Today’s life and trade are highly influenced by globalization and vast on-line possibilities. International trade became the center of economic development for different companies as well as entire countries. In conducting such business crossing national borders is not unusual. Taking on an international character, such transactions are subject not only to national legislation but also to international conventions. One such convention that broadly regulates international contracts is the Vienna Convention on the International Sale of Goods (hereinafter: the CISG). This convention resolves issues regarding contract conclusion, rights, and obligations of contracting parties as well as legal remedies. It is important to mention that CISG lists certain contracts whose merits are not covered by it. Some of them are listed in Article 2 (e) of the CISG. Based on that article, the convention does not apply to contracts concerning the sale of ships, vessels, hovercraft, and aircraft. However, it does not offer any parameters for deciding what may fall under said exemption. Consequently, the parameters for the application of the exemption must be determined by interpretation. Given that each court or tribunal is left to its own visions of proper interpretation, there is still no unified opinion on which objects fall under the exemption of the aforementioned article. The problem of uneven interpretation is increasingly coming to the fore with the modernization of various objects that can be used for different forms of transport. Questions such as whether a drone should be classified in the same category as an airplane are becoming increasingly common. If the CISG wants to maintain its relevance, it must find answers to such and associated questions promptly.