Εκτίμηση της λειτουργικής αποδοτικότητας ναυτιλιακών επιχειρήσεων στον κλάδο των χύδην υγρών φορτίων με την Περιβάλλουσα Ανάλυση Δεδομένων
KeywordsΑποδοτικότητα ; Εταιρίες χύδην υγρών φορτίων ; Περιβάλλουσα Ανάλυση Δεδομένων ; Οικονομίες κλίμακας ; Σχέση κερδοφορίας - αποδοτικότητας ; Evaluation of efficiency ; Super efficiency DEA ; Wet shipping market ; LNG ; LPG ; Tanker sector ; Economies of scale ; Efficiency profitability matrix
A very important issue regarding the evaluation of performance of shipping companies is the measurement of a company’s operational efficiency. The majority of studies and relevant projects concerning the evaluation of efficiency have mainly focused in traditional statistical techniques, such as regression analysis and performance indicators, accordingly. In this project, we use the super efficiency model of Data Envelopment Analysis, a relatively new non- parametric method, in our attempt to measure the operational efficiency of the major listed shipping companies in the wet market. Specifically, we have used financial data from the annual reports of 23 shipping companies in the LNG/LPG & the tanker sector, for the period 2010-2013. We have also examined the relationship between economies of scale and efficiency in the shipping market. Finally, we have used the “efficiency profitability” matrix (another form of the “Boston Consulting Group” matrix) in order to determine if there is any correlation between high financial profits and improved efficiency for a shipping company. The results suggest that the majority of shipping companies have been performing efficiently during the last 4 years and that, indeed, achieving economies of scale can enhance efficiency for a shipping company. Finally, our analysis for the wet shipping market suggests that being profitable enough does not necessarily impose that a company performs efficiently in the market and as such, managers must also emphasize in achieving profitability with the lowest mix of inputs, in order to ensure long term sustainability and growth for their companies.