The purpose of this paper is to improve the tactical planning of the stakeholders of the midstream liquefied natural gas (LNG) supply chain, using an optimisation…
The purpose of this paper is to improve the tactical planning of the stakeholders of the midstream liquefied natural gas (LNG) supply chain, using an optimisation approach. The results can contribute to enhance the proactivity on significant investment decisions.
A decision support tool (DST) is proposed to minimise the operational cost of a fleet of vessels. Mixed integer linear programming (MILP) used to perform contract assignment combined with a genetic algorithm solution are the foundations of the DST. The aforementioned methods present a formulation of the maritime transportation problem from the scope of tramp shipping companies.
The validation of the DST through a realistic case study illustrates its potential in generating quantitative data about the cost of the midstream LNG supply chain and the annual operations schedule for a fleet of LNG vessels.
The LNG transportation scenarios included assumptions, which were required for resource reasons, such as omission of stochasticity. Notwithstanding the assumptions made, it is to the authors’ belief that the paper meets its objectives as described above.
Potential practitioners may exploit the results to make informed decisions on the operation of LNG vessels, charter rate quotes and/or redeployment of existing fleet.
The research has a novel approach as it combines the creation of practical management tool, with a comprehensive mathematical modelling, for the midstream LNG supply chain. Quantifying future fleet costs is an alternative approach, which may improve the planning procedure of a tramp shipping company.
The development of the current European economic area maritime cabotage market occurred when, at a policy level, the European Union forced the opening of its member-states…
The development of the current European economic area maritime cabotage market occurred when, at a policy level, the European Union forced the opening of its member-states cabotage markets to Community shipowners and extended this openness, in 1997, to the european free trade area countries. A two-tier cabotage market emerged, where a European economic area legislative framework co-exists with the legislative acts of each member-state. With such a unique background, this paper aims to investigate both the European economic area member-states and the rest of the world cabotage regimes and identify a list of reasons and policy measures used to implement cabotage policies.
By means of a desk research methodological approach, this paper analyses, from a geographical perspective, different countries’ cabotage policies and classifies them, and identifies in a systematically way a set of reasons and policy instruments that support each of chosen policies approach.
The outcome indicates that only a few countries promote free liberalised cabotage services and that most countries favour protectionist cabotage policies, whose governments can control the number of foreign vessels participating in these trades. Cabotage regimes have been categorised and the reasons behind both policies and respective policy instruments have been identified.
Quite often, researchers only focus on the cabotage policies of the European economic area countries, the USA, Australia, Japan and South Korea. This paper value rests on its ability to incorporate cabotage policies from other African, Asian and Latin American countries and to update existing information on the subject. Overall, this paper paves the way to broaden the cabotage knowledge.