Transport industry is a very important factor for country’s development in various fields. One of them is economic, since the development of transport reinforces the trade relationships between countries and companies. This helps countries and firms to utilize the competitive advantage which may have. Therefore, the volume of transport carried out by countries could reflect their growth. This study aims to examine the efficiency (by ship class) of Greek-owed shipping companies, listed on New York stock markets. The analysis was performed via BCC model of Data Envelopment Analysis (inputs orientation).