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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Jurnal Teknik ITS IPTEK Journal of Proceedings Series IJOCE (International Journal of Offshore and Coastal Engineering) International Journal of Marine Engineering Innovation and Research Sewagati
Ardi Nugroho Yulianto
Institut Teknologi Sepuluh Nopember
Arts Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Reduction Of Outrigger Wide To Maximize Fishing Boat Landing Area Capacity In Prigi Fishing Port Sunardi; Muhammad Makki Amirruddinsyah; Eko Sulkhani; Ardi Nugroho Yulianto
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 3 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i3.4900

Abstract

Jukung fishing boats, prevalent in Prigi, face challenges due to their wide design (approximately 5 meters on both sides). This excessive width often necessitates berthing further from the coast. To address this issue, this study investigates the feasibility of reducing outrigger width to increase berthing capacity at PPN Prigi while ensuring vessel stability. Through a systematic analysis of various outrigger widths (1.5, 1.25, 1, and 0.75 meters), the study determined that a reduction to 1 meter maintains vessel stability as per HSC 2000 Annex 7 and Annex 749 (18) Ch3 design criteria. A 1-meter reduction in outrigger length can increase berthing efficiency by 66% for a standard 15-meter berth with 30-40 cm ship spacing. Consequently, the east dock of PPN Prigi can accommodate an additional 94 jukung vessels, raising the total capacity from 142 to 236. This research provides valuable insights for optimizing port infrastructure and enhancing the operational efficiency of the fishing community in Prigi.
Equivalent Single Layer Approach for Buckling Analysis of Stiffened Panel Under Bi-Axial Compression and Lateral Pressure Teguh Putranto; Ardi Nugroho Yulianto; Dedi Budi Purwanto; Dony Setyawan
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 3 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.5118

Abstract

Ship structure composed of stiffened plates is subjected to a variety of loading conditions during service, which can lead to buckling. As a result of panel buckling, the overall strength of the ship hull girder is reduced, which is what determines the ultimate strength of the hull girder. The ultimate strength analysis can be accomplished with finite element (FE) simulation, but detailed modeling can be time-consuming. Due to these reasons, it is more advantageous and costeffective to replace the three-dimensional (3D) stiffened panel model with a two-dimensional (2D) equivalent single layer (ESL) plate. This shift from 3D to 2D is premised on the accuracy of ESL in representing the various buckling modes of stiffened panels, which are determined by panel topology and boundary conditions. Therefore, an equivalent single layer plate (ESL) that represents a stiffened panel is evaluated in different buckling modes. Considering that ESL is asymmetric in nature, any modification of the stiffened panel's geometry has a significant effect on the buckling modes. In this paper, we are concerned with two modes of buckling: (i) local buckling within the stiffeners of the plate and web, and (ii) local lateraltorsional buckling within the stiffeners. According to the results, ESL is capable of accurately predicting the effect of local buckling in combination of biaxial compression and lateral pressure.
Survival Stability of RoPax Reviewed In Terms of The Water on Deck (WoD) Hasanudin; Ardi Nugroho Yulianto; Achmad Zubaydi; Wasis Dwi Aryawan
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 3 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.5176

Abstract

RoPax vessels are widely used worldwide but contribute to numerous fatalities. Accidents result from human factors, vessel damage, management, and natural causes. Vessel stability is a significant concern, with WoD leading to increased load and rising KG, potentially causing capsizing. This study examines a RoPax OCD UFP that experienced a WoD-related accident in Indonesian waters. Modifications considered are standard freeing ports, becoming RoPax OCD SFP, and applying side casings, or RoPax OCD WS assessed the Stockholm Agreement. Fluid simulation and stability failure criteria were employed at varying wave heights. The largest RAO on the variation of heading angle is changed into stability criteria, resulting in realistic outcomes that have not been seen in earlier research. The highest RAO roll occurs at a heading encounter angle of 60 degrees with a value of 2.192362 degrees/m. Results show survival for RoPax UFP, RoPax SFP, and RoPax WS in the 0-1 m wave height range, with only RoPax UFP capsizing at 2-3 m. RoPax WS has an extended stability arm but decreases stability at high wave heights. RoPax SFP is unaffected by WoD but may still face capsizing depending on the pure stability arm GZ factor. Modifying RoPax UFP to RoPax SFP or RoPax WS can improve survival intact stability.
Optimization of Inner Bilge Design to Enhance Cargo Tank Capacity in Tankers Yulianto, Ardi Nugroho; Winarko, Raybonda Reinaldi; Pasaribu, Sheely Leony Artha; Ahmad, Roisul Fadli; Adietya, Berlian Arswendo; Hasanudin, Hasanudin
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 23, No 1 (2026): February
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v23i1.82683

Abstract

The world of shipping industry keeps evolving to develop the most efficient ship designs, including tanker ship designs. According to MARPOL Annex 1 Regulation 19, oil tankers over 600 deadweight and built after 6 July 1996 must have wing tank and double bottom structures, which significantly reduce the cargo hold volume. Therefore, the objective of this research is to optimize the cargo hold volume by converting the conventional sloped hopper into a rounded inner bilge configuration. The optimization problem is formulated with the cargo oil tank volume as the objective function to be maximized. The design variables include the inner bilge radius and the positions of two cargo landing points at each knuckle along the cargo oil tank, defined in transverse and vertical coordinates. The constraints consist of regulatory and design requirements, including clearance, stability, freeboard, and longitudinal strength. Grid search method is employed to systematically evaluate all possible combinations of design variables, ensuring identification of the global optimum. The optimisation process is automated using Visual Basic for Applications (VBA) integrated with ship modelling software. The research resulted in a new design that increased the cargo oil tank volume by 0.960%. A sister ship with the same payload could be built with an optimized cargo oil tank design configuration by reducing the length of the cargo oil tanks and the ship itself. However, this improvement comes with a trade-off in terms of practical applicability during the shipbuilding process.
Development of a CAD-Based Subprogram for Bill of Materials Generation in Midship Section Area of Cargo Oil Tank Roisul Fadli Ahmad; Berlian Arswendo Adietya; Muhammad Luqman Hakim; Ari Santoso; Triyanda Gunawan; Hasanudin Hasanudin; Muhammad Hilmy Alfaruqi; Ardi Nugroho Yulianto
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 23, No 2 (2026): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v23i2.84393

Abstract

One of the challenges in shipbuilding is managing the Bill of Materials (BOM), caused by the existence of separate BOM versions for the design, production, and maintenance stages. In addition, most BOM preparation still involves manual processes. This results in additional work in the form of BOM transformation and repeated verification, as the multiple manually created BOM versions are highly prone to data inconsistencies and duplication. This study aims to simplify BOM preparation by developing a CAD-integrated add-on program capable of automatically generating BOM from ship section design. The proposed add-on program is expected to provide a solution for facilitating BOM data transfer between shipyard divisions, thereby reducing the risk of data inconsistencies and speeding up decision-making in ship construction. The research method includes collecting material data (ship profiles and plates), creating profile and plate model templates, designing the add-on program, and developing a user guide for the add-on. The add-on program will consist of three components: Drawing Tool for modeling, Part Identification for marking structural components in the ship section design, and BOM Calculation for calculating the Bill of Materials from the structural components in the ship section design. The expected outcome of this research is the development of an add-on program capable of automatically generating a BOM from a ship’s section design, demonstrated through a case study on the cargo oil tank section in the parallel middle body of a tanker.
Ship Hull Geometry Design by Using B-Spline Curve Fitting and Lofted Surface Generation Sheely Leony Artha Pasaribu; Berlian Arswendo Adietya; Muhammad Iqbal; Hasanudin Hasanudin; Wiwin Sulistyawati; Mohammad Sholikhan Arif; Ardi Nugroho Yulianto
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 23, No 2 (2026): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v23i2.84399

Abstract

As one of the largest archipelago countries in the world, Indonesia requires technological capability to independently develop efficient ship design systems. Currently, the Computer-Aided Design (CAD) software used for domestic ship design is still largely dominated by foreign commercial products, which require costly subscription fees. This dependence limits the technological independence of the national shipbuilding industry. This study aims to develop a simple CAD-based program for representing ship hull geometry using a parametric mathematical approach. The program reconstructs sectional curves using mathematics formulations and generates a continuous three-dimensional hull surface through a lofting method based on equal arc-length discretization and triangular mesh representation. The research methodology includes system design, curve and surface generation, geometric visualization, and validation through comparison with results obtained from commercial CAD software. The results demonstrate that the developed system is capable of accurately reconstructing sectional curves and generating a consistent lofted hull surface suitable for representing simple ship hull forms. This work provides an initial step toward the development of domestic ship hull design tools to support preliminary geometric modeling in Indonesia’s maritime industry.
Preliminary Study of an Integrated Calculation of Ship Strength on Tankers with Applicable Regulations Ardi Nugroho Yulianto; Erzad Iskandar Putra; Yuda Apri Hermawan; Teguh Putranto; Gita Marina Ahadyanti; Septia Hardy Sujiatanti; Danu Utama; Nurhadi Siswantoro; Irfan Zidni; Herry Sufyan Hadi
International Journal of Offshore and Coastal Engineering Vol. 7 No. 1 (2023)
Publisher : Department of Ocean Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25800914.v7i1.15529

Abstract

Recently, the development of the digital era has increased significantly. Industry 4.0 began to be discussed and applied in the early 21st century. Cyber-Physical systems are becoming a trend in current technological developments. Several technologies in Industry 4.0 are being applied, such as the internet of things, cloud computing, automated simulation, intelligent robots, big data analysis, augmented reality, and additive manufacturing. The shipyard industry is one industry that must be able to adapt to keep up with technological developments. In the ship's preliminary design stage, the strength calculation process that refers to certain regulations has an important role in the design process. The integrated calculation system will make working easier for a naval architect. This paper aims to conduct an initial study in calculating ship strength integrated in real-time with the regulations that govern it. This study produces an idea to integrate the calculation of ship strength with regulations from a class society that continues to grow. The research is expected to provide further development to assist in the preliminary design process that provides efficiency and more accurate monitoring of results.
Factors in an Effort to Acquire the Efficiency of the Cargo Compartment Design on Tankers Ardi Nugroho Yulianto; Teguh Putranto; Hasanudin Hasanudin; Abdullah Taufiq Akbar Siregar; Muhammad Ikbal Normawan; Raybonda Reinaldi Winarko; Adrian Rahmanto Putra; Noor Virliantarto; Good Year Surya Nusantara
International Journal of Offshore and Coastal Engineering Vol. 8 No. 1 (2024)
Publisher : Department of Ocean Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25800914.v8i1.20461

Abstract

Tankers are one of the popular modes of transportation associated with liquid cargo. Efficiency with respect to the volume of cargo transported by tankers is an essential consideration in the transportation business process, especially fuel oil, which has become a benchmark for the global economy recently. Various studies have been carried out to optimize cargo space. This study aims to define the factors that influence cargo compartment efficiency to increase the effectiveness in the transportation business. In this study, it is known that the transverse bulkhead arrangement affects the payload capacity, which is related to the criteria in the naval architect principle. The hopper design also influences the optimization of cargo volume, which can provide benefits in terms of payload. Excess cargo volume on existing ships due to hopper design optimization, the future ship design can reduce the length of the cargo compartments that still meet the desired payload. Reducing the length of the cargo hold will undoubtedly provide an opportunity to optimize the scantling analysis for longitudinal and transverse ship structures. This study is expected to be a reference and a more detailed discussion regarding the efficiency of cargo space on tankers in the future.
Optimization of Double Bottom Design in Cargo Hold Areas: Case Study Of Tanker With Lengths 150 m and Above Raybonda Reinaldi Winarko; Berlian Arswendo Adietya; Andi Trimulyono; Sunardi Sunardi; Stefanus Eko Wiratno; Ardiansyah Musa Efendi; Ardi Nugroho Yulianto
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 23, No 2 (2026): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v23i2.84390

Abstract

The shipping industry is keep advancing to produce the most efficient ship designs, including tanker ship designs. According to MARPOL Annex 1 Regulation 19, oil tankers with a deadweight of over 600 tonnes and built after 6 July 1996 must have double side and double bottom structures. These structures are intended to prevent oil spill in the event of hull damaged. However, they significantly reduce the cargo hold volume. Therefore, the objective of this research is to optimize the cargo hold volume by optimizing the double bottom design along the cargo oil tank. One of the optimization methods that can solve this problem is the brute force search method. Unlike heuristic algorithms, it provides exact rather than approximate results, making it ideal for solving small-scale problems with shorter iteration times. In this research, the variables are the locations of two cargo landing points at each knuckle of the ship's cargo oil tank. The constraints are the regulations governing clearance, stability, freeboard, and longitudinal strength of ship. The research resulted in a new design that increased the cargo oil tank volume by 375.996 m³, equivalent to 0.865%. A new ship with the same payload can be constructed using an optimized cargo oil tank configuration, reducing both the cargo tank length and the overall ship length by 1.011 m.
Co-Authors Abdullah Taufiq Akbar Siregar Achmad Zubaydi Aditya Dwi Saputra, Aditya Dwi Adrian Rahmanto Putra Ahmad, Roisul Fadli Amirruddinsyah, Muhammad Makki Andi Trimulyono Ardiansyah Musa Efendi Ari Santoso Aries Sulisetyono Ariesta, Rizky Chandra Aryawan, Wasis Dwi Berlian Arswendo Adietya Berlian Arswendo Adietya Danu Utama Dedi Budi Purwanto Eko Sulkhani Erzad Iskandar Putra Gita Marina Ahadyanti Good Year Surya Nusantara Hasanudin Hasanudin Hasanudin Hasanudin Hasanudin Hasanudin Hasanudin Hasanudin Hasanudin Hasanudin, - Herry Sufyan Hadi Hesty Anita Kurniawati Hesty Anita Kurniawati I Ketut Suastika Irfan Syarief Arief Irfan Zidni Karina Dayusari Mohammad Nurul Misbah Mohammad Sholikhan Arif Muhammad Hilmy Alfaruqi Muhammad Ikbal Normawan Muhammad Iqbal Muhammad Luqman Hakim Muhammad Makki Amirruddinsyah Nasirudin, Ahmad Noor Virliantarto Normawan, Muhammad Ikbal Nurhadi Siswanto Nusantara, Good Year Surya Pasaribu, Sheely Leony Artha Putra, Adrian Rahmanto Putra, Erzad Iskandar Putranto, Teguh Rakadrian Nugraha Buana Raybonda Reinaldi Winarko Raybonda Reinaldi Winarko Roisul Fadli Ahmad Septia Hardy Sujiatanti Setyawan, Dony Sheely Leony Artha Pasaribu Siregar, Abdullah Taufiq Akbar Sri Rejeki Wahyu Pribadi Stefanus Eko Wiratno Sujantoko Sujantoko Sulkhani, Eko Sunardi Sunardi Sunardi Sunardi, Sunardi SUPRAPTO Teguh Putranto Totok Yulianto Triyanda Gunawan Utama, Danu Virliantarto, Noor Warlinda Eka Triastuti Wasis Dwi Aryawan Wasis Dwi Aryawan Winarko, Raybonda Reinaldi Winarko, Raybonda Reinaldi Wiwin Sulistyawati Yuda Apri Hermawan