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Studi Penyebab Keterlambatan Proyek Reparasi AHTS 65,5 M Lisa Novianty; Naufal Abdurrahman Prasetyo; Sapto Wiratno Satoto; Nurman Pamungkas; Hendra Saputra
ABEC Indonesia Vol. 10 (2022): 10th Applied Business and Engineering Conference
Publisher : Politeknik Caltex Riau

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Abstract

Ship repair involves repairing ship parts that are damaged and do not comply with class eligibilityrequirements. The completion of ship repair projects in shipyards often faces obstacles that cause delays in thecompletion of the project. The purpose of this research is to identify the factors causing delay in the repair ofAHTS 65.5 meters ship using the FTA method. It is expected that if the cause of the delay in the ship repairprocess is known, it will be used as a benchmark for predicting delays in future repairs. This research uses FaultTree Analysis (FTA) technique, which is an analytical method for identifying failures in a system. There are twotop events based on the FTA analysis, namely piping work with 13 basic events and engine room work with 14basic events. There is one basic event with a high probability value in piping work, namely the purchase ofimported materials. While the engine room work produces one basic event with a high probability value, namelythe purchase of imported materials. The purchase of imported materials are the predominant causes of delays inship repair projects, so mitigation measures should be taken to prevent future delays.
Estimasi Durasi Serta Pekerjaan Kritis Pada Pembangunan Block 1 Kapal ASD Tug 35 M Oktaviani Kendri; Naufal Abdurrahman Prasetyo; Hendra Saputra; Mega Gemala; Mufti Fathonah Muvariz
ABEC Indonesia Vol. 10 (2022): 10th Applied Business and Engineering Conference
Publisher : Politeknik Caltex Riau

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Abstract

A schedule is crucial to the success of a project so that it is completed within the specifiedtimeframe. Construction of a block on a tugboat is one of the projects used as a case study. The aim of timeestimation is to determine the length of time required to complete a block with the stages of work involved. Inorder to ensure the work process runs on a schedule, a time estimation is done before the work is performed.This data is processed via a computer program. Microsoft Project is a familiar application used in projectmanagement or to assist in the processing of a project. The purpose of this study is to estimate the constructiontime of Block 1 and the work in the critical path on the 35-meter ASD tug ship. In this study, researchersobserve and participate in the construction of a ship block using the observation method. The results obtainedfrom this study are the estimated construction time of one ship block which is built in stages from marking,cutting, fitting, quality assurance, welding and grinding, to the final inspection by the Quality Controldepartment.
Uji Kebisingan dan Getaran Mesin Sesuai Regulasi Guna Kenyamanan Kru Kapal Ary Akbary Musati, Ary Akbary; Prasetyo, Naufal Abdurrahman; Antartika, Meida Perwira
Marine Science and Technology Journal Vol 5 No 2 (2024): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i2.3272

Abstract

UNoise and vibration tests on ships are important things to pay attention to on ships for crew comfort. If these two things are not paid attention to, it can have an impact on the safety and health of the ship's crew and the construction of the ship itself. This test also aims to determine the human response to vibrations on the ship. This noise and vibration test is carried out during the sea trial process, which is carried out by the classification party. Test case study using TB objects. Marina 2229 which carries out the repair process at the shipyard located in Batam. The purpose of this test is to determine the suitability of the noise test results according to SOLAS 1974 Chapter II-1 part-A and vibration according to ISO 6954: 2000. The test is carried out using qualitative methods, where the results of this test are in the form of numbers, as well as direct observations in the field. The results obtained in all sections are a value interval of 74.1 - 107.1 dB. The noise value does not exceed the permitted SOLAS standard, namely <140 dB. Meanwhile, the vibration test obtained a value range of 0.4 - 3.4. All values obtained still meet ISO standards.
Pengaruh Variasi Pengasahan Batu Gerinda Datar Terhadap Kekasaran Permukaan Material Baja ST 37 Galih, Baginda; Stefani, Windy; Prasetyo, Naufal Abdurrahman
Marine Science and Technology Journal Vol 5 No 1 (2024): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i1.3106

Abstract

Penelitian ini bertujuan untuk mengetahui kekasaran permukaan material baja dengan jenis ST 37 akibat variasi proses pengasahan batu gerinda. Sebagai proses finishing pada produk manufaktur, maka proses menggerinda datar perlu diketahui parameter asahan batu yang tepat. Penggunaan ST 37 sendiri menjadi pertimbangan karena kebutuhan material benda kerja untuk pendidikan di laboratorium manufaktur. Metode penelitian pendekatan eksperimen pada 3 spesimen dengan 3 variasi parameter pengasahan batu gerinda. Pengambilan data enggunakan konsep duplo untuk memperoleh data lebih dari satu. Setiap data sampel mempunyai 6 pengukuran. Hasil yang diperoleh yaitu, variasi 1 mendapat nilai kekasaran permukaan N6 dengan rata-rata kekasaran 0,839 ?m.Variasi 2 memperoleh nilai kekasaran permukaan N6 dengan nilai rata-rata kekasaran 0,650 ?m. Variasi 3 didapatkan nilai kekasaran permukaan N8 dengan nilai rata-rata 2,685 ?m. Sehingga, dapat disimpulkan bahwa pengasahan batu gerinda berpengaruh terhadap perubahan nilai kekasaran permukaan, baik variasi 1 maupun 2.
PEMBUATAN ALCUTA FOOT OPERATED (AFO) UNTUK MENDUKUNG TERLAKSANYA PROKES COVID19 DI BATAM Wiratno Satoto, Sapto; Sagoro, Gawan; Fajrin, Aulia; Wibowo, Ari; Abyad, Muliawan Nur; Saputra, Randy; Aryswan, Adhe; Kamsyah, Domi; Prasetyo, Naufal Abdurrahman; Putra, Lalu Giat Juangsa; Santoso, Budi
Abdi Masya Vol 4 No 1
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/abma.v4i1.241

Abstract

Pandemi menjadi bagian dari sejarah yang terjadi di negara Indonesia. Salah satu pademi yang pernah terjadi adalah penyebaran covid19 yang terjadi pada tahun 2019 sampai dengan 2022. Awalnya penyebaran virus hanya ada di titik tertentu, namun karena beberapa hal, penyebarannya bertambah. Penyebaran Covid19 semakin meluas dan menambah  panjang daftar pasien yang harus melaksanakan isolasi mandiri maupun perawatan di rumah sakit. Ketersediaan alat dan pembiasaan masyarakat dalam penerapan prokes perlu ditingkatkan guna meminimalisir penyebaran. Mencuci tangan merupakan salah satu prokes yang harus dilakukan, dimana Politeknik Negeri Batam ikut berpartisipasi dalam bentuk pembuatan Alat cuci tangan Foot Operated (AFO). Alat ini merupakan modifikasi dari alat cuci tangan konvensional dengan perbedaan kontrol pengeluaran sabun dan aliran air yang berasal dari injakan kaki pengguna . Dari hasil pembuatan, alat dengan dimensi 1140x660x1670mm dapat bekerja sesuai dengan desain yang direncanakan dan alat tersebut dapat digunakan oleh masyarakat sekitar. Dengan alat ini diharapkan dapat membantu mengurangi penyebaran covid19 sehingga pandemi yang terjadi hampir di antero negeri dapat teratasi dari langkah dan perbuatan kecil yang kami lakukan ini.
Omni-directional Movement on the MRT PURVI Ship Robot Wijaya, Ryan Satria; Kaputra, Aldi; Prasetyo, Naufal Abdurrahman; Soebhakti, Hendawan; Prayoga, Senanjung; Wibisana, Anugerah; Fatekha, Rifqi Amalya; Jamzuri, Eko Rudiawan; Nugroho, Mochamad Ari Bagus
Journal of Applied Electrical Engineering Vol 7 No 2 (2023): JAEE, December 2023
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jaee.v7i2.6475

Abstract

Ship transportation is the primary mode of trade and transportation at sea in the maritime industry. Initially, humans employed ships as a method of pursuing and capturing fish or animals in aquatic environments. As the ship era progresses, it actively engages in all aspects pertaining to ships. Presently, the ship is propelled by its engine, which is a significant improvement over its initial reliance on wood or oars. In addition to engines, propellers are employed to transform the rotational motion of the engine into propulsive force in the marine environment. Propellers are also present on aircraft, serving the same purpose but positioned at various locations in the air. A thruster is a hybrid device that combines an engine and a propeller. This sort of thruster is specifically designed for use on tiny boats or prototypes, for the purpose of simulating, exhibiting, or participating in contests. ESC is a component that facilitates the alteration of the input value to the intended velocity. In addition to their primary function of fulfilling food requirements, ships are presently employed in diverse capacities, including military vessels, tourist vessels, submarines, passenger ships, and more.
Uji Performa Model Batam Marine Ambulance Sebagai Armada Pendukung Medis dan Logistik Naufal Abdurrahman Prasetyo; Rahman Hakim; Sapto Wiratno Satoto; Muliawan Nur Abiyad; Yogantara
Infotekmesin Vol 14 No 2 (2023): Infotekmesin: Juli, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i2.1922

Abstract

This study aims to test the performance of the Batam Marine Ambulance model as a medical and logistics support fleet using the comparison ship method. A series of stability and motion analysis processes were carried out, then the results were assessed to determine the best design among the proposed design options. Performance tests used three ship models (Model I, Model II, and Model III). It is known that in the stability test, the tilt angle of model III is 33.63° and the maximum GZ value is 4.673 cm. Then, in the resistance test, Model I has a lower resistance of 87.29 N and the required power is 1496.93 W compared to the other proposed models. In the seakeeping test, Model III was found to be more stable or less affected on all surface conditions because the RAO value was relatively lower, namely 90o in terms of heaving, rolling, and pitching at 135o and 180o then had lower additional resistance. The Model III design has good ship stability, drag, and seakeeping characteristics.
Studi Simulasi Statis Struktur Desain Cradle Penopang Kokpit BAC 111 Stefani, Windy; Firmansyah, Adi Ridho; Prasetyo, Naufal Abdurrahman; Leksonowati, Nur Fitria Pujo
Jurnal Teknologi dan Riset Terapan (JATRA) Vol. 6 No. 1 (2024): Jurnal Teknologi dan Riset Terapan (JATRA) - June 2024
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v6i1.7589

Abstract

Cradle, a lifting device used to move the Cockpit head and other aircraft parts. The aim of this research is to obtain maximum data on the cradle structure through static simulation using SolidWorks 2020 software. The research was carried out by simulation using SolidWorks 2020 software with analysis of stress, strain and safety factor calculations for the cradle structure in supporting a static load of 1400 kg. The cradle design process was made using SolidWorks software, with the cradle size being 338 cm long, 145 cm wide at the top and 297 cm at the bottom, and using ASTM A36 type channel iron material with dimensions of 150 mm x 75 mm x 6.5 mm with loading. static of 1400 kg. The simulation results show that the maximum pressure value applied to the cradle with ASTM A36 steel material is 50.206 Mpa, below the yield strength value of 250 Mpa. The maximum displacement recorded was 1,169 mm, indicating that the deformation that occurred in the cradle structure was very minimal. With a maximum cradle capacity weighing 6.97 tons and a maximum wheel load capacity of 2.7 tons
STUDI DESAIN RENCANA UMUM KAPAL PENGANGKUT SAMPAH SEBAGAI INISIASI PEMBUATAN DESAIN KAPAL SEJENIS DI BATAM, KEPULAUAN RIAU Satoto, Sapto Wiratno; Natanael Tampubolon, Franssius; Juliarni; Yusri Aksyaputra, Muhammad; Irdia Raihan, Haura; Louisa Riaunal Sitompul, Dharma; Syahputra Purba, Adi; Abdurrahman Prasetyo, Naufal; Rindo, Good
Jurnal Teknologi dan Riset Terapan (JATRA) Vol. 7 No. 1 (2025): Jurnal Teknologi dan Riset Terapan (JATRA) - June 2025
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v7i1.9282

Abstract

Sungai yang melewati area pemukiman memiliki potensi yang berhubungan dengan kesehatan utamanya terkait dengan pengelolaan dan penanganan sampah. Perlu studi mengenai alat yang mampu menanggulangi potensi kerusakan lingkungan akibat penanganan sampah yang kurang memadai. Kota Batam yang beranjak menuju kota metropolis, kota pariwisata, kota budaya dimana di Batam terdapat beberapa sungai yang mengalir ke muara. Perlu sebuah desain alat yang berkaitan dengan sungai, khususnya kapal untuk mengurangi risiko sampah yang mengotori lingkungan. Penelitian atau studi awal dilakukan mengenai desain kapal yang sesuai dengan area Batam yang merujuk pada sumber-sumber desain kapal yang sudah ada. Hasil yang diperoleh adalah desain kapal pengangkut sampah telah dikembangkan di berbagai daerah dengan variasi model, di mana komponen utama mencakup jumlah lambung, sistem conveyor, alat gerak, dan sumber energinya. Validasi kuesioner menunjukkan bahwa masyarakat lebih memilih desain monohull dengan sistem conveyor yang lebih ringkas. Ke depan, perlu dilakukan pengembangan desain yang sesuai dengan parameter data yang telah dikumpulkan serta mengintegrasikan teknologi ramah lingkungan dan pengurangan emisi karbon.
Uji Performa Model Batam Marine Ambulance Sebagai Armada Pendukung Medis dan Logistik Prasetyo, Naufal Abdurrahman; Hakim, Rahman; Wiratno Satoto, Sapto; Nur Abiyad, Muliawan; Yogantara
Infotekmesin Vol 14 No 2 (2023): Infotekmesin: Juli, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i2.1922

Abstract

This study aims to test the performance of the Batam Marine Ambulance model as a medical and logistics support fleet using the comparison ship method. A series of stability and motion analysis processes were carried out, then the results were assessed to determine the best design among the proposed design options. Performance tests used three ship models (Model I, Model II, and Model III). It is known that in the stability test, the tilt angle of model III is 33.63° and the maximum GZ value is 4.673 cm. Then, in the resistance test, Model I has a lower resistance of 87.29 N and the required power is 1496.93 W compared to the other proposed models. In the seakeeping test, Model III was found to be more stable or less affected on all surface conditions because the RAO value was relatively lower, namely 90o in terms of heaving, rolling, and pitching at 135o and 180o then had lower additional resistance. The Model III design has good ship stability, drag, and seakeeping characteristics.