ECA width and sulfur limit, with the aim of minimizing the total sulfur emissions. Embedded within this regulator’s model, we develop an internal model from the shipping liner’s perspective to determine the detoured voyage, sailing speed, and cargo transport volume with the aim of maximizing the liner’s profit. Then, we develop a tailored hybrid algorithm to solve the proposed models based on the variable neighborhood search meta-heuristic and a proposition. We validate the effectiveness of the proposed methodology through extensive numerical experiments and conduct sensitivity analyses to investigate the effect of important ECA design parameters on the final performance. The proposed methodology is then extended to incorporate heterogeneous settings for sulfur limits, which can help regulators to improve ECA design in the future.
This podcast features leading experts insights on current climate change research.
At The Climate Show, we talk to leading experts on climate change law and politics. Through a series of conversations, we explore current developments in climate change research.
Podcast hosts: Beatriz Martinez Romera, Linnéa Nordlander and Alessandro Monti.
In a new book, senior researcher Jessica Larsen analyses how relevant anti-piracy legislation was enforced when international ship contributions and regional coastal states cooperated on anti-piracy off the coast of Somalia in 2008-2016.
The book is a socio-legal study based on both clause analyses and ethnographic fieldwork. The book takes the reader on board a warship patrolling the Indian Ocean and into the courtrooms of the island nation of Seychelles, which conducted 17 piracy cases. Through interviews and observations, the book uncovers how anti-piracy legislation works in practice. Existing studies have primarily examined existing law. This book goes out into the field to also uncover applied law.
The analysis shows examples of ambiguity about which legal sources should be applied at sea. It identifies practices in court that show cases of impunity and questions legal certainty. The implications of this should be considered as counter-piracy off Somalia has been used as a model for counter-piracy elsewhere, such as in the Gulf of Guinea.
In this article, the author describes how the creation of the Danish maritime museums in 1915 and 2013 – both generously funded by maritime foundations and actors – was perceived by the shipping industry as initiatives that would help market the industry in the eyes of the public. He argues more generally that national maritime museums constitute focal points for disseminating narratives that legitimate maritime activities and establish these activities as symbols of national identities. It is suggested that maritime historians, curators and scholars reflect on the relationship between maritime industry actors and museum exhibition narratives, and consider the interests and capital that potentially underpin museums’ and curators’ decisions.
Ship designers face increasing pressure to comply with global emission reduction ambitions. Alternative fuels, potentially derived from bio-feedstock or renewable electricity, provide promising solutions to this problem. The main challenge is to identify a suitable ship power system, given not only uncertain emission requirements but also uncertain fuel and carbon emission prices. We develop a two-stage stochastic optimization model that explicitly considers uncertain fuel and carbon emission prices, as well as potential retrofits along the lifetime. The bi-objective setup of the model shows how the choice of optimal power system changes with reduced emission levels. Methanol and LNG configurations appear to be relatively robust initial choices due to their ability to run on fuel derived from different feedstocks, and their better retrofittability towards ammonia or hydrogen. From a policy perspective, our model provides insight into the effect of the different types of carbon pricing mechanisms on a shipowner's decisions.
Denne guide indeholder 8 anbefalinger til, hvordan
den grønne omstilling i Det Blå Danmark kan understøttes. Guiden er baseret på tre forskningsrapporter
fra DPU, Aarhus Universitet udarbejdet med støtte
fra Den Danske Maritime Fond i årene 2019-2022. I
rapporterne kan du læse mere om baggrunden for
anbefalingerne. Ud over anbefalingerne indeholder
guiden også refleksioner fra repræsentanter fra Det
Blå Danmark. Guiden er lavet til dig, der arbejder
med grøn omstilling; uanset om det er som udstyrsproducent, i rederierne, på skibene eller for en offentlig organisation.
I søfart handler den grønne omstilling om en række
nye tekniske løsninger, eksempelvis nye drivmidler
til skibe og nye digitale teknologier. Men den er
mere end det. Den involverer også nye måder at organisere sig på og et nyt ’mindset’, dvs. nye måder
at tænke drift og vækst på. Formålet med den ene
af rapporterne – “Grøn omstilling i det Blå DanmarkVærdier og normer for handling”— var således at
kvalificere arbejdet med den grønne omstilling
ved at kortlægge de ord, som aktørerne i Det Blå
Danmark beskriver den grønne omstilling med, de
nye typer organisering, som omstillingen kalder på,
samt de ofte oversete kulturelle og sociale betingelser, der står i vejen for eller bidrager til den grønne
omstilling.