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Contact Name
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Contact Email
maristec@ivet.ac.id
Phone
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Journal Mail Official
maristec@ivet.ac.id
Editorial Address
Jl. Pawiyatan Luhur I, Kec.Gajahmungkur, Kota Semarang, Jawa Tengah
Location
Kota semarang,
Jawa tengah
INDONESIA
Marine Science and Technology Journal
Published by Universitas IVET
ISSN : 27150305     EISSN : 27461580     DOI : https://doi.org/10.31331/maristec
Core Subject : 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
Articles 5 Documents
Search results for , issue "Vol 2 No 1 (2021): Marine Science and Technology Journal" : 5 Documents clear
Experimental Pengukuran Volume Tanki Bahan Bakar Di Kapal Dengan Metode Simson I Dan Simson II Ratna Dwi Kurniawan; Budi P
Marine Science and Technology Journal Vol 2 No 1 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v2i1.1772

Abstract

A ship is a floating Structure that moves and is used in water ttransportation, to good manouvering, and to get a certain speed with propulsion efficiency, ship hull is commonly streamlined and designed so that obstacles or frictional forces with water are small, streamline forms in general the shape follows the flow of fluid or water so that the shape of the hull is curved. With a curved shape, the shape of the room inside also follows the hull of the ship, as well as the shape of the fuel tank, lubricant tank , fresh water tanks, liquid cargoes are also curved / curved or not square, tubes that are easy to determine volume. This volume calculation needs to be done carefully because it involves the need for fuel, fresh water, lubricants that will be needed during the trip in order to ensure that the needs are fulfilled until the destination. There are several methods for determining the area and volume of a curved plane, such as trapezium, simson etc. In carrying out measurements, students often have difficulty in understanding the method of measuring the area and volume of curved spaces on the ship, so it is necessary to make a real model, From the experimental results, it is known that for Samson's rule 1 there is a volume difference of almost 8%, for Samson II's rule it is 6%.
Pengaruh Penyumbatan Kerak Pada Sistem Injeksi Bahan Bakar Terhadap Daya Motor Induk Kapal Riyanto Wibowo
Marine Science and Technology Journal Vol 2 No 1 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v2i1.1781

Abstract

Cases of decreased mains motor power often occur on ships, especially ships that are old. However, it is rarely thought that this is caused simply because the carbon crust that clogs the fuel injection system in this case is the nozzle. Blockage of the nozzle crust can be fatal in reducing the power of a ship's motor. Like what happened to the motor of the Kirana II ship, the power of the motor has decreased. As a result, the actual 0.5 mm nozzle hole has been reduced for each nozzle; Nozzle1 0.32mm, nozzle2 0.34mm, nozzle3 0.36mm, nozzle4 0.38mm, nozzle5 0.30mm, nozzle6 0.40mm, nozzle7 0.28mm, nozzle8 0.34mm, so that the motor power has decreased from the previous 4400 HP to 3033.7 HP, this means the motor has a power loss of 1366.3 HP. The shrinkage of the nozzle hole is due to dirt in the form of combustion crust.
Penentuan Kebutuhan Pompa Air Bersih Fakultas Kemaritiman UNISVET Suyanto Suyanto
Marine Science and Technology Journal Vol 2 No 1 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v2i1.1783

Abstract

Determining the need for clean water needs to be planned properly. In determining the need for clean water, it is necessary to estimate the number of occupants or building users on average every day. On this basis, it is necessary to calculate the average daily water requirement. The determination of the size of the pipes and water pumps also needs to be taken into account based on the consideration of the initial information on the need for water supply. The piping installation and the determination of the pump supplying clean water in the Faculty of Maritime Affairs have not been based on the calculation of the need for clean water at the Faculty of Maritime Affairs. For this reason, this article will be presented calculation of the need for clean water in the Maritime Faculty building, and the specifications of the pump that will need to be used. With the calculation and analysis of the existing data, it is obtained that the average clean water requirement is 3.36 m3/hour in peak conditions of 6.72 m3/hour. The pipe used is PVC with a diameter of 1.5 inches. The pump used is 750Watt of electricity, 6m of suction power and 12m of thrust, and a capacity of 240 lt/min.
Kajian Kekuatan Struktur Pondasi Mesin Induk Harbour Tug Boat Kintan Muthia Yasmine Emily; Priyambodo Nur Ardi Nugroho; Boedi Herijono
Marine Science and Technology Journal Vol 2 No 1 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v2i1.1769

Abstract

The main engine has its own weight, and vibration also occurs so the heavier the load that the foundation holds. The foundation has an essential role as a retainer or support for the load, so it must be stronger to withstand the dynamic vibrations of the main engine. The installation of the foundation is made in such a way that the alignment of the engine shaft axis with the propeller shaft is guaranteed. The problem to be solved is how much load is received, whether the stress results still meet the class requirements, and the estimated age of the foundation. Using the calculation of applied mechanics, the load that will be received on the foundation and the main engine foundation construction planning can be known. To find out the results of the construction planning using the Finite Element Method. The analyzed structure is divided into smaller and simpler elements in a finite number by giving the value of the simulated structure boundary conditions. The analysis results show that the maximum stress value obtained is 267.1 MPa, while the allowable stress value is 300 N/mm2. So that the foundation can be declared to have met the requirements and is safe. For fatigue life analysis, the foundation age is 34,422 years, where the age has met the requirements
Studi Komparasi Konduktivitas Konduktor Tembaga Bentuk Serabut Dan Pejal Dengan Media Air Tawar (H2O) Rita Hariningrum; Sukarno Budi Utomo
Marine Science and Technology Journal Vol 2 No 1 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v2i1.1780

Abstract

Choosing a good conductor is still a problem. This is due to many factors including the cost and time required as well as expensive facilities but so far to determine the quality of materials accurately and effectively in a simple way has not been carried out except through complex laboratory tests such as through photo electrons and mechanical tests of materials which are expensive. . It is possible by the principle of heat dissipation in the conductor which as an alternative to the new test method is estimated to be low cost. Tests with the heat dissipation method on the conductor can be seen macroscopically that the conductivity is very influential in the conductor because it involves the speed of electrons contained in the conductor, if the conductor has a small resistance then the conductor has a high conductivity speed or in other words that the conductor has a high resistance. Small is a good conductor material used as a conductor.

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