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All Journal Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Jurnal Teknik ITS Jurnal Pendidikan Teknik Mesin International Journal of Marine Engineering Innovation and Research Jurnal Pendidikan Syura: Journal of Law

Achmad Baidowi, Achmad

Institut Teknologi Sepuluh Nopember

Author-ID : 550730

Religion Humanities Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Transportation Other

Published : 21 Documents Claim Missing Document

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Analysis of the Effects from Adding Propeller Boss Cap Fins to Skewed Propeller Performance With CFD Methods Irfan Syarief Arief; Achmad Baidowi; Anson Novendra Pradana
International Journal of Marine Engineering Innovation and Research Vol 6, No 2 (2021)
Publisher : Institut Teknologi Sepuluh Nopember

Fuel accounts for the majority of the ship's operating costs. Increased propeller efficiency can help to reduce fuel usage. The higher the efficiency, the less energy is wasted. Ships with high propeller efficiency may be able to provide more thrust while using less fuel. Propeller Boss Cap Fin (PBCF) installation is one of the solutions for improving propeller efficiency that is ideal for a submarine. PBCF may lower the submarine's energy usage, allowing it to recharge its batteries less frequently. According to certain studies, PBCF can boost propeller efficiency by 7% while lowering noise levels by nearly 6 decibels (dB). The impact of PBCF phase lag variation on skewed propeller performance and flow will be the subject of this article. CFD simulation using phase lags of 0, 12.86, 25.72, and 38.58 will be used in the study. The simulation shows that PBCF can improve propeller efficiency while lowering propeller torque. Even though all phase lag modifications show a reduction in propeller thrust. On its hub vortex, they also reveal the existence of distraction.

Effect of Design Engine Room Layout on Self-Righting System-Case Study: Fast Boat Muhammad Badrus Zaman; Achmad Baidowi; Achmad Ishlahul Fanany
International Journal of Marine Engineering Innovation and Research Vol 4, No 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

The reliable of the engine room design can affect the success of the ship both in terms of the propulsion nor the self-righting. The design of engine room is one aspect of being able to apply self-righting capabilities. There is an innovation for the development of closed fast boats with self-righting capabilities which have not yet been found in Indonesia. Self-righting is the ability of the ship to be able to return to its original position after experiencing a rolling of 180 °. The design of engine room using the inherent self-righting method is one method to be able to apply self-righting capabilities. The focus of this research is to study the effect of the gravity point on the engine room longitudinally, vertically and transverse on the ability of self-righting. In the engine room obtained LCG 4,044 m, TCG 0.006 m and VCG 0.830 m. The self-righting simulation is divided based on 5 load case conditions. The condition of load case 1 the value is max GZ 0.732 at 51.8 °. The condition of load case 2 the value is max GZ 0.672 at 70 °. The condition of load case 3 the value is max GZ 0.577 at 61.8 °. The condition of load case 4 the value is max GZ 0.687 at 69.1 °. The condition of load case 5 the value is max GZ 0.596 at 59.1 °. At the 5 load case conditions has comply the HSC 2000 code stability criteria and can apply self-righting ability because it comply the requirements of having a positive GZ value of 180 °.

Analysis of the Effect of Sloshing on Damage Stability after the Addition of LNG Tanks Agoes Santoso; Achmad Baidowi; Mardisuin Siahaan
International Journal of Marine Engineering Innovation and Research Vol 5, No 3 (2020)
Publisher : Institut Teknologi Sepuluh Nopember

The Damage Stability, better known as leaky ship stability, is a condition where the vessel has a leak in the ship's compartment so that the stability condition of the ship is disrupted. This study is a study of the effects caused by sloshing on the stability of the ship. The method used to calculate damage stability is the lost buoyancy method. This method assumes a condition where when the vessel has a leak, the vessel buoyancy will decrease. This happens because the empty space in the vessel will be filled with water, so it is no longer the part that contributes to the buoyancy so that the ship will increase and can result in sinkage. According to the calculation of SOLAS (Safety of Life at Sea) Consolidated Edition 2014 Chapter II-1 Part B-1. There are two indexes compared, namely index Required index R = 0.77172, which depends on the length of the lining and Attained subdivision index A = 0.83736. The pi factor shows a maximum of 5 leak zones that can be overcome by the ship to remain stable. By comparing the index value of A> R, it can be seen that this ship has fulfilled the SOLAS requirements.

CFD Based Analysis of Resistance and Pitch Motion of Novel Flat Plate Panel Hull Vessel Amiadji Amiadji; achmad baidowi; Irfan Syarief Arief; Fitricia Putri Ricinzky
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 19, No 1 (2022): February
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v19i1.43370

This paper provides analysis regarding a phenomenal hull shape called flat panel concept, the flat panel hull is an axe bow vessel at the front part and semi trimaran at the stern part. This concept is for a small vessel such as fishing vessels, patrol vessels and prototypes have been built. Resistance and motion is important part of a vessel design, this paper compares a flat plate vessel with 282.56 ton displacement with a conventional vessel with the same displacement and same speed. The resistance comparison was conducted using Computational Fluid Dynamic (CFD) on each ship with a speed range of 5-10 knots of operational speed. The resistance shows that the flat panel vessel generates higher resistance compared to the conventional vessel where the difference varies from 8.388% to 19.954% depending on the speed. It also found that the pitch motion (Ry) of flat panel vessel is positive that indicates the bow draft is lower during the simulation in calm water. The highest value of pitch is 1.13 degrees measured at the amidships or zero point or -0.3 m at the bow. Two While the relative velocity or flow analysis indicates that flow of the flat panel vessel has enormous turbulence flow around the stern hull and smoother flow pattern at the bow, this may cause the increase of resistance and bow diving in calm water phenomena. However since the most accurate test is based on model test in hydrodynamic laboratory, it is recommended to conduct the comparison experiment in hydrodynamic laboratory.

Flettner Rotor Modification through Adding Ridges and Fins with Results Comparison to Base Model Nowar Deeb; Achmad Baidowi; Adi Kurniawan
International Journal of Marine Engineering Innovation and Research Vol 8, No 2 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i2.16643

Oceans are the most crucial factor in maintaining global environmental equilibrium. Researchers are looking into the possibility of capturing wind power for shipping. Ship builders and owners provide several solutions based on the use of electrical power, low-polluting fuels, solar energy, and wind energy. The goal of this research is to learn more about using Flettner rotors as alternate sources of power and to create a new operational model for the rotor that could generate more power output from the currently available base model. Due to the sluggish market and glut of tonnage, the global shipping industry is now having difficulties. Only a few ships have wind-assisted technologies to help them save money on fuel. For the research, we created a base model in the 3D program from the available data about the commercially used Flettner rotor, then we modified a number of variations for the model and compared the results we reached from the CFD software to find an outcome that is better than the current output of the base model, and the results have shown improvement for the lower wind speeds.

Systematic Review of Solar and Wind Power Plants for 14-Meter Fishing Boats Nanang Setiyobudi; Agoes Santoso; Eddy Setyo Koenhardono; Achmad Baidowi; Dian Purnamasari; Teguh Muttaqie; Muryadin Muryadin; Fariz Maulana Noor; Ari Budi Setiawan; Ari Kuncoro; Zarochman Zarochman
International Journal of Marine Engineering Innovation and Research Vol 8, No 2 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i2.16703

The use of fossil fuels is becoming increasingly expensive, and the amount is limited. Utilizing wind and solar energy sources onboard fishing vessels during operation is one of the solutions to reduce operational costs. This article presents a study on applying solar photovoltaic (PV) and wind turbines for a 14-meter BSC (Blue Swimming Crab) fishing vessel in Rembang Regency, Indonesia. This study discusses the use of renewable energy sources that can be applied to meet onboard electricity needs and their economic impact. This analysis considers to operating system scenario for seven days catching the BSC in the Java Sea. The calculation results show that the solar PV and wind turbine energy that can be utilized as electrical energy are 22,960-Watt h. The required battery is 20 units at 100 Ah 12 Volts and an investment cost of USD 21,084. The advantage of applying this technology is an operational cost saving of 16%, which can increase fishermen’s income by 11%. The challenge of a hybrid or electric propulsion system is fantastic, using the serial configuration of the power topology, and the result of preliminary estimates of the investment value is approximately 173,277 USD.

Cavitation Prevention for Submarine Propeller with Empirical Method Prihandanu, Riyan Bagus; Baidowi, Achmad
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 20, No 3 (2023): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v20i3.52960

Submarines are a component that is taken into account in assessing the security of a country. Many countries have developed their own types of submarines according to technological developments in that country. To be able to move silently underwater, the most important requirement for submarine propellers is low noise generated by these propellers. So the first thing that must be avoided from the emergence of a noise on a submarine is the absence of cavitation when the propeller operates both on the surface and at depth. The cavitation value can be predicted based on the limits from the burril cavitation diagram. The diagram is obtained from cavitation experiments and recorded full-scale cavitation observations over many years. Simulation calculations will be varied by value of P/D, Ae/Ao, Number of blades (Z) and diameter (D). Other components such as advance velocity (Va) and rotation speed (n) of propeller are considered constant or ignored as in Keller's Formula. From the calculation, by adding the expanded area ratio and propeller diameter values can reduce cavitation in the propeller. While the opposite happens, when the propeller pitch value and the number of blades increase, the cavitation value will also increase. If submarine in dive condition the cavitation difficult to appears, because the pressure of the ship when diving conditions will be very high and the cavitation number will be very small.

ECONOMIC STUDY OF BLUE SWIMMING CRAB FISHING ACTIVITIES IN JAVA SEA USING ELECTRIC AND SAILING BOAT DESIGN Setiyobudi, Nanang; Santoso, Agoes; Purnamasari, Dian; Muttaqie, Teguh; Muryadin, Muryadin; Noor, Fariz; Setiawan, Ari; Wijaya Kusuma Rahadi, Cakra; Baidowi, Achmad; Rezvani, Rifki; Zarochman, Zarochman
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol. 15 No. 2 (2024): Marine Fisheries: Journal of Marine Fisheries Technology and Management
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmf.v15i2.54018

The United Nations has proclaimed the world's commitment to reducing greenhouse gas emissions in the Paris Agreement, and Indonesia has a net zero emissions target by 2060. One of the efforts to support this commitment is by applying environmentally friendly fishing vessel technology using sail and electric propulsion. However, to convince the application, it is necessary to consider several aspects, especially the economic aspect of business investment. This study aims to calculate the estimated cost of boatbuilding and fishing operations for 10 days in the Java Sea using the development of electric sailboat design. The payback period of a feasible investment is then calculated by comparing the revenue from Blue Swimming Crab (BSC) fishing activities. Based on the result, recognizing that with an investment value of nearly 400 thousand USD to purchase the boat, it is reasonable to set a minimum goal of capturing at least 1,2 Ton of crabs per trip, and a minimum of 20 trips annually, thus the payback period takes 10 years. Keywords: Blue swimming crab, Fishing vessel, Java Sea, Net zero emission, Payback period.

Legislation Committee as Law Center in the National Law Development Baidowi, Achmad
Syura: Journal of Law Vol. 1 No. 1 (2023): February
Publisher : Sekolah Tinggi Agama Islam (STAI) Darul Ulum Banyuanyar Pamekasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58223/syura.v1i1.25

The shift in the DPR legislative function after the amendment of the UUDNRI 1945, which was previously owned by the President then become the DPR function brought major changes. This change, plays an important role in the process of checks and balances and in enhancing the development of national law quality. However, this change is still not optimal. As can be seen from the fact that the legislative products produced by the DPR are not yet maximal, both quantitatively and qualitatively. Optimizing Baleg's position as a Law Center with the support of reliable supporting staff is one way to improve legislative performance. So far Baleg's role in carrying out its duties has not been optimal due to various interests which have hindered the drafting of the National Legislation Program and the deliberation of the Bill and the absence of a road map in monitoring and reviewing laws. Baleg's position as a Law Center must be strengthened to minimize the obstacles that arise so that the Prolegnas that have been set can be realized. Baleg needs to make arrangement so that the implementation of its duties can be optimal and ultimately able to improve the performance of the DPR in carrying out its powers as legislators. A road map in post legislative scrutiny needs to be made so it is clear that the implementation can be carried out in a directed and measurable manner.

Berperan Dalam Pembangunan SDM, Saatnya Insentif Guru Ngaji Bersumber Dari APBN Baidowi, Achmad
Syura: Journal of Law Vol. 2 No. 1 (2024): February
Publisher : Sekolah Tinggi Agama Islam (STAI) Darul Ulum Banyuanyar Pamekasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58223/syura.v2i1.219

Well-consolidated human resource development must be supported by an adequate, targeted and equitable budget so that there is an increase in quality in the national education system in our country. There are 3 (three) parties in the national education system, namely students, education personnel, and educators. As the name implies, students are pupils or students who will undergo education or the learning process. Meanwhile, education personnel are parties who dedicate themselves and are appointed with the aim of supporting the implementation of education. While educators are education personnel who have qualified as teachers, lecturers, tutors, instructors, or the like, who participate in organizing education. Quran teachers take part as educators for the non-formal sector who already have qualifications and have participated a lot in organizing education in Indonesia. This study uses a qualitative approach with the method used in this study is the normative research method. The author's analysis uses conceptual analysis. The results of this study The Koran teacher as an educator is to direct students towards maturity with a perfect human personality, and the Koran teacher as a leader is able to control themselves, students and the community related to social problems. Budget allocation from the APBN is something that should be an effort to pay attention, appreciate and improve the welfare of Koran teachers

Co-Authors Achmad Ishlahul Fanany Adi Kurniawan Agoes Santoso Agoes Santoso Ahmadi Munib Amiadji Amiadji Anson Novendra Pradana Ari Budi Setiawan Ari Kuncoro Ari Setiawan Brenda M. Samiadji DEWANTO Dian Purnamasari Dian Purnamasari Eddy Setyo Koenhardono, Eddy Setyo Eko Sulkhani Yulianto Ericson Posmanov Martua Silalahi Fariz Maulana Noor Fitricia Putri Ricinzky Fitricia Putri Rizki Ricinsi Hesty A Kurniawati, Hesty A Irfan Syarief Arief Irfan Syarief Arief Irfan Syarief Arief Irfan Syarif Arief Jamal, Nur lintang, lintang candra Mardisuin Siahaan Maria Ulfa Muhammad Badrus Zaman Muryadin Muryadin Muryadin, Muryadin Muttaqie, Teguh Nanang Setiyobudi Nanda Oktova, Aufal Noor, Fariz Nowar Deeb Prihandanu, Riyan Bagus Rezvani, Rifki riyan prayogo Setiyobudi, Nanang Sunardi, Sunardi Sutopo Purwono Fitri Teguh Muttaqie Tony Bambang Musriyadi Wasis D Aryawan, Wasis D Wijaya Kusuma Rahadi, Cakra Zarochman Zarochman Zarochman, Zarochman

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