Purpose The purpose of the report is to look into the effect of changing from air shipments to sea shipments at Tetra Pak Technical Service AB and the economical and environmental impact of such a change on the supply chain. Methodology The report is carried out by collecting the data regarding the different transportation modes in interviews with responsible persons within Tetra Pak and the transporter Geodis Wilson. The data is then simulated for general materials with suitable parameters and a general graph is generated from the simulations. The graphs are applied to the real life materials and a validation of the model is to be done. Conclusion This report shows that a maritime set up for stock refill between local and central warehouses in the affected routes are generally very interesting for heavy weight materials with high demands. There are several interesting materials even within TSAB (Tetra Pak Technical Service AB) but the spare parts business is not the most suitable area for sea transportation due to the low volumes and erratic VI materials. Despite this there are still enough incitements even within these materials to introduce a process to handle the few obviously interesting materials. Regarding the environmental impact (measured as the emission of carbon dioxide) it´s clear that sea transportation is a more sustainable alternative. But as long as the company policy is unclear regarding the value of reducing the impact or no targets are set to reduce the total impact it´s not feasible to include it as a cost in a separate decision as the one discussed in this report
