The vaporization of liquefied carbon dioxide (LCO2) resulting from heat transfer in undersea pipeline flow was examined in this feasibility study. The purpose of the study was to assess how several factors, including flow velocity, temperature and height, affected the rate at which CO2 evaporated in a submerged pipeline. Ansys Fluent and Aspen Plus were two of the simulation tools used for the analysis. For the assessment, the SRK thermodynamic model was chosen. Start-up, shutdown, and abnormal dynamic studies were further conducted to ascertain the safe operation of the pipeline using Aspen Plus and Aspen Dynamics. The study emphasizes the need to take heat transfer into account in the design and operation of these pipelines and offers insightful information about the behavior of CO2 in undersea pipelines. Reliable seabed and oceanographic data were obtained with the corresponding temperatures for the prediction of pipeline landfall. The maximum pressure of 76.61 barg was established at Node 11 but further drop at the last 200m pipe segment (N11 to N13) to achieve an outlet pressure of 59.72 barg. The loss of pressure was due to gravity since the fluid was directed upward to the sea platform. There was a gradual drop in temperature along the pipeline. The temperature at the pipe outlet was calculated to be 3.33oC. The results of this study can be applied to improve efficiency and lower the risk of accidents associated with the design and operation of underwater pipelines for the transportation and storage of CO2. The results in this work is significant since it offers a thorough grasp of how CO2 behaves in submerged pipes, knowledge that may be utilized to guarantee the effective and safe transit and storage of this material.