cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota semarang,
Jawa tengah
INDONESIA
KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan
Published by Universitas Diponegoro
ISSN : 18298370     EISSN : 23019069     DOI : 10.14710/kapal.
Core Subject : Science,
Earth & Planetary Sciences
Jurnal ini merupakan Jurnal Ilmiah untuk mengembangkan ilmu dibidang Ilmu Pengetahuan & Teknologi Kelautan. Jurnal ini diterbitkan oleh Teknik Perkapalan Universitas Diponegoro 3 (tiga) kali dalam 1 tahun pada bulan Februari, Juni dan Oktober.
Arjuna Subject : -
Articles 408 Documents
 27   28   29   30   31 
Strength Analysis and Repair Strategy of Aged Steel Jetty Pile Riyanto, Raditya Danu; Syahroni, Nur; Mulyadi, Yeyes
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 1 (2021): February
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v18i1.34899

Abstract

Indonesia has 95.161 km coastal lines with a total of 17.504 islands. With this nature, Indonesia has 1.226 ports, with a total accumulated length of up to 92 km. However, not all these ports are in proper condition. For ports that have steel jetty piles, corrosion is one of the problems. This paper provides technical experience and methodology for analyzing the pier's corrosion conditions and evaluating existing corrosion's effect on its strength. The survey methodology and required data, including a survey of cathodic protection, visual conditions, and pile thickness, are discussed in this paper. The static strength analysis of the existing state structure was carried out. This article provides repair strategies, including repair methods and a study of the number of piles repaired. This methodology results in the recommendations for pile repair strategies and guidance on effective analytical methods in determining the number of repaired piles for aged steel jetty pile repair.
Determination of PV Power and Battery Capacity Size for a Leisure Solar Powered Boat at Kalimas River, Surabaya, Indonesia Nasirudin, Ahmad; Hasanudin, Hasanudin; Utama, Danu; Tahwoto, Lia Pundhi
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 17, No 3 (2020): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v17i3.31965

Abstract

As a green city, Surabaya had been developing a program of an environmentally friendly concept in almost all sectors. One of the developed sectors with this concept is the tourism area around the Kalimas river. Tour by riding a small passenger leisure boat is the most favorite recreational option. The leisure boat designs with environmentally friendly solar-powered concepts were developed, but regarding PV power and battery capacity determination, almost all designs are not optimal. This research is aimed to obtain the optimal PV power and battery capacity by calculating the number of PV panels and batteries with minimum cost. A Linear programming approach by Simplex method is applied in the optimization calculation. The results show that the number of the battery of the previous design can be reduced from 4 (four) units (20 kWh) becomes 3 (three) units (15 kWh) and the number of PV panels are still the same number with the previous one, i.e., 7 (seven) units (2,24 kW). The optimum system cost is around 264 million rupiahs, which means that the cost is reducing around 81 million rupiahs or 24%.
Back-Matter V. 17, No. 2 Iqbal, Muhammad
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 17, No 2 (2020): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Roll Motion Analysis on Unmanned Surface Vehicle with Remote Controlled Weapon Station Models to Combat Piracy in Surabaya West Access Channel Habibah, Natasya; Habib, Kevin Rizqul; Claresta, Gianiti; Siregar, Hadi Mulki
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 2 (2021): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v18i2.37020

Abstract

The dense shipping activity in the Surabaya West Access Channel (SWAC) is accompanied by a high rate of piracy which had 13 cases during 2013–2018. An Unmanned Surface Vehicle (USV) with Remote Controlled Weapon Station (RCWS) was created to overcome this piracy, increase work effectiveness, and reduce potential casualties. This study aims to create a design of USV equipped with RCWS complies with the requirements then analyzes the stability and seakeeping (roll motion) because it is one of the most determining factors of the stability and safety of the ship. The research method in this study is a simulation process based on system engineering theory starting from the formulation of requirements, design making, and then simulation. Five design models are created and simulated to analyze their stability and seakeeping performance. The design results are a monohull USV equipped with an RCWS with the main dimension of 1.7 m long, 0.9 m wide, and 1.04 m high. The stability simulations conclude that Model 4 is the most stable platform with the highest peak value of GZ for 0.112 m in angle degree of 108.2°. The seakeeping simulations show that at wave heading 45°, model 3 has the highest RAO with the peak value of 4.703 at the frequency of 0.4 rad/s. At wave heading 90°, model 5 has the highest RAO with the peak value of 0.095 at the frequency of 0.4 rad/s. At wave heading 135°, model 1 has the highest RAO of 0.012 at the frequency of 0.581 rad/s.
Back-Matter V. 18, No. 1 Iqbal, Muhammad
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 1 (2021): February
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Cover V. 17, No. 3 Iqbal, Muhammad
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 17, No 3 (2020): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Strength and Fatigue Life analysis of Sedan Car Ramp of The Ferry Ro-Ro 5000 GT Using Finite Element Method Alamsyah, Alamsyah; Nurcholik, Samsu Dlukha; Suardi, Suardi; Pawarah, M U; Jumalia, Jumalia
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 2 (2021): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v18i2.37518

Abstract

The Ferry Ro-Ro 5000GT has three levels of car deck that are connected by internal ramps. Two issues that have to be paid attention during the operation of the internal ramp there are the strength capacity and the design fatigue life of the internal ramp structure. The purpose of the research is to determine the strength and fatigue life of the internal ramp construction. The method used the Finite Element Method using a static load by load case of point load at top girder and between girders. Results of the research detected the maximum stress value is in the load case of the point load (three sedan car) at between of the girder is 52.143 MPa with the fatigue life is 44.47 years with the load cycle is 7300000 cycle while the minimum stress value detected at the load case of the point load (two sedan cars) at top girder is 34.199 MPa with the fatigue life is 195.92 years with the load cycle is 50000000 cycle. For the safety factor, ramp construction 6.08 ~ 10.38. The safety factor value above is still in safe condition because the value is SF > 1.
Front-Matter V. 17, No. 3 Iqbal, Muhammad
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 17, No 3 (2020): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Benchmark Study of FINETM/Marine CFD Code for the Calculation of Ship Resistance Firdhaus, Ahmad; Suastika, I Ketut; Kiryanto, Kiryanto; Samuel, Samuel
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 2 (2021): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v18i2.39727

Abstract

Benchmarking can be used to test CFD programs for selecting turbulence models, grid dependency studies, testing different numerical schemes and source codes, and testing different boundary conditions. CFD simulation in this study uses FINE™/Marine 7.2-1 software. The solver process at NUMECA uses the ISIS-CFD flow solver developed by EMN, which uses the incompressible unsteady Reynolds-average Navier stoke equation (RANSE). The solver is based on the finite volume method, and Turbulence models use SST k-ω models. The free surface flow around a model surface ship (DTMB 5415) advancing in calm water under steady conditions is numerically simulated. The geometry of the DTMB 5415 ship hull was provided in igs file format. The 1996 International Towing Tank Conference has recommended the DTMB 5415 combatant as a benchmark case for CFD computations of ship resistance and propulsion. The results compare well with the available experimental data. They allow an understanding of the differences that can be expected from vicious and potential flow methods due to their different mathematical formulations. It is demonstrated that the complementary application of these methods allows good predictions of the total ship resistance.
Back-Matter V. 17, No. 3 Iqbal, Muhammad
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 17, No 3 (2020): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Page 29 of 41 | Total Record : 408

 27   28   29   30   31 

Filter by Year

2006 2026


Reset
Filter By Issues
All Issue Vol 23, No 1 (2026): Article in Press Vol 22, No 3 (2025): October Vol 22, No 2 (2025): Article in Progress (Accepted Papers) Vol 22, No 2 (2025): June Vol 22, No 1 (2025): February Vol 21, No 3 (2024): October Vol 21, No 2 (2024): June Vol 21, No 1 (2024): February Vol 20, No 3 (2023): October Vol 20, No 2 (2023): June Vol 20, No 1 (2023): February Vol 19, No 3 (2022): October Vol 19, No 2 (2022): June Vol 19, No 1 (2022): February Vol 18, No 3 (2021): October Vol 18, No 2 (2021): June Vol 18, No 1 (2021): February Vol 17, No 3 (2020): October Vol 17, No 2 (2020): June Vol 17, No 1 (2020): February Vol 16, No 3 (2019): Oktober Vol 16, No 2 (2019): Juni Vol 16, No 1 (2019): Februari Vol 15, No 3 (2018): Oktober Vol 15, No 2 (2018): Juni Vol 15, No 1 (2018): Februari Vol 14, No 3 (2017): Oktober Vol 14, No 2 (2017): Juni Vol 14, No 1 (2017): Februari Vol 13, No 3 (2016): Oktober Vol 13, No 2 (2016): Juni Vol 13, No 1 (2016): Februari Vol 12, No 3 (2015): Oktober Vol 12, No 2 (2015): Juni Vol 12, No 1 (2015): Februari Vol 11, No 3 (2014): Oktober Vol 11, No 2 (2014): Juni Vol 11, No 1 (2014): Februari Vol 10, No 3 (2013): Oktober Vol 10, No 2 (2013): Juni Vol 10, No 1 (2013): Februari Vol 9, No 3 (2012): Oktober Vol 9, No 2 (2012): Juni Vol 9, No 1 (2012): Februari Vol 8, No 3 (2011): Oktober Vol 7, No 3 (2010): Oktober Vol 7, No 2 (2010): Juni Vol 7, No 1 (2010): Februari Vol 6, No 2 (2009): Juni Vol 5, No 3 (2008): Oktober Vol 5, No 2 (2008): Juni Vol 5, No 1 (2008): Februari Vol 4, No 1 (2007): Februari Vol 3, No 3 (2006): Oktober More Issue