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The KRI Nagapasa Class is a submarine of the Indonesian Navy that has the capability to deploy sea mines, launch anti-surface missiles, and release countermeasure torpedoes. However, to face the increasingly complex dynamics of the regional strategic environment, it is necessary to increase combat power through the installation of a Sub Launch Missile weapon system. Until now, the Indonesian Navy does not have a submarine equipped with this underwater missile, especially in the Chang Bogo class. This study aims to analyze and determine the most appropriate choice of Sub Launch Missile missiles to support submarine training and operations. The method used is the Analytic Hierarchy Process (AHP) with a quantitative approach. The results of the ranking of five respondents showed that the SM-39 Exocet missile was in first place with a value of 0.46424 followed by the CM708UNB with a value of 0.41461 and the UGM-84 Harpoon with a value of 0.12115. The SM-39 Exocet missile was chosen as a priority because it has technical specifications that best meet the operational needs of the Indonesian Navy (TNI AL), as well as significantly contributing to enhancing the deterrence effect and combat capability of the Nagapasa-class submarines.

Ambalat waters are the waters that are the center of attention on the border between Malaysia and Indonesia, have long been a source of potential conflict between the two countries. Maritime security in this region is very important, especially in the context of the defense and maritime security of the National Capital. The relocation of the National Capital of Jakarta to the National Capital of the Archipelago which has been planned by the Government of the Republic of Indonesia. This study aims to analyze the selection of the appropriate type of KRI to prepare for maritime defense and security in the Ambalat waters. This analysis considers various threat factors, operational patterns, and the selection of the type of KRI. We consider various technical aspects in the form of specifications, capabilities, KRI leases and are faced with the priority of High, Medium, Low threats and alternatives for selecting the type of KRI under the Escort Ship Unit (SATKOR), Fast Ship Unit (SATKAT), Submarine Unit (SATSEL). With a quantitative research method, interviews were conducted with experts to determine the threats and alternatives that were prioritized and the calculation of the Analytical Hierarchy Process (AHP) using Microsoft Excel to determine recommendations for selecting the type of KRI. The results of quantitative research show the priority of criteria that will later be narrowed down to the priority of selecting the type of KRI from various alternative choices and reviewed from the degree of threat analyzed by the researcher. Theoretically, previous theories and research can be used in this study so that they can be utilized in further research. The results of this study, the criteria that are prioritized are KRI Specifications with an assessment weight of 0.3367982, while the priority of the threat that is prioritized is the High threat with an assessment weight of 0.73127143 and the alternative KRI that is the main choice is the Eskorta Ship Unit with an assessment weight of 0.556293057.

The development of science and technology has caused the military forces of many countries to spend a lot of money and energy on research and development of automated, multi-faceted and effective (including lethal) technology. From a maritime perspective, this development has attracted widespread interest from many navies in underwater technology such as submarines and unmanned submarines. Modern submarines are now capable of moving at high speeds with very low noise levels, in addition to being able to carry weapons with very high destructive power and carry out diving operations for long periods of time. At the same time, modern unmanned underwater vehicles are now capable of carrying out various types of operations, including surveillance, minelaying, underwater surveys, and even the ability to carry long-range weapons up to thousands of kilometers away. It is undeniable that the development of other countries' navies is a real threat to Indonesia. To overcome this problem, an underwater surveillance system is needed in Indonesian waters, especially in deep waters which are likely to be used by other countries such as ALKI to carry out covert operations. This underwater surveillance system must utilize existing technological developments in order to carry out its functions effectively and sustainably, especially by using autonomous underwater vehicles (USVs). The use of USV in surveillance systems will save a lot of costs because it does not waste budget on expensive logistics, personnel, maintenance, and spare parts. This research is a research and development using mixed research methods (qualitative and quantitative) with research products in conceptual form. In this underwater surveillance system concept, USV will automatically conduct underwater contact surveillance along the ALKI II water body using sensors and software integrated into the USV.

This research evaluates the direction of Indonesia's defense policy under the leadership of President Prabowo Subianto, taking the Indonesia-Turkey strategic partnership as the main case study. Using a qualitative approach with an instrumental case study method, this research analyzes the dynamics of military cooperation that includes key projects such as the development of the Bayraktar drone, involvement in the KAAN fifth-generation fighter jet, and collaborative submarine construction plans. The results show that these partnerships represent a strategy of defense equipment diversification and strengthening the domestic defense industry, and reflect a shift in Indonesia's strategic orientation from dependence on Western countries towards a more balanced partnership with the Global South. The findings confirm that Prabowo's defense policy shows continuity from the previous period, but also brings innovation through a more pragmatic, independent and responsive approach to regional and global security challenges.