The main objective of this study is to clarify the importance of Free on Board (FOB) transactions in the Oman Commercial Law as one of the important types of marine freight transactions besides the Cost Insurance and Freight) CIF). This study will answer the following questions: • What does FOB mean and what are the differences comparing to other types of marine freight transactions? • What are the features of FOB and what is the role of documents? • What is the importance of allocating and specifying goods, and identifying the time of ownership transfer and the risks in the FOB transaction? What are the implications on the buyer and seller in the FOB transaction? • What is the liability arising from violating obligations by any one of the parties? To answer all these questions, the study will be divided into four chapters. The first chapter will shed light on the definition, features and the role of documents on FOB freight transaction. The second chapter will investigate issues related to allocating and specifying goods, identifying the transfer of ownership and the risks on both parties; the seller and the buyer. The third chapter deals with the effects of FOB freight contracts. These effects will be investigated through the obligations of both parties. The last chapter focuses on the obligations of both parties if any of them violates the contract