Claim Missing Document
Check
Articles

THE ANALYSIS FORMULATION OF THE LOWEST ASTRONOMICAL TIDE (LAT) BASED ON THE TIME OBSERVATION (THE CASE STUDY OF BENOA WATERS) Suharyo, Okol Sri; Setiadi, Johar; Sukoco, Nawanto Budi; Kuncoro, Kuncoro
JOURNAL ASRO - STTAL - INTERNATIONAL JOURNAL Vol 11 No 1 (2020): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (505.477 KB)

Abstract

According to the definition of International Hydrographic Organization (IHO) M-13 2005, the LowestAstronomical Tide (LAT) is Internationally used as chart datum, which is used as instruction for measuring thevalidation of high water surface in the Hydro-oceanography survey. It is predicted by tide prediction for 18.61years. This research is observed minimized in one year. In determining of LAT, it will be analyzed by the tideConstanta and prediction analysis.The analysis of tide Constanta will be calculated by the Rayleigh numberingmethod (the smallest quadrat), start on tide data observation for one month, two months, three months, fourmonths, six months until twelve months data of tide observation. Afterward, from that analysis results of t ideConstanta, it can be predicted the tide for 18.61 years. From this result, the prediction will be found thedifference of the LAT value of tide data less than in one year with tide data in one year. Then, from thedifference of LAT values can be analyzed at a significant level by using the statistical approach. From the resultof the LAT calculation by using data observation of tide in one year will be got the LAT position that is 43.3 cm.If comparing with LAT value which uses a variety of data less than in one year, it will result in the level ofsignificant differences. In this case, LAT value thas is calculated by data less than in one year cannot beequated with LAT which is used by observation of tide data in one year.Keywords: LAT, Tide Component, and interval of tide observation.
THE DEVELOPMENT OF STRATEGY OF INDONESIAN NAVAL REPAIRMENT AND MAINTENANCE FACILITY (FASHARKAN) TO SUPPORT THE READINESS OF BATTLESHIPS IN FIRST FLEET COMMAND BY USING TOWS METHOD (CASE STUDY FASHARKAN JAKARTA) Kuncoro, Kuncoro; Wirjodirdjo, Budisantoso; Suharyo, Okol Sri; Mustofa, As'ad Aris
JOURNAL ASRO - STTAL - INTERNATIONAL JOURNAL Vol 12 No 01 (2021): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Repair and Maintenance facility Jakarta is supporting facility component of Indonesian Naval Fleet which has duties to maintain and repair the ships that location is very strategics in Naval Base I. This is as KRI berth and technical condition preparation before doing the operation. The purpose of this research is to determine alternative strategy and roadmap for developing Fasharkan Jakarta with using TOWS analysis (Treaths Opportunities Weaknesses Strength) and ISM (Interpretative Structural Modeling). According to result of TOWS matrix analysis, SO strategy is consisting of eight strategic, four strategic for ST, nine strategic for WO, and four strategic for WT. Based on Weighting by using EFAS and IFAS matrix, WO strategy is as the choosen strategy, as the result WO strategy is become the first alternative. According to the elements clarification results for WO strategy, it gets five levels hierarchy. In this hyrarcy structure can be known that WO8 and WO9 sub strategies are in the level five position, then WO7 sub strategy in the level four strategy. Besides, in the level III is consist of WO5, in the level II is sub strategy WO1, WO3, WO6 and in the level I there are WO2 and WO4 sub strategies. Keywords: Repair and Maintenance Facility Jakarta, Developing Strategic, TOWS and ISM.
THE SELECTION OF ALTERNATIVES TRAINING SHIP TO SUBSTITUTE KRI DEWARUCI FOR NAVAL ACADEMY CADETS USING THE ANALYTIC NETWORK PROCESS (ANP) METHOD Nugroho, Sukmo Hadi; Bandono, Adi; Suharyo, Okol Sri; Novianto, Raditya
JOURNAL ASRO - STTAL - INTERNATIONAL JOURNAL Vol 11 No 1 (2020): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (388.289 KB)

Abstract

Republic of Indonesia Ship (KRI) Dewaruci is a Naval Academy Cadets' (AAL) training ship that is old. Thiscondition is very susceptible to various threats of accidents while carrying out voyages around the world to cruisethe AAL Kartika Jala Krida Kadet. The government has planned to replace KRI Dewaruci with a new trainingship. This study aims to determine the selection of new prospective makers training ship by the Analytic NetworkProcess (ANP) method. This ANP method is used because the existing data have a relationship among thecriteria and the relationship between criteria and sub-criteria. In alternative selection, there are two main criteria,namely operational requirements criteria with four sub-criteria: security, geographical conditions, skills training,transfer of technology and technical requirement criteria with five sub-criteria: machinery, navigation, trainingequipment, platform, masts, and sails. The results of this study are the alternative priorities for new training shipreplacing the best KRI Dewaruci and also the priority of the main/critical sub-criteria. The biggest alternativescore value is a training ship made by Piere Shipyard made in Spain with a score of 0.50259.Keywords: Analytic Network Process (ANP), Super Decisions, Training ship, Criteria and Sub-criteria
DETERMINING THE FIRST PRIORITY OF THE FIRST ARSENAL LOCATION TO SUPPORT THE OPERATION OF THE INDONESIAN WAR SHIP IN SECURITY OF THE EASTERN INDONESIAN SEA REGION WITH AHP METHODS A, I Nengah Putra; Nugroho, Sukmo Hadi; Suharyo, Okol Sri; Cahyanto, Cahyanto
JOURNAL ASRO - STTAL - INTERNATIONAL JOURNAL Vol 11 No 1 (2020): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (616.506 KB)

Abstract

Faced with conditions of life of the nation that continues to evolve into a multidimensional cover all areas of lifeof the nation, then certainly required the development and deployment of the total potential and power of thenation effectively. Therefore it is the power that was developed to deal with these threats must also have theability to multi-dimensional as well. Reality is always pushing to restructure the military concept of defense tobecome responsive and adaptable and tailored to the substance of the reforms in the defense. The mainproblem faced by Indonesia to develop a domestic defense industry is the inability of industry and educationsectors to absorb the fundamental aspects of the Revolution in Military Affairs (RMA). This inability does notallow Indonesia to experience significant breakthroughs in the application of RMA. So with reference to thecondition necessary to anticipate concrete steps in developing a systematic plan to build the defense industriesare able to anticipate the revolution in military affairs. Among priorities at once by selecting the appropriatestages of the development plan which includes the development of Main Equipment Weapon System, SpatialPlanning Area Defense, Civil Defense Development, and Spatial Structure of the Organization. And one of itsefforts is the creation of the ability of military logistics support system effective and efficient and responsive,which in this case is the development of Arsenal's arsenal of weapons and ammunition in terms of both qualityand quantity so that is always ready to face any condition of any contingency that would happen. Determiningpolicy location Arsenal first location contains more choices in environmental issues multiobjectiv andmulticriteria decision, then the model is proposed to be the appropriate methodology to accommodate thequalitative preference and priority-setting objectives / criteria for future development is to approach theAnalytical Hierarchy Process (AHP). Principle of the AHP method is to break breaking a complex situation andunstructured, into its component parts, arranging these variables in a section or an order of hierarchy, givingnumerical values to subjective considerations about the relative importance of each variable and analysisvarious considerations is to determine which variables have highest priority and act to influence the outcome ofthe situation. From the results of the solution by using AHP method showed that the first priority locationdetermination Arsenal 1 in the eastern region is a factor analysis of logistics operations to support operationscapabilities in integrated logistics support system that effectively and efficiently. And the locations selected forArsenal's first priority location is in the eastern region Lantamal Ambon. Keyword: Determining location - Approach of the Analytical Hierarchy Process (AHP)
PENGARUH PERGERAKAN MASSA AIR DAN DISTRIBUSI PARAMETER TEMPERATUR, SALINITAS DAN KECEPATAN SUARA PADA KOMUNIKASI KAPAL SELAM Suharyo, Okol Sri; Adrianto, Dian; Hidayah, Zainul
Jurnal Kelautan Vol 11, No 2 (2018)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v11i2.4521

Abstract

Kajian terhadap karakteristik pola propagasi gelombang akustik bawah air yang meliputi temperatur, salinitas dan kecepatan suara dapat dipergunakan untuk mendeteksi keberadaan kapal selam. Pada umumnya kapal selam melalui atau bersembunyi pada daerah-daerah bayangan (shadow zone), yaitu suatu daerah yang tidak dilalui oleh propagasi gelombang akustik. Dengan mengetahui posisi atau daerah tersebut maka dapat dipetakan daerah lalu lintas kapal selam. Program Monterey – Miami Parabolic Equation (MMPE) dipergunakan untuk mensimulasikan pola propagasi gelombang akustik, yang sebelumnya telah dilakukan uji model dengan metode Ray Tracing (frekuensi tinggi) dan Normal Mode (frekuensi rendah).  Penelitian ini memilih Selat Lombok sebagai lokus penelitian karena daerah tersebut memiliki dinamika oseanografi yang kompleks dengan bertemunya massa air dari Samudra Indonesia dan Samudra Pasifik.  Simulasi dilakukan pada 2 musim yaitu musim Barat dan musim Timur (2015-2016). Simulasi I sumber akustik diletakkan di Pulau Bali dan berpropagasi ke Timur. Simulasi II sumber akustik di Pulau Lombok dan arah propagasi ke Barat. Simulasi III sumber akustik di Pulau Bali dan berpropagasi ke Tenggara, dan Simulasi IV sumber akustik di Pulau Lombok dan arah propagasi ke Barat Laut. Dari hasil simulasi menunjukkan terbentuknya shadow zone pada seluruh stasiun penelitian kecuali pada stasiun PPSL 15 dan stasiun STN 10.  Peta jalur lalu lintas kapal selam dibuat berdasar daerah shadow zone yang terbentuk, serta penentuan tempat pemasangan alat monitoring kapal selam ditentukan berdasarkan pada daerah yang minimal/tidak terdapat shadow zone.Daerah tersebut adalah daerah antara stasiun STN 10 dan PPSL 15 dengan koordinat titik A (8.746 S – 115.622 T), B (8.746 S – 115.819 T), C (8.750 S -115.624 T) dan D (8.750 S – 115.814 T).Katakunci: Parameter Temperatur, Salinitas, Kecepatan Suara, Monterey–Miami Parabolic Equation, Monitoring Kapal Selam.ABSTRACTThe study of the characteristics of the underwater acoustic wave propagation pattern which includes temperature, salinity and sound speed can be used to detect the presence of submarines. In general, submarines through or hide in shadow areas (shadow zone), which is an area that is not traversed by the propagation of acoustic waves. By knowing the position or area, it can be mapped submarine traffic area. The Monterey - Miami Parabolic Equation (MMPE) program is used to simulate the acoustic wave propagation pattern, which has previously been tested using the Ray Tracing (high frequency) and Normal (low frequency) methods. This study chose the Lombok Strait as a research locus because the area has complex oceanographic dynamics with the meeting of water masses from the Indonesian Ocean and the Pacific Ocean. Simulations are carried out in 2 seasons namely the West and East seasons (2015-2016). The first simulation of acoustic sources was placed on the island of Bali and propagated to the East. Simulation II of acoustic sources on Lombok Island and the direction of propagation to the West. Simulation III of acoustic sources on Bali Island and propagating to the Southeast, and IV Simulation of acoustic sources on Lombok Island and direction of propagation to the North West. From the simulation results show the formation of shadow zones in all research stations except at the PPSL 15 station and STN 10 station. The submarine traffic lane map is made based on the shadow zone area formed, and the determination of the installation site of submarine monitoring equipment is determined based on the minimum area / there is no shadow zone. The area is the area between STN 10 and PPSL 15 stations with coordinates A (8,746 S - 115,622 T), B (8,746 S - 115,819 T), C (8,750 S -115,624 T) and D (8,750 S - 115,814 T).Keywords: Temperature, Salinity, Sound Speed, Monterey – Miami Parabolic Equation, Submarine Monitoring.
THE IMPLEMENTATION OF MULTI CRITERIA DECISION MAKING IN HANDLING CRIMINAL ACTIONS OF MARINE VIOLATION IN ALKI II AREA Cahyadi, Petrus Indra; Wirjodirdjo, Budisantoso; Suharyo, Okol Sri; Bastari, Avando
JOURNAL ASRO - STTAL - INTERNATIONAL JOURNAL Vol 12 No 01 (2021): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

One of the Main Duties of the Indonesian Navy (TNI AL) is to enforce the law and maintain security in the marine area of ​​national jurisdiction in accordance with the provisions of national law and international law which are then manifested in Marine Security Operations (Opskamla) The Indonesian Navy Base is one of the Opskamla components. which functions to project the strength of the Indonesian Navy to the area of ​​operation and provide ongoing administrative and logistical support to ensure the operational continuity of the elements of the Navy, carry out capacity building and conduct limited maritime security operations in the context of enforcing sovereignty and law at sea and carrying out coordination, regulation base defense. In the alternative selection of the Indonesian Navy Base in the Koarmada II work area, this study uses a combination of AHP and Topsis methods, the hierarchical structure modeling in the AHP method is influenced by the criteria and sub criteria, while for Topsis it is used as a ranking of the best alternative TNI AL bases as the initial position for Operation activities Marine Security The results obtained from the alternative weighting of the Indonesian Navy bases in sequence are the Banjarmasin Navy Base with a weight value of 0.959 more priority to be selected as a base for handling criminal offenses at sea, then the Nunukan Navy Base weight value 0.643 Palu weight value 0.589, Kendari weight value 0.333 Sangata has a weight value of 0.301, Kota Baru has a weight value of 0.265 and finally Toli-Toli has a weight value of 0.237. Keywords : Opskamla, Naval Base, Selection of bases, Indonesian Archipelago Sea Lanes (ALKI II), Analytical Hierarchy Process (AHP), Topsis.
ANALYSIS OF UTILIZATION CHLOROPHYLL-A CONCENTRATION DATA FROM REMOTE SENSING IMAGERY TO SUPPORT MARITIME SECURITY OPERATIONS (CASE STUDIES IN THE ARAFURA SEA) Suharyo, Okol Sri; Sukoco, Nawanto Budi; Setiadi, Johar; Kurniawan, Eko
JOURNAL ASRO - STTAL - INTERNATIONAL JOURNAL Vol 11 No 1 (2020): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (858.36 KB)

Abstract

Indonesia is the largest archipelago in the world with a vast ocean area and the richness of the fish. It allows theoccurrence of crime at sea, for example, is a crime of theft of fish and other marine resources. Indonesia in theregard Indonesian Navy confronted with various obstacles, among others, the limitation of the number of patrolboats that are not proportional to the extent of waters that should be on the cover as well as the limitations ofthe available budget for operational activities in the framework of the implementation of law enforcementoperations related crime at sea. With the limitation of that than required effectiveness and efficiency inoperations to crime at sea can still be implemented and the richness of the sea remains awake.The utilization ofremote sensing satellite technology capable of delivering information quickly with a broad scope. This researchuse the MODIS Aqua Image data Level 2 to detect the distributions of chlorophyll-a concentration which is anindicator of the fertility of the waters of an area the area is closely connected with the fisheries through theimplementations process of bottom-up areas with transparent high fertility rate is an area that's prone to fishtheft crime occurred. From the result of the data processing MODIS-Aqua Satellite image pattern time andlocation of the concentration of chlorophyll-a and verified by VMS data indicate that there is a close relationshipwhere a times and areas with a high concentration of chlorophyll observed a lot of fishing activity, so it is used inthis research can be used as supporting data in determining the direction and timing of the operation inparticular operations against crimes the theft of fish, finally the marine security operations could become moreeffective and efficient and success can be further improved.Keywords: Sea area, chlorophyll-a, effective and efficient.
ASSESSMENT OF TECHNOLOGY COMPETITIVENESS ABILITIES IN INDONESIAN WAR SHIP IN ASIA Ariyoko, Harun Bekti; Putra, I Nengah; Suharyo, Okol Sri
JOURNAL ASRO - STTAL - INTERNATIONAL JOURNAL Vol 10 No 3 (2019): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (464.088 KB)

Abstract

The assessment of technological competitiveness can be carried out at the level of a stage of transformation on a warship. With the dynamics of defence and security threats to the Indonesian state, both symmetrical and asymmetrical, warship technology must continue to improve combat capability and professionalism of human resources in accordance with technological developments towards the industrial revolution 4.0, in order to have a high level of competitiveness. The purpose of this study is to determine the strengths and weaknesses of warship performance through the assessment of technological capabilities. The research result, at the level of technological capability and the existing gap of fourth components, where the current level of capability on warships W has a gap of the technological development that is farthest away with countries Y and Z is the development of the level of technological capability on technical devices and followed by developments the level of technological capability in human resources (soldiers). The benefits of the research are expected to be used as material for consideration by planners and decision makers in integrating technological considerations into the planning of warship development in the modern era.Keywords: Technology Capability Assessment, Warship Technology, Techometrics
ANALYSIS OF REPLACEMENT PART TIME INTERVAL DETERMINATION OF CRITICAL WATER IN ENGINE COOLANT PUMP TYPES KRI FPB57 Suharyo, Okol Sri; Bakka, Dominggus; Soeparno, Soeparno
JOURNAL ASRO - STTAL - INTERNATIONAL JOURNAL Vol 5 (2016): Jurnal Analisis Sistem & Riset Operasi
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (924.55 KB)

Abstract

Maintenance management is required and has a very vital role for a KRI types FPB57, considering the type KRI is one Alutsista Navy who have a high frequency activity, as well as the broad range of operations support capabilities are varied so that the automatic machine is also high activity and in the end reliability will decrease. Methodology Failure Mode Effects and Criticality Analysis (FMECA) is a widely recognized tool for the study and analysis of the reliability of the design or process. Many authors in the field have emphasized specifically the usefulness of this method and its limitations. At this writing considering the lifetime of the machine and the elements therein specifically the components of the water coolant pump has had a lifetime of more than 20 years, because it can be said that the components have entered a critical period. Based on the steps Failure Mode Effects and Criticality Analysis (FMECA) through the calculation of Risk Priority Number (RPN), so we can determine the critical components of acquired 9 19 chances damage that has critical component is Angular Bearings, Cylindrical Bearings, Spacer Ring, Water Seal, shaft Seal, Seal Slip Ring, Impeller, O'Ring and shaft. These components if damaged can lead to engine breakdown. Of the optimization results indicate that the component replacement Cylindrical Bearings have the fastest time, ie 98 days. While the replacement of components with the longest time, which is a component Impeller 134 days. Besides obtain the most optimal replacement time of each component, also produced the cost of replacement is effective, it is proved by the value of the optimal CBR CBR value for all types of components is less than 1 (CBR <1).
OPTIMASI ANALISIS PERCEPATAN DAN BIAYA PROYEK DENGAN METODE ALGORITMA GENETIKA (Study kasus : Proyek Pembangunan Gedung Naval Cyber Command (NCC) Suharyo, Okol Sri; Suharjo, Bambang; Suwarsono, Tri Kairo
JOURNAL ASRO - STTAL - INTERNATIONAL JOURNAL Vol 8 (2017): Jurnal Analisis Sistem & Riset Operasi
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (584.954 KB)

Abstract

Proyek pada umumnya memiliki batas waktu (deadline), artinya proyek harus diselesaikan sebelum atau tepat pada waktu yang telah ditentukan. Keterlambatan waktu proyek yang terjadi selama pelaksanaan konstruksi dapat menjadi masalah besar dan berakibat terkena denda. Penelitian ini bertujuan untuk menentukan aktifitas mana yang dapat dilakukan percepatan durasi proyek sehingga memperoleh biaya tambahan (extra cost) yang optimal atau seminimal mungkin. Penelitian dilakukan dengan metode Perth-Cpm guna memperoleh lintasan kritis dan metode algoritma genetika dengan menggunakan program excel solver. Data yang didapat berupa RAB (Rencana Anggaran Biaya), time schedule (kurva-s), data maksimal percepatan dan data aktifitas pendahulu dari aktifitas selanjutnya. Hasil penelitian diperoleh dimana mean (rata rata) aktifitas pada lintasan kritis adalah 212,63 hari dengan standart deviasi 6,14, ekspektasi biaya Rp. 1.085.297 sehingga total biaya tambahan (extra cost) yang dikeluarkan pihak pelaksana proyek sebanyak Rp 1.525.026, akan tetapi bisa mempercepat jangka waktu pelaksanaan proyek selama 5 hari dengan percepatan pada aktifitas yang ke 72 selama 5 hari sehingga dapat menghemat biaya dibandingkan terjadi keterlambatan dalam 1 hari saja di denda sebesar 27.158.297