 This project aimed to develop a spatial decision support system, SDSS, for marine spatial planning, MSP, using seaweed culture as an example, utilizing a multi-criteria analysis and feasibility evaluation through the Delphi method, with the goal of integrating the SDSS within the national spatial data infrastructure, NSDI, framework to improve accessibility and accuracy of spatial planning information. This article was authored by Dewey Anisytryzno, Cism Novtalia Gil and Cizino Cizino.