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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 9 Documents
 1 
Search results for , issue "Vol 2 No 2 (2021): Marine Science and Technology Journal" : 9 Documents clear
An Analysis Of Students Perception And Production Problems Of Pronouncing English Palato Alveolar Sounds Sulistyorini, Dwi; Wibowo, Rachmat Ari
Marine Science and Technology Journal Vol 2 No 2 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i2.1590

Abstract

This study is about students’ error in perceiving and producing English palato alveolar sounds. The aims of this study are to describe how well the students perceive and produce English palato alveolar sounds and to find out the most common problems/errors encountered by the students whether in the level perception or production. This study used mix-method design. There were thirty eighth grade students as the sample of this study taken by convenience sampling technique. The data of this study were gained from two kinds of test, namely perception test in the form of listening test and production test in the form of speaking test. The results of both listening and speaking test were the source of data for this study. This study revealed that the eighth grade students were good in perceiving English palato alveolar sounds with errors 36% and were fair in producing English palato alveolar sounds with errors 53%. Therefore, it can be concluded that the most common problems faced by the students were at the production level and there were also some factors influenced them in producing English palato alveolar sounds, namely the non-existence of English palato alveolar sounds, the influence of orthographic writing, the influence of distractor sounds and the interference of mother tongue. It is suggested that the students practice a lot in pronouncing English palato alveolar sounds and the teachers provide many learning strategies and improve their teaching quality.
Analisa Perhitungan Penambahan Konstruksi Sekat Dan Dasar Ganda SPOB 3500 DWT Berdasarkan Aturan BKI 2019 Widodo, Panut
Marine Science and Technology Journal Vol 2 No 2 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i2.1584

Abstract

Self propelled barge SPOB 3500 DWT carrying Crude Product Oil (CPO) in this study, was built in Singapore in 1984. After operating for a long time, this ship was then included in the Indonesian Classification (BKI), so that in terms of construction it must also follow the requirements of BKI 2019 regulations,. In order to find out the construction adjustments needed to be accepted by the class and also to prevent over-construction, it is necessary to calculate the additional construction based on the latest BKI rules. In this study, an analysis of the old construction drawing data was carried out and mathematical calculation of size of additional transverse bulkhead construction and pelate of double bottom based on rules BKI 2019 Volume. Based on data and regulations of BKI 2019, this ship must add 2 units of transverse bulkhead at cargo tank and change the bottom construction from a single bottom to a double bottom installed along the cargo tank. From the calculation results, it knew that the old bulkhead pelate thickness still meets BKI requirements, the additional transverse bulkhead pelate thickness is 8.0 mm, the double bottom height is 1010 mm and the inner bottom pelate thickness is 8.0 mm.
Perbandingan Radiasi Sinar UV Pada Pelaksanaan Praktik Pengelasan (SMAW) Di Fakultas Kemaritiman UNISVET Dengan Peralatan Sterilisasi Corona Virus 19 Kurniawan, Ratna Dwi; S, Rudy
Marine Science and Technology Journal Vol 2 No 2 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i2.1591

Abstract

Covid19 has changed the behavior of the world's people, until the whole world is affected, schools, offices, public places are closed, restrictions on activities, this condition forces scientists to be extra hard to create inventions to overcome these problems. Medicines to treat it have not yet been found, but several vaccines have been found, but whether the effectiveness of the vaccines can really overcome the pandemic, then efforts that can be done are to minimize the spread of the corona virus. Apart from medicine and vaccines, research is also being conducted on the equipment that can be used to kill viruses. Equipment with UV light has been widely offered and even sold freely, even though the use of UV can not be arbitrary because it can cause irritation. In welding that also emits harmful UV radiation, with a current of 150 -200A, Radiation ranges from 0.87-3.2 W / m2 far beyond the allowable limit of 0.001W / m2, while that of the steilization equipment ranges from 2.8 W / m2 By looking at this comparison, can the implementation of welding practices on campus be said to be safe? Because the UV emission from welding the value is like that used in sterilization equipment.
Analisa Pengaruh Sudut Kemiringan Panel Surya100 WP Terhadap Daya Listrik Hariningrum, Rita
Marine Science and Technology Journal Vol 2 No 2 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i2.1585

Abstract

Upaya Optimalisasi Kesiapan Alat – Alat Pemadam Kebakaran Dalam Menjaga Keselamatan di Atas Kapal Wilastari, Santhi; Wibowo, Syailendra
Marine Science and Technology Journal Vol 2 No 2 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i2.1586

Abstract

The objectives discussed in this paper are to answer the questions in the subject matter, namely to increase understanding of safety equipment, especially fire fighting equipment. So that it can optimize its performance. Increase the level of readiness of fire extinguishers so that whenever and whenever fire extinguishers have to be used they will be maximally used. OHS officers are people who work with the task of occupational health and safety as well as operating and maintaining fire extinguishers so that fires can be prevented. Where the duties and responsibilities must be carried out and accounted for properly according to orders from the leadership of the company. Fire extinguishers are one of the countermeasures and minimize the occurrence of fire hazards. So the role of fire extinguishers is very important, fire fighting is an action that must be taken to create a safe and efficient work environment. Skills include knowledge of fire extinguishers and the responsibilities that must be carried out. Therefore, it is very necessary to improve the skills of OHS officers, namely by increasing the material for the discussion of fire extinguishers, carrying out fire extinguishing exercises and maintaining and checking fire extinguishers.
Analisa Terhambatnya Proses Discharge Pada Cargo Pump Di Kapal MT. Karmila Darmana, Eka; Supriyadi, Agus
Marine Science and Technology Journal Vol 2 No 2 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i2.1587

Abstract

PT. Pertamina appointed the MT ship. Karmila becomes a bunker ship, which is useful for supplying MFO fuel to Pertamina's ships and Pertamina's charter ships operating in the Dumai port area. So that the cargo pump plays a very important role in the fuel supply process. Obstruction of the discharge process will result in a decrease in the performance of the cargo handling process which will hamper ship operational activities. The method used is a case study with a qualitative descriptive analysis approach. Data collection obtained by direct observation at MT. KARMILA which is a ship owned by PT. PERTAMINA and direct interviews with the ship's crew. In addition, data sources are also obtained from the instruction manual, SOPs on board and references from articles related to pumping rates. The results of this study state that the problems that occur when the cargo supply bunker discharge is caused by several factors such as difficulty in adjusting the pumping rate for the supply bunker according to pipe capacity, the temperature increase of the electro motor cargo pump (overheating), the high initial load so that the generator is unstable, damage to the connection hose to the supply bunker. These things cause problems when the cargo discharge process for supply bunkers. One solution to overcome these problems is to control the rotation of the electro motor cargo pump using an inverter so that the pumping rate can be controlled as needed so that excess load and pressure can be avoided.
Perhitungan Volume Bahan Bakar Kapal Perintis KM Sabuk Nusantara 71 Dengan Metode Simson I dan Autocad Langgeng, Diana; Saputra, Dimas Adi
Marine Science and Technology Journal Vol 2 No 2 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i2.1555

Abstract

Calculating the volume of the ship is irregular using the Simson method. The simson measurement is to first calculate the volume of a certain room that is irregular, then divide the room into several parts. Then the calculation results of the Simson I method, autocad are compared which is the closest to knowing the tank volume of the model. From the results of data analysis it can be determined that simson 184.068267 m3, autocad 176.183925 m3.
The Effectiveness Of Using “Nas Daily” Youtube Channel In Improving Speaking Skill Wibowo, Rahmat Ari; Sulistyorini, Dwi
Marine Science and Technology Journal Vol 2 No 2 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i2.1588

Abstract

The structures of spoken language are quite different from the written language, which they have time to plan, edit and correct what they produce. Our personality, ourselves image, our knowledge of the world and our ability to express our thoughts are reflected in our speaking performance. In Ivet University, where the research was taken place, I found problems of learning English speaking skill that come from students, teacher, strategy, and facility of learning. Youtube can be a learning resource and learning media that can meet the demands of the digital generation. Youtube can increase interest and support the learning styles of the digital generation. Youtube also offers learning experiences with new technologies that will be useful when they graduate. This research uses descriptive qualitative method as the method of the research. The analysis conducted to the first semester students of ship Machinery Department of Ivet University, The aim of this research was to know the effectiveness of using YouTube video in developing students' speaking skills. The assessment was in form of speeches in front of the classroom. There are 25 cadets for the 1st semester of 2020, all of whom are internet generations. The research lasted for 1 month which consisted of 2 meetings per week. In the Nas Daily Youtube Channel it is packaged attractively and in each video there are English subtitles that can be used by cadets to learn about the formation of English sentence structures, learn about pronunciation, intonation, grammar, etc. The results showed that videos on Youtube can be used as a learning medium, and the cadets enjoy learning with it.
Pemanfaatan Besi Scrap Sebagai Bahan Dasar Industri Peleburan Baja Suyanto, Suyanto; Wibowo, Riyanto; Pramono, Sri
Marine Science and Technology Journal Vol 2 No 2 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i2.1557

Abstract

Many steel industries use scrap material as their basic material, both in the machine industry and the metal industry. The reason for using scrap is because this material is easy to obtain, has a high comparative value, has a chemical composition that is still very possible for further processing, and can reduce problems related to metal waste. Scrap material has a non-uniform type and chemical composition. The mistake in determining the type and composition of the basic ingredients will risk producing products whose specifications are not as expected. For that, before scrap is processed, it must first be grouped according to its type, then it is necessary to know in advance the chemical composition of each type of scrap ferrous material. Calculation of material composition before smelting must be precise, referring to the chemical composition standard that becomes the reference. The production of scrap iron into concrete reinforcing steel at PT Abadi Jaya Manunggal shows that scrap iron can be recycled and processed to produce reinforcing steel for concrete by taking into account the correct scrap composition. The chemical composition test results of scrap iron smelting show a composition identical to that of grade 250 steel. The result of the calculation of carbon equivalent is 0.317%, lower than the required maximum limit of 0.6%.

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