Saeed Jaamei

Development of planing boats has led to the achievement of proper performance in the various conditions. On the other hand, optimization and design of new body shapes has been considered by researchers. In between, Rigid Inflatable Boats (RIB) are a special and unique design of planing boats. Rigid Inflatable Boats (RIB) and Rescue Boats have better stability and buoyancy than other planing hulls and also perform better in absorbing impact loads. Also, this type of boat performs well in securing and reducing risk. The most important part of RIB vessels is the collar. Collars are like huge shock absorbers and act like a fence in marine accidents. In the present article, the complete design of the collars is discussed and the details related to the material, sections, as well as connections are examined, and then all the calculations related to the studied boat are performed. Finally, by examining the topic under discussion, it can be concluded that the presence of Collar in RIB Boats is inevitable and very important.