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Marine Science and Technology Journal
Published by Universitas IVET
ISSN : 27150305     EISSN : 27461580     DOI : https://doi.org/10.31331/maristec
Core Subject : Engineering,
Engineering
The range of topics extends from research in naval architecture, marine engineering, and ocean engineering to marine-related research in the fields of environmental science and technology, oceanography, computational mechanics, and information technology. In addition to original, full-length refereed contributions presenting new research and developments in the field, the journal also publishes review papers authored by leading authorities. Presents new research in naval architecture, marine engineering, and ocean engineering Covers marine-related research in environmental science and technology, oceanography, computational mechanics, and information technology Publishes original research contributions and reviews authored by leading authorities
Arjuna Subject : Teknik (semua kategori) - Teknik Kelautan
Articles 6 Documents
 1 
Search results for , issue "Vol 6 No 1 (2025): Marine Science and Technology Journal" : 6 Documents clear
Perhitungan Konstruksi Bangunan Atas pada Modifikasi Barge 345 Feet Menjadi Accomodation Work Barge Widodo, Panut; Suyanto, Suyanto
Marine Science and Technology Journal Vol 6 No 1 (2025): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v2i1.3641

Abstract

The need for ship units can be met by building new ships, purchasing second ships that are still viable, chartering ships, and modification of existing ships. Decision considerations may include ship building time, level of urgency or budget. One of the decisions a ship owner can take considering budget, time and owned existing ship is by modifying the ship according to their needs, for example modification of a flat top barge (FTB) to an accommodation work barge (AWB). The need for plate material, especially when modifying FTB to AWB, requires construction calculations for the modified part. The modification made was to create accommodation space above the main deck. The accommodation space construction calculations are adjusted rules BKI 2022 about classification and construction, part I, volume II. From data of general arrangement and BKI rules, the results show that thickness of plate outer wall of superstructure and boat deck is 8 mm, thickness of room bulkhead plate, navigation deck and top deck is 6 mm, size of the internal construction in accommodation room/boat deck is frame/stiffener/deck beam profile L90+90 x 8 mm, web frame/web stiffener/strong beam profile L120+120 x 10 mm, deck girder profile T150+80 x 8 mm.
Analisa Perhitungan Tebal Pipa Kapal Tanker Berdaya Mesin 1500 BPH Pramono, Sri; Wibowo, Riyanto
Marine Science and Technology Journal Vol 6 No 1 (2025): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v2i1.3678

Abstract

Galangan kapal baja di tahun 2016 mengalami peningkatan produksi kapal yang sangat signifikan. Hal ini untuk mendukung program Tol Laut pemerintah yang ingin mempermudah pendistribusian logistik antar pulau. Dengan demikian maka produktifitas galangan kapal perlu ditingkatkan agar dapat menyelesaikan pembangunan kapal baru tepat waktu. Dalam pembangunan kapal bangunan baru terdapat 6 (enam) pokok kegiatan yaitu design, fabrication, assembly, erection, outfitting, and launching. Outfitting merupakan proses pemasangan komponen kapal, meliputi hull outfitting, piping and electrical installation, accomodation, machinery outfitting, dan sistem propulsi. Dimulainya fabrikasi sistem perpipaan setelah tahap penyambungan antar block/erection selesai. Setiap pembangunan kapal harus memiliki sistem perpipaan, di karenakan pipa merupakan jantung dari kapal. Sistem perpipaan adalah bagian utama suatu sistem yang menghubungkan titik dimana fluida disimpan ke titik pengeluaran semua pipa baik untuk memindahkan tenaga atau pemompaan harus dipertimbangkan secara teliti. Karena keamanan dari sebuah kapal salah satunya tergantung pada susunan perpipaan. Untuk mengetahui bahwasanya pipa itu berfungsi dengan baik terlebih dahulu kita harus melakukan pengujian pipa sebelum kapal beroperasi. Pengujian itu terdiri dari pengujian hydrotest pressure yang di lakukan setelah instalasi pipa terpasang dengan benar. Pengujian ini dilakukan sebelum kapal diluncurkan ke dalam air. Sedangkan pengujian function test yang di lakukan saat kapal sudah berada di air. Pengujian ini dilakukan agar kita tahu apakah pipa itu berfungsi dengan baik, serta untuk mengetahui terdapat kebocoran pipa maupun pada instalasi.
Model Tata Kelola Penangkapan Ikan Terukur di Zona Penangkapan Ikan Kota Semarang-Jawa Tengah Asmoro, Eddi Indro; Tugino, Tugino; Harini, Harini; Hariningrum, Rita
Marine Science and Technology Journal Vol 6 No 1 (2025): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v2i1.3682

Abstract

Penelitian ini merupakan penelitian asosiatif kausal bertujuan untuk mengetahui hubungan antara dua variabel atau lebih, dengan salah satu variabel (independen) yang mempengaruhi variabel yang lain (dependen). Setelah mendapatkan pemahaman dari pendekatan hubungan kausal studi literatur dan menentukan indikator-indikator variabelnya akan dibuat kerangka konsep modelnya berdasarkan hubungan kausal. Peran penting dalam model tata kelola penangkapan ikan terukur membutuhkan peran pertama adalah dari pemerintah, akademisi, dan masyarakat untuk meningkatkan kolaborasi dalam pengelolaan perikanan; dan peran kedua adalah pemerintah daerah untuk mendukung implementasi sistem penangkapan ikan terukur. Berdasarkan hasil penelitian ini hanya mampu menentukan hubungan kausal dalam bentuk indikasi pengelompokan pada tiga hal pokok dalam kerangka model. Penelitian ini bisa disimpulkan sebagai penelitian foundation. Ketiga hal pokok tersebut yang merupakan variabel eksogen adalah: 1). Kuota penangkapan yang menunjukkan ketahanan ekologi sekaligus mendukung ketahanan pangan 2). Nilai produksi kuota penangkapan yang menunjukkan ketahanan ekonomi, dan sedangkan variabel endogenya adalah 3). Nilai pendapatan dan kesejahteraan nelayan yang menunjukkan ketahanan sosial-ekonomi masyarakat.
Analisis Masuknya Air Pendingin kedalam Cylinder Main Engine di Kapal MT. Transko Bima Rodhi, Alex Bima; Darmana, Eka; Pujiyanto, Fajar
Marine Science and Technology Journal Vol 6 No 1 (2025): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v2i1.3684

Abstract

Ships are water transportation tools used in the sea, rivers, or lakes for various purposes such as transporting goods, passengers, and fishing. Ships generally use power from engines, such as diesel engines to drive the propellers that propel the ship in the water. The problem experienced by the author when carrying out sea practice for one year (July 2023 - July 2024), on the main engine of the MT. Transko Bima ship is the entry of coolant into the cylinder, which can have a negative impact on the performance of the main engine. Therefore, this study aims to analyze the causes of the entry of coolant into the main engine cylinder on the MT. Transko Bima ship. The research method used is a case study with a descriptive qualitative approach. Data were obtained through direct observation, interviews with engine crews, literature studies and documentation during sea practice on the MT. Transko Bima ship. The results of the study showed that damage to the exhaust valve seat was the main cause of the entry of coolant into the cylinder. This problem has an impact on the engine experiencing corrosion, water hammer, and can cause further damage if not handled immediately. Repair efforts include replacing damaged components and routine maintenance of the cooling system to prevent overheating. This research is expected to contribute to ship engine crews in handling similar problems and improving the reliability of ship operations.
Kendala Dalam Pembelajaran Berbicara Di Jurusan Teknik Kelistrikan Kapal Universitas Ivet Tahun Akademik 2023/2024 Wibowo, Rahmat Ari; Sulistyorini, Dwi
Marine Science and Technology Journal Vol 6 No 1 (2025): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v2i1.3700

Abstract

English as a foreign language instruction and learning in Indonesia. Speaking is one of the core abilities to be acquired in the process of teaching and learning English. Speaking serves as a crucial component of communication. Gaining proficiency in speaking English is essential for all students to be able to converse in the language. Speaking is a skill that both first and second language learners should focus on. The most crucial part of learning a second or foreign language is developing speaking abilities, and proficiency is determined by one's capacity to carry on a conversation in the target language (Nunan, 1995). The second problem is that learners complain that they cannot remember anything to say and they do not have any motivation to express themselves. This is supported by Rivers (1968) who thinks that learners often have nothing to say probably because their Lecturers had selected a topic that is not appropriate for them or they do have enough information about it. The method used in this research is descriptive quantitative. The data obtained from the test was analysed by Likert scale procedure indicated whether one strongly agree (SA), Agree (A), Undecided (U), Disagree (D), Strongly Disagree (SD) with each statement. The score was determine by summing the point of value of each statement. The technique of analyzed data in the research was used descriptive percentage. The technique was used asses variable of the research. The researcher classify their collect data from observation class and questionnaire, data collection from questionnaires is Likert Scale was used to assess and calculated data which obtain from questionnaires. Based on the findings and discussion, it could be concluded that there are some problems in speaking English by the fifth semester at Ship electrical engineering of Ivet University. The result of the study, there are some students’ problems in practicing speaking English. The problems students’ in practicing speaking English are inhibition, nothing to say, low or uneven participation and mother tongue used. It is because they do not master the three primary elements of speaking namely, vocabulary, grammar, and pronunciation
Analisis Terjadinya Kavitasi Pada Pompa Sentrifugal Di Kapal KM. Tanto Lancar Rafli, Aulia Abdul Rafli; Djajari, Djajari; Priyanto, Priyanto; Purnomo, Budi Purnomo
Marine Science and Technology Journal Vol 6 No 1 (2025): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v2i1.3745

Abstract

Dalam sebuah sistem operasi kapal, banyak terdapat alat pompa untuk dioperasikan agar sistem penggerak utama kapal dapat beroperasi dengan baik. Pompa banyak digunakan untuk menyalurkan sistem perairan dalam kapal mulai dari untuk keseimbangan kapal serta kebutuhan konsumen dalam kapal. Sistem kerja dari pompa adalah menyalurkan fluida dari satu titik ke titik lain. Salah satu pompa yang digunakan adalah pompa sentrifugal. Pompa ini memiliki sistem kerja menyalurkan fuida denga bantuan gaya sentrifugal. Dalam sistem kerja pompa sentrifugal, terdapat beberapa faktor penyebab adanya gangguan. Salah satu gangguan yang sering terjadi adalah kavitasi. Kavitasi adalah suatu gangguan dimana adanya pembentukan gelembung uap karena variasi tekanan. Penelitian ini akan membahas teakait faktor penyebab terjadinya kavitasi, dampak kavitasi, serta cara menghindari terjadinya kavitasi.

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