Archives - Page 2

  • PENELITIAN PEMBUATAN SISTEM BOOSTER MOTOR ROKET
    Vol. 7 No. 1 (2021)

    There are several launcher systems that can be used to launch missiles, including a catapult launcher system and a system using a booster rocket motor. Petir Missile, which is being developed by the R & D Body of the Ministry of Defense currently uses a catapult system. However, since 2018, research and development of rocket booster for Petir Missiles has been carried out. In this research, the rocket motor booster system that will be used as the initial booster of the missile is designed, analyzed, and tested. This launcher is expected to provide a more compact and faster launch system in preparation for operation. With a thrust generated of more than 350 kgf for less than 1 second, it is expected that the missile can exit the launcher properly at a minimum stall speed of 150 km/h.

  • ANALISIS PENGGUNAAN SWIMMER DELIVERY VEHICLE (SDV) DALAM OPERASI INFILTRASI SEBAGAI BAGIAN DARI PENGAWASAN DAN PENGAMANAN GARIS BATAS INDONESIA
    Vol. 7 No. 1 (2021)

    This paper discusses the importance of conducting surveillance and securing the Indonesian border by TNI soldiers. In carrying out infiltration missions, the Frog Troop Command Unit (Satkopaska) of the Indonesian Navy often has to be released from the ship to the target at a distance far enough to avoid enemy detection. For this mission, soldiers can be released from the submarine's torpedo tubes or via SDV (Swimmer Delivery Vehicle). The purpose of this study was to examine the range of release of soldiers to enemy territorial areas, the impact of the distance and depth of dives to soldiers when aiming for the target area, and the impact of diseases caused by diving in the sea. This study uses a descriptive analysis method. From the research results, it is known that diving into enemy territory without SCUBA equipment can only be carried out at a depth of less than 10 meters with a maximum duration of 2 hours. The length and depth of dives carried out by trained soldiers does not affect the health and safety of soldiers. The release process starting from the release of the SDV from the submarine and the release of soldiers from the SDV to the enemy's territory needs to take into account the range, depth of underwater transportation, and the length of operation in the target area.

  • STRATEGI UNTUK MENGANTISIPASI DAMPAK PERTUMBUHAN PENDUDUK TERHADAP PERTAHANAN NEGARA DALAM LIMA TAHUN KE DEPAN
    Vol. 7 No. 1 (2021)

    One of the progresses of a nation can be seen from the large population which becomes a capital for development. However, if it is not managed properly, the large population can actually create various problems that have the potential to become a non-military threat to national defense. This study aimed to formulate the most appropriate strategy to anticipate the threat of defense due to population problems in the next five years. This study used mixed method, in which SWOT analysis was used to determine alternative strategy based on the identification of strengths, weaknesses, opportunities, and threats. The research was conducted in three provinces, namely the Riau Islands, Central Kalimantan, and West Sulawesi. Each locus had its own characteristics and problems, so it required a different strategy. The results of the SWOT analysis showed that the best strategy for the Provinces of West Sulawesi and Central Kalimantan was the S–O strategy, namely optimizing strength to seize opportunities, while the best strategy for the Riau Islands Province was the S–T strategy, namely optimizing strength to face threats.

  • DAMPAK ALIRAN LAHAR DINGIN GUNUNG GAMALAMA TERHADAP WILAYAH PERTAHANAN DI MALUKU UTARA
    Vol. 7 No. 1 (2021)

    This was a social research which aims to analyze the impact of the cold lava disaster of Mount Gamalama on the defense area in North Maluku. The method used was a descriptive qualitative method. The main informants in this study consisted of stakeholders, especially agencies within the North Maluku Regional Government and TNI units in the region. The results of data analysis indicated that the impact of the Mount Gamalama cold lava disaster on the surrounding defense area was very significant. This can be seen from the damage to several defense facilities due to cold lava flows in 2016. Regarding the arrangement of the defense area, one of the main problems that exist today was that the North Maluku Provincial Regulation on Spatial Planning (Perda RTRW Provinsi) has not been able to accommodate the interests of the defense area in detail. This was because there was no legal basis for the Detailed Defense Area Plan (RRWP) as a legal instrument derived from the Government Regulation Number 68 of 2014. The North Maluku Provincial Regulation on Spatial Planning also has not regulated the designation of land prone to disasters and prone to being affected by cold lava and volcanic eruptions of Mount Gamalama.

  • ANALISIS PENGARUH BEKERJA DARI RUMAH TERHADAP KINERJA PEGAWAI PERTAHANAN DI MASA PANDEMI COVID-19
    Vol. 7 No. 1 (2021)

    Facing the COVID-19 pandemic, the government called on the state civil apparatus (ASN) to carry out work from home. This study aimed to analyze the effect of working from home on the performance of Balitbang Kemhan employees during the COVID-19 pandemic. This research used descriptive quantitative analysis method. Data were collected using a questionnaire distributed online to 15 employees of the Balitbang Kemhan as respondents. The results of data processing showed that there were several positive impacts of working from home, among which employees tended to feel safer and more comfortable working because they were protected from the spread of COVID-19, and reduced stress level of employees. Among the negative impacts was tiredness of working at home leading to a decline in performance.

  • KEMUNCULAN DAN PENYEBARAN RADIKALISME DI KOTA SURAKARTA (SOLO)
    Vol. 2 No. 2 (2016)

    This study aims to describe the emergence and the potency of radicalism to spread in society in Surakarta. Surakarta is a heterogen city. In this city, there are several educational institutions that can be categorized as Islamic hard liner. This is a case study which uses qualitative method and descriptive analysis to determine priority of prominent issues. The respondents for this study consisted of institutions related to religious affair and religious leaders in Surakarta. Its samples were taken randomly. The result of data analysis shows that one supporting factor to the emergence and spreading of radicalism in Surakarta is the existence of communities that already have radical ideas or understandings. This condition is supported by the existence of hard line Islamic groups, people’s carelessness towards strangers who stopped by in Surakarta, and the lack of people’s understandings that radicalism is a threat to Indonesian ideology.

  • ANALISIS PELABUHAN CILAMAYA KABUPATEN KARAWANG DALAM RANGKA MENINGKATKAN KETAHANAN EKONOMI
    Vol. 2 No. 2 (2016)

    Economic Resilience is defined as a dynamic state of nation’s economic life containing tenacity and toughness of national strength in facing and overcoming all challenges, threats, obstacles, and interference from the outside as well as from within, directly or indirectly, to ensure nation’s economic sustainability based on Pancasila and the 1945 Constitution. One attempt to achieve it is the central government’s plan to build an international port in Cilamaya District, Karawang Regency. This plan has been in effect since 2004. In the future, Cilamaya port is projected to support Tanjung Priok harbor which is currently unable to accommodate the capacity of shipping demand and container services. Economic condition in Cilamaya is still low. It can be seen from porters’ earnings that range from Rp. 60.000,- to Rp. 70.000,-/day. This earning is not comparable with the expensiveness of everyday needs. This study uses a qualitative method. Based on study of the planned site for Cilamaya port, currently there are pros and contras related to the effects of its development. Most argue if Cilamaya port is established, it would improve the standard of living and prosperity of Karawang people and its surrounding.

  • ANALISIS MINERAL YANG STRATEGIS UNTUK PERTAHANAN NEGARA DI KABUPATEN BENGKAYANG, KALIMANTAN BARAT
    Vol. 2 No. 2 (2016)

    The purpose of this study is to determine any minerals found in Bengkayang Regency, West Kalimantan, how much its content is, and how economical for state defense it is. This study uses review survey with laboratory analysis using Atomic Absorbance Spectrophotometer (AAS). The survey successfully found several strategic minerals. They and their content ppm are Manganese (Mn=5.843 ppm), Molybdenum (Mo=20 ppm), Stibium (Sb=48 ppm), Cobalt (Co=130 ppm), rare earth elements (La=410 ppm, Ce=686 ppm, Pr=243 ppm, Nd=293 ppm, Sm=82 ppm, Gd=59 ppm, Tb=5 ppm, and Yb=9 ppm). As for Chromium (Cr), Nickel (Ni), Titanium (Ti), and Vadium (V) has not been found.

  • ANCAMAN VIRUS FLU BURUNG DALAM PERSPEKTIF PERTAHANAN NEGARA
    Vol. 2 No. 2 (2016)

    Avian influenza virus naturally already exists in wild birds’ body (as host), so as the spreading of avian influenza outbreak is predicted to occur in wild birds migration pathways when the season changes in the Northern and Southern hemisphere. One of its characteristics is easy to mutate in every phase through its animal/human hosts, so that continuous report on its “epidemiological” development is required. The most urgent threat to note is the potential use of avian influenza virus as a raw material for “biological weapons” and as an instrument of terror. In order to anticipate this threat, we need a security concept which involves institutions/agencies related to levels and stages of emerging threats. Law No. 3/2002 in article 7 paragraph (3) puts governmental agencies and institutions as the spearhead in accordance with their respective field and function to handle a wide range of threats in integrated manner, including the threat of avian influenza.

  • DESAIN KONSEPTUAL AWAL TEROWONGAN ANGIN SUPERSONIK UNTUK PROSES VALIDASI HASIL CFD DALAM PERANCANGAN PESAWAT TEMPUR KFX
    Vol. 2 No. 2 (2016)

    In order to improve science and technology in aerospace, we need innovation for developing supersonic wind tunnel. This wind tunnel will be expected to support the development of KFX fighter aircraft, including task to analyze air flow that occurs in the aircraft. Considering the speed of current wind tunnel that only reach 2 Mach, in the future we need to develop wind tunnel whose speed can reach 3–4 Mach. This study uses CFD software as comparative data.

  • ANALISIS EKSPERIMENTAL KERUSAKAN PANEL FIBERGLASS REINFORCED POLYESTER AKIBAT IMPAK KECEPATAN TINGGI
    Vol. 2 No. 2 (2016)

    In this experiment, composite panel of fiberglass reinforced polyester was tested. There were three testing procedures, namely ballistic test, tensile test, and bending test. Ballistic test was administered by firing 9 mm bullet using FN 46 pistol. The firing was taken from a distance of 5 meters long to hanged specimen. After endured the ballistic test, the same specimen will be subjected to tensile test and bending test. The aim of these tests was to analyze material condition of the specimen after ballistic test. These series of tests aimed to find out the damage of fiberglass reinforced polyester composite panel caused by high-velocity impact.

  • ANALISIS LOADS MODEL PESAWAT TEMPUR IFX
    Vol. 2 No. 2 (2016)

    In this research, analysis of loads model was taken to determine critical design loads of components of the aircraft in order to find out the balance loads of the total body of still developing IFX fighter aircraft. Analysis of aircraft’s loads was taken to determine the required strength of the IFX structure. The result of research and development of IFX fighter aircraft so far shows that its loads model needs to be complemented by CFD study and wind tunnel test.

  • HASIL PENGUJIAN MODEL UJI PTTA/PUNA MALE PADA TEROWONGAN ANGIN
    Vol. 2 No. 2 (2016)

    The making of model test of Unmanned Aerial Vehicle (UAV)/Puna Medium Altitude Long Endurance (MALE) can not be separated from value correction system in the testing of some parameters. Initial testing uses simulation provided by Computational Fluids Dynamic (CFD). The resulted data will be compared with data gained from model test in wind tunnel. Afterwards, we analyze the compatibility between aerodynamics moment, pressure, temperature, model’s strain, and magnetic field around the model, related to optimal drag force and lift force according to determined aerodynamics standard. In order to administrate the testing on wind tunnel, we build model test from aluminium foil. The testing was held using closed subsonic tunnel with speed of 70 m/s, test section of 3 x 4 m, and 1:5.5 scale. This model test uses strut on UAV’s wings with upside down instalation. The analysis of model test resulted CLmax of 1.35 (with targeted value 1.55), for maximum CL/CD 21 (with targeted value 22). Therefore, we need to change the drawing and model test, especially on its fuselage’s shape, from 75% become 25% lower to the ground. As for the V tail, we need to widen its angle.

  • PENGEMBANGAN SUMBER DAYA MANUSIA BALITBANG KEMHAN: TANTANGAN DAN PELUANG
    Vol. 2 No. 2 (2016)

    The complexity of challenges and demands of the tasks in defense, as well as government’s efforts in accelerating the realization of self-sufficient domestic defense industry, require human resources who have reliability, competence, and competitiveness. Competence is a quality of employee’s ability in delivering optimal results for their organization. Accordingly, Research and Development Agency of Ministry of Defense (Balitbang Kemhan) requires reliable and competent human resources to answer the challenges of increasingly complex tasks. This paper will discuss two problems: 1) How does Research and Development Agency of Ministry of Defense attempt to develop its human resources in order to answer the challenge of its tasks that are increasingly become more complex? and 2) What guarantee is organization may offer to its personels so that they can be comfortable while in study? Based on the result of analysis and discussion, it concludes that the formation and development of human resources in defense research and development should be based on competence excellence and high integrity in accordance with the demands of future tasks. To realize the availability and readiness of competent human resources in defense sector, it is important to provide an opportunity to continue study and specific technical training which is relevant to the needs of the organization.

  • EFEK JANGKA PANJANG KEBIJAKAN TERHADAP KONDISI SOSIOKULTURAL MASYARAKAT: STUDI KASUS KOMUNITAS TIONGHOA PONDOK CINA, DEPOK
    Vol. 2 No. 2 (2016)

    As an implementation of ideas of development, every policy is surely expected to have desirable long term effect. However, some policies resulted in unintended effects which were realized after a long period of being put in effect. These unintended effects may become potential to disturb state defense whenever critical conditions come. The most obvious case to study this problem is Indonesian ethnic Chinese’s experience during the course of history. Since colonial era until post-Reformation 1998 period, this social group has been subjected to several policies. Especially during New Order’s ruling, those policies tended to be discriminative against ethnic Chinese. Its long term effect became obviously apparent when ethnic Chinese turned to be victim of pillaging and raping during some riots in 1998. This study uses ethnography as its research method, complemented by historical approach. It aims to discuss the long term effect of policies to the sociocultural construction of Indonesian ethnic Chinese. Through this discussion, it is expected that we can draw some lesson learned to formulate and implement policies which have more sensitivity to actual condition of society.

  • PERTAHANAN SIBER DALAM MENGHADAPI ANCAMAN CYBER WAR
    Vol. 2 No. 1 (2016)

    Cyber attacks could happen in Indonesia. To avoid cyber attacks, CERT (Computer Emergency Response Team) is needed by every agency that is responsible and has authority to handle critical infrastructures, such as military infrastructures, banking, transportation, supply of gas and oil refineries, telecommunications, government, power plants, and others. This paper describes the need of preparation to anticipate cyber attack because the threat is near. In preparing cyber defense, we need various efforts in many aspects: policies, institutions, infrastructures and human resources, as well as the progress in software technology.

  • ANALISIS KANDUNGAN MINERAL STRATEGIS UNTUK MENDUKUNG PERTAHANAN NEGARA
    Vol. 2 No. 1 (2016)

    Indonesia has many mountainous areas that are rich in minerals, such as petroleum (oil), natural gas, nickel, copper, bauxite, tin, coal, gold, silver, and antimony/stibnite. Antimony/stibnite’s specification which has melting point up to 630.63ºC/1,167.13ºF has strategic value to support state defense and the independence of national defense industry. Antimony/stibnite can be used for sheathing TNI’s weaponry, such as munitions cladding coatings, gun barrel coatings, and rocket coatings. This research uses survey method with sampling. The samples were taken from seven zones in Mandailing Natal Regency, North Sumatra. Those samples are analyzed through laboratory analysis in order to determine antimony/stibnite’s level (in ppm) that can be used to support state defense. Research findings in seven mineralized zones show us that none of those zones has stibnite (Sb) level with economic value. Stibnite’s highest level is only 80 ppm (MDN 22 R) that is in the Pb-Zn mineralized zones in Sibinail Village. Despite of antimony level that is not economically potential, strategically speaking, it can still support state defense. According to the result of this research, elements which have economic and strategic potency are other minerals such as copper (Cu), galena (Pb), and zinc (Zn).

  • RANCANG BANGUN KAPAL SELAM MINI 22 M
    Vol. 2 No. 1 (2016)

    This development of 22 meters light-submarine design is based on predetermined operational requirements. The operational requirements consist of some criteria among othersthe Indalsen capabilities, weapons and platform. Indalsen consists of sonar, periscope, radar and optronic. Weaponry consists of torpedoes, mines base, weapon control systems, navigation equipment, and communications equipment. Platforms consists of weight, length, width, draft, material, maneuverability and operational capability. The design process of a light-submarine consists of literature and data collection, preparation of DR&O, preliminary design platform, inner system preliminary design, evaluation and review of design and manufacture hydrodynamic test models. In the process of drafting the DR&O a methodology was prepared starting from data collection, AHP, design calculation, generic algorithm, and eventually the optimum and feasible design obtained. At the end of the process, the developed 22 meters light-submarine design capable of carrying 14 people with main LOA dimensions: 28 m; B: 4 m; H: 4 m; T: 3 m; V submerged maximum: 15 knots; Weight: 223.0 tons.

  • RANCANG BANGUN PEMBUATAN MODEL MODIFIED LIFEVEST PADA PESAWAT ANGKUT TNI ANGKATAN UDARA GUNA MENUNJANG TUGAS OPERASI MILITER SELAIN PERANG
    Vol. 2 No. 1 (2016)

    The search for plane crash victims was usually conducted by the military SAR. The activities include the search for victims of plane crash by locating the contact and the last position before the plane went missing. In addition, the search refers to the signal from Emergency Locator Transmitter (ELT) which works on the frequency of 121.5 MHz and 406 MHz. SAR team will determine the advanced techniques based on these data and the race against time so the survivors can still be evacuated. To facilitate the process, the life vest which is a safety component located under the passenger seat need to be made.

  • MEMPERKOKOH KEARIFAN LOKAL GUNA MENGHADAPI ANCAMAN NIRMILITER DI KECAMATAN JAGAKARSA, JAKARTA SELATAN
    Vol. 2 No. 1 (2016)

    This research will explore the potency of strengthening the local socio cultural wisdom as a resource to envisage the nonmilitary threat in the Jagakarsa District, South Jakarta. Jakarta represents a heterogeneous city and its society lackingin awareness to preserve the local culture. This would lead to erosion on thefeeling of unity and the inadequacy of local culture utilization as nonmilitary defensive force. The theory used in this research is the anthropological theory from Koen tjaraningrat and traditional theory from Suwarsono. This research utilized qualitative research method and descriptive analysis to determine the obtrusive problem. The informants involved in this research are the institutions pertained to the society we encountered in District of Jagakarsa which we obtain through random sampling. The analysis of the obtained data indicates the local wisdom potential of Setu Babakan society still holds in the form of gotong-royong, tolerance, musyawarah but already not whole and the efforts to uphold the local wisdom as the means to face nonmilitary threat has to be initiated through the ritual of life cycle, tourism, education curriculum and activity of artistry.

  • RANCANG BANGUN SARANA UJI COATING ANTIRADAR
    Vol. 2 No. 1 (2016)

    Since 2014 Ministry of Defense has developed a barium hexaferrite-based anti-radar material. This material will be used to coat TNI’s military vehicles. As the development has been done, it needs a testing facility to examine the material. By the existence of this testing facility, it is expected that researches on anti-radar material will be developing rapidly. The required testing facility is an anechoic chamber. The chamber is made of steel plate with a certain thickness to withstand the signal from the outside so it does not get into the room. There is also absorber in this room which serves to prevent signal reflection. Thus, the measurement can be held in ideal condition that is without any interference from outside signals or signal reflections from the measurement device. The measurements that will be carried out include Radar Cross Section (RCS). RCS measurements use a standard from the Naval Research Laboratory (NRL). The designing and developing activities result in an anechoic chamber with dimentions of 4 x 5 x 3 meters. The anechoic chamber is optimized for measurements in X-band frequency range (8.2 to 12.4 GHz). From the test results, we knew that the built anechoic chamber can be used for RCS testing for samples whose size is 5.2-70.2 cm with an accuracy up to 98%.

  • POTENSI SUMBER DAYA ALAM SEBAGAI SUMBER ENERGI BARU DAN TERBARUKAN UNTUK MENDUKUNG PERTAHANAN NEGARA
    Vol. 2 No. 1 (2016)

    National energy supply system is still oriented towards the use of fossil energy (non-renewable energy), while the volume of fossil energy reserves is dwindling and the need for energy is increasing as the population grow. The process of fossil energy formation takes a very long duration which can reach thousands or even millions of years, so that the dependence on fossil energy need to be reduced. It has to be done simustaneously with energy diversification by creating a variety of alternative energy that is easily obtained and made of various natural materials (renewable energy). The development of new and renewable energy (EBT) is directed to complement fossil energy by creating energy mix that is targeted by the government to reach 17% by 2025. This energy policy should be based on energy security whose management aims to realize energy sovereignty in which the state is required to be able in determining and controlling the sources of energy, energy prices, and energy distribution. Regions with difficulty in accessing electricity are potential for development of renewable energy by utilizing natural resources. EBT development is a tangible implementation of energy diversification as energy policy towards new and renewable energy systems in meeting the energy needs of society and the interests of national defense.

  • KONSEP DESAIN PEMBUATAN SATELIT PERTAHANAN GUNA MENJAGA KEDAULATAN WILAYAH INDONESIA
    Vol. 2 No. 1 (2016)

    This is a study of the design concept of defense satellite manufactured to protect the sovereignty of Indonesia. In 2007 Lapan has created surveillance satellite as the result of cooperation with Germany and had launched into orbit using India’s rocket. In 2014 Lapan has designed its own satellite in Bogor and will be launched in 2016 in India. The concept of defense satellite consists of the manufacture of communications satellite used for communication in military operations, the manufacture of surveillance satellite used for monitoring/observing the security throughout Indonesia territory, and the manufacture of navigational satellite used to set the navigation of the main instruments of defense system in military operations. This research will enhance the capabilities of Indonesian human resources in mastering satellite technology. The making of design concept of defense satellite is an embryo for domestic satellite manufacture. If our own defense satellite can be made, we can increase the independence of our defense industry.

  • PENENTUAN KRITERIA SEBAGAI STANDAR MEDAN LATIHAN TEMPUR TRIMATRA (GABUNGAN) GUNA MENDUKUNG TERWUJUDNYA PROFESIONALISME PRAJURIT TNI
    Vol. 2 No. 1 (2016)

    The country defense aims to ensure the sovereignty of the Republic of Indonesia. This could be achieved if the defense force is adequate and complemented with strong bargaining position and professionalism. Revolution in Military Affairs (RMA) has three main elements, namely, doctrine, technology, and tactics. According to RMA concept, research and development has very dominant role, especially to standardize combat training field that can be transformed into battlefields digitization. Combat training is the most important element in maintaining military performance in order to maintain and improve the readiness of personnels and weaponry. In order to increase military professionalism, combat training should be carried out, starting from individual training, the smallest unit level, up to the joint exercise for three military branches. Thereby, the area for combat training is a necessity that cannot be ignored. Some aspects that must be considered in determining combat training field are tactical and strategic aspects, as well as security aspects. The problem is what parameters are influential in determining combat training field for joint exercise of three TNI’s branches? The purpose of this study is to analyze the conditions of the existing combat training area for joint exercises and to formulate various criteria/parameters as ideal standard to determine combat training field for joint exercises of three TNI’s branches. This study uses Dematel method to describe the relationships among factors and to find the key factors in describing its effectiveness. The analysis results in classification about the relationships and relational strength among criteria/parameters. This result shows us that the criterion of current main instruments of defense system (Alutsista) is included in Q1. It means that this criterion has very strong relation and influence to the other sixteen criteria.

  • EFEKTIVITAS PROGRAM PENDIDIKAN KESADARAN BELA NEGARA KEMENTERIAN PERTAHANAN DI DAERAH RAWAN KONFLIK DAN PERBATASAN
    Vol. 2 No. 1 (2016)

    Fostering awareness to defend state is an everlasting process in order to maintain nation-state’s existence and identity. If the nation-state is unable to respond current situation, eventually it will lose its national identity and disappear. Thereby, fostering awareness to defend state is a long life education for Indonesia as a nation. As long as the nation and the Republic of Indonesia exists, awareness to defend state will always be needed. This study aims to examine the effectiveness of the socialization program to raise awareness to defend state in conflict-risked areas and borderlands by the Directorate of State Defense Directorate General Defense Potency Ministry of Defense and to describe the obstacles and barriers that are found in the research loci, as well as to provide solutions and recommendations to increase the effectiveness of the program in the future. This study uses analytical description as its method combined with SWOT analysis. Data was collected by questionnaire and in-depth interview. Questionnaire was filled by the respondents who already had conducted socialization program by the Ministry of Defense. The respondents consist of 25 officers, citizens, and the youth from 123 participants of technical guidence carried out by the Directorate of State Defense Directorate General Defense Potency Ministry of Defense in September 2011 in Sambas Regency, West Kalimantan.

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