Selama beberapa dekade, negara-negara Asia seperti Korea, Jepang dan China telah memimpin industri pembuatan kapal sejak kemunduran di Eropa dan Amerika. Namun, beberapa negara berkembang seperti Indonesia, India, Brazil, dan lain-lain akan masuk juga ke industri perkapalan.Negara-negara berkembang ini menemukan mitra teknis atau penyedia informasi karena mereka berada dalam situasi pengalaman dan teknologi kecil. Kini, perusahaan pengembang galangan kapal dari negara-negara maju pembuatan kapal mendapatkan kesempatan untuk melakukan bisnis rekayasa melawan negara-negara berkembang tersebut......seperti rencana pemodelan klaster industri perkapalan di Surabaya dan sekitarnya.Titik awal dari model bisnis ini adalah untuk pembangunan galangan kapal baru. Model bisnis ini diawali dengan desain layout galangan kapal. Untuk pelaksanaan desain tata letak galangan kapal, dibutuhkan empat jenis komponen rekayasa.Komponen tersebut adalah teknik sipil, teknik bangunan, rekayasa utilitas dan teknik tata letak produksi. Di antara bagian-bagian ini, teknik tata letak produksi paling penting karena hasilnya adalah pondasi dari bagian teknik lainnya dan ini menentukan kapasitas galangan kapal selama siklus operasi kapalUntuk desain tata letak galangan kapal berada di luar jangkauan persyaratan bisnis karena sebagian besar kasus penelitian hanya ada sedikit pertimbangan tentang perkapalan yang nyata.Dalam tulisan ini, desain tata letak galangan kapal untuk tahap awal dilakukan untuk target galangan kapal yang baru direncanakan dengan metode terpadu yang mampu menangani data master aktual dari galangan kapal.Tulisan / penelitian, metode perancangan tata letak ini dibedakan dari penelitian terdahulu karena data produk aktual dari kapal dan data operasi pembuatan kapal aktual digunakan untuk estimasi area.
The shipping industry is the primary and most significant mode of international cargo transportation. The ship must comply with strict rules regarding reducing greenhouse gas (GHG) emissions as a dominant transportation mode. Liquified Natural Gas (LNG) is the primary alternative fuel option for several shipping companies. In essence, many studies recommend LNG as a transitional and alternative fuel because its emission characteristics are cleaner than other fossil fuels. Several previous investigations have been carried out to develop an action plan for integrating the use of LNG as a ship fuel. However, there have been few discussions on the estimation of GHG emission reduction and the economic efficiency of a representative LNG-fuelled ship. The recent progress on LNG-fuelled ships is systematically reviewed to summarize the pathways and highlight the core technological concepts, technical issues, current LNG-fuelled ship applications, and future outlooks regarding integrating LNG energy resources into ship power systems to measure GHG emission reductions and cost savings estimations. The report will discuss the current development in the maritime sector and the effects of the macroeconomic scale. The result reveals that future research on ship-based LNG energy systems will probably concentrate on integrating new energy source generating strategies with existing ship power systems to improve energy efficiency. Several potential research areas for future outlook were also discussed to anticipate future challenges.
Flooding is the most frequent disaster that hit Indonesia, especially in big cities with poor urban planning. Infrastructure damage has occurred, the fatalities which are likely to occur, both during floods and after floods. So far, the fatalities caused by floods are very difficult to control and even tend to increase. This condition is getting worse with the lack of facilities that support the evacuation process of flood victims. The aim of the study was to design a lifeboat that was able to evacuate flood victims and be able to overcome other problems that might arise when the evacuation process runs more efficiently. By collecting data from several agencies related to flood mitigation problems, interviews with experts, as well as several other references, it is hoped that relevant data can be collected, which can provide solutions to the problems faced. The stages of the research included the creation of concepts and the design of a hull shape that was adjusted for a flood rescue boat, a boat with high stability. By using of the Maxsurf V.8.5 and Hydromax V.8.5 program, it is expected that the design process and calculation of boat stability can be done more quickly and accurately. The results of research for several areas affected by floods, the existence of a rescue boat as a means to evacuate victims is urgently needed. So that the provision of a multifunctional flood rescue boat is the perfect solution to overcome this problem. To carry out this function, the stability of the rescue boat flood is one of the factors that must be considered so that the evacuation process can be carried out safely.
As one of the tools in the field of Energy Production, Piezoelectric is one of the most reliable and efficient system on the renewable energy. These systems holds many potential for reducing the consumption of oil and gas energy because the system will generate electricity from natural resources. For piezoelectric materials when pressed, the atomic structure inside the material will change, and thus cause the formation and spate of the dipole moment. This formation will produce changes especially in the voltage differences across piezoelectric materials. This process is called a direct piezoelectric effect. Piezoelectric materials can be integrated into the system without difficulty. This is because the material will not have moving parts, so it will not require frequent maintenance. Moreover, the piezoelectric also has the potential capability to change and convert into the electrical energy that came from strain energy applied to the system. Those converting process also could be done with direct motion and no addition at all. In addition, the material is also capable of producing power at a certain level of stress that can be easily conditioned and achieved. When using the piezoelectric material, it is usually consist of various object that have the mass that also installed to a spring, silencer and also another model as its structure. Those installaion will operates when the object itself have an external resonant frequency that could came from various sources, the results of those frequency will make the model move into a linear motion and will create energy to be accessed by another process.. The objective of the study was to find out whether the application of Piezoelectric is suitable for Renewable Sea Energy in Indonesia using wave-to-wire modeling technique.
Indonesia is the largest archipelago country in the world. Territorial disputes and illegal fishing are some main threat of maritime defense. One of the solutions is to provide a multi-mission vehicle. Submarine craft has the advantage of undetectable to ambush the threats. Hydrofoil craft has the advantage of higher speed than the conventional high-speed craft. The purpose of this research is to combine two distinctive and one conventional concept into one craft. This craft has to has a light structure to support hydrofoil mode and able to submerge. The material of the hull uses aluminum and for wing and propulsion system structure use carbon steel. This craft uses hydraulic propulsion that the main engine moves the hydraulic pump. The hydraulic pump flows oil to the hydraulic motor where located in the nacelle. The hydraulic motor rotates the shaft and propeller. This propulsion system requires the propeller to submerge in the water, therefore the strut which supports the wing and propulsion system has to design retractable. All important parameters are included in this paper.
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