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Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan
Published by Universitas Hasanuddin
ISSN : 27472124     EISSN : 27215717     DOI : 10.20956
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Energy Engineering Transportation
Dalam Pengembangan dan pengolahan SDA maritim memerlukan kerjasama multidisiplin ilmu, dimana kesemua disiplin ilmu tersebut berperan besar dalam menjadikan Indonesia sebagai poros maritim dunia. Oleh karena itu diperlukan inovasi dan sinergi untuk menghasilkan riset tentang teknologi kelautan oleh perguruan tinggi, lembaga-lembaga penelitian dan industri dapat memberikan kontribusi terhadap issue tersebut. Tujuan Zona Laut adalah sebagai wadah menyalurkan pemikiran, ide-ide cemerlang dan konstruktif komprehensif sehingga menjadi bagian usulan-usulan solusi bagi kemajuan pembangunan Sumber Daya Kelautan Indonesia. Topik-topik yang dapat diterbitkan Zona Laut ini adalah: 1. Teknologi dan Rekayasa Bangunan Lepas Pantai 2. Desain Produk Bangunan Perikanan dan Kelautan 3. Manajemen Transportasi Laut dan Aplikasi Teknologi Pelayaran 4. Energi Kelautan Terbarukan 5. Sistem dan Pengendalian Kelautan 6. Material Maju kelautan 7. Rekayasa dan Manajemen Kepelabuhanan serta Pengembangan Sumber Daya Pesisir 8. Oseanografi dan Keteknikpantaian 9. Kebencanaan Pantai dan Lingkungan Laut Jurnal ini diterbitkan oleh Departemen Teknik Kelautan, Fakultas Teknik, Universitas Hasanuddin pada bulan Maret, Juli dan Nopember setiap tahun. Naskah yang telah disetujui untuk diterbitkan telah ditinjau oleh pengulas dan abstrak bebas untuk diunduh melalui situs web kami.
Arjuna Subject : Teknik (semua kategori) - Teknik Kelautan
Articles 207 Documents
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Study Of Lavatory Installation Methods On Ship Landing Platforms Musa, Musa; Munazid , Ali; Suwasono , Bagiyo; Hardianto, Didik; Sutiyo, Sutiyo
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 2, July 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.vi.45475

Abstract

Landing Platform Dock (LPD) ships as amphibious warships with complex accommodation systems, including lavatory installations, require effective and efficient installation methods. This study was motivated by the need to compare two lavatory installation methods, namely the conventional method and the modular method, in an effort to increase productivity and reduce the amount of rework in the construction of LPD ships. The research method used is the direct observation method at the national shipyard, with data collection through installation time records, number of man hours, material costs, and number of rework events. Data were analyzed using a quantitative descriptive approach by comparing these variables in each type of lavatory. In this study, 3 types of lavatory with different dimensions and shapes were used. The modular method which requires 10-14 days to complete has proven to be significantly more efficient in terms of implementation time compared to the conventional method with results of 19-25 days according to the type of lavatory. Likewise in the number of man-hours needed, which reached 384-480 JO for the conventional method and 264-456 JO for the modular method in the three types of work. The costs incurred for this production require IDR 67,880,890 - IDR 81,377,090 for the modular method and IDR 71,682,490 - IDR 87,713,090 for the conventional method. Thus, the modular method has proven to be more effective in increasing productivity and reducing the cost of installing a better lavatory.
Assessment of Organic Matter and Chlorine Levels in Watu Kenong Coastal Waters, Situbondo Pahlewi, Anita Diah
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 2, July 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.vi.45548

Abstract

The coastal area that has potential natural resources both tourism and coral conservation in Situbondo Regency, East Java, is the coastal area in Bungatan District. In Bungatan, there are several beaches along the Pantura as marine tourism objects, one of them called Watu Kenong Beach. A case reported online in June 2025 where there was a complaint from a marine community group to local government about an extensive coral reef’s damage in Watu Kenong covering a dozen hectares area. The purpose of this study is to determine the concentration of organic matter and chlorine in Watu Kenong waters as an initial study material for evaluating the water quality of Watu Kenong waters in order to assist the research in the rehabilitation process of coral reefs. Water sampling locations are divided into 3 parts, namely location 1 at the Pasir Putih area, locations 2 and location 3 at the Watu Kenong section. Research method used is descriptive method. The value of organic matter parameters in the waters of Watu Kenong and its surroundings is in the range of 79.63 - 97.33 mg/L. The chlorine parameter value is 0.01 mg/L at 3 water sampling locations. The conclusion of this research are the organic matter has higher level that exceed the normal threshold and it can be considered as a pollution. The chlorine concentration is below the threshold so it is in good condition.
Identification and Valuation of Blue Economy Sectors in the Seribu Islands Regency Based on Economic, Social and Envorment Performance Azka, Azka; Sahid Sujiwo, Aryo
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 2, July 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.vi.42327

Abstract

Resources contained along the coast and ocean play a significant part in fostering regional economic growth. Therefore, for the benefit of the community, both now and in the future, marine and coastal regions must be protected and used efficiently. Developing the blue economy sector is one promising way to promote economic growth in coastal and marine regions. One issue coming up has to do with the blue economy's governance and sustainability performance. The purpose of this study is to measure the sustainability performance of the blue economy and to identify the sectors that require development. Furthermore, this study aims to develop a governance model for the blue economy based on the TBL concept. Untung Jawa Island, located in Seribu Islands Regency - DKI Jakarta Province is the study area. FGD, questionnaires, in-depth interviews, and field observations were among the methods used to collect data. In order to address the research issues, this study uses the Interpretive Structural Modeling (ISM) and Blue Economy Valuation Toolkit (BEVTK) methodologies. According to the findings, four sectors might be developed: i.e., ship docking, aquaculture, port and sea transportation, and marine tourism. In this instance, ship docking performs the best in terms of environmental sustainability, port and sea transportation concerning social sustainability, and marine tourism as regards economic sustainability. Additionally, it was discovered that six factors: i.e., central and regional government policies, law enforcement and regulations, socio-cultural policies, community leaderships, and economic capacity and viability are crucial to the growth of a sustainable blue economy.
Indonesian Natural Materials for Sustainable Ocean Structures: Synergizing Nibung Wood Characterization, Fiber Composites, and Processing Innovations Sitorus, Bintang Natan; Hermanto, Mochammad Fathurridho; Nandalianadhira, Nafisa
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 2, July 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.vi.45362

Abstract

This research explores the potential of Indonesian natural materials - specifically Nibung wood (Oncosperma tigillarium) and vegetable fibers (jute, ironwood) - for sustainable ocean structures. The literature review focused on: (1) mechanical and physical characterization of Nibung wood; (2) optimization of Nibung-fiber thermoplastic composites using the Taguchi-GRA method; (3) evaluation of jute fiber resistance to seawater uptake; and (4) innovation of traditional Bajau modular connection techniques. The narrative-thematic method categorizes the findings based on material characteristics, surface modification, structural performance, and marine tidal applications. Results showed Nibung wood has strength class II-III (density 0.53 g/cm³; MOE 5,848 MPa; MOR 4,325 MPa), optimized Nibung-rPP WPC (<2% water absorption, tensile strength >30 MPa), and jute fibers experienced ≤10% impact reduction after 84 days of sea immersion. Bajau- style modular joint detailing improved airflow and minimized moisture accumulation. Recommendations include integration of Nibung wood in local thermoplastic WPC, alkali-coupling treatment, and adaptation of modular joints for modern oceanstructures. 
Experimental Study on The Effect of Epoxy Zinc and Thinner Ratio on Platform Structure Coating Quality Lasma, Novi Anggiat; Kristiyono, Tri Agung
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 2, July 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.vi.45451

Abstract

Paint serves as a coating material that provides aesthetic value, adhesive strength, and protection to surfaces from environmental corrosion. The one of critical aspect is the paint and thinner ratio, which can influence adhesive strength and the performance of protection. This experimental study investigates the effect of varying ratios of epoxy zinc paint (Avantguard 750) and thinner (08450) on adhesion strength and drying rate. Paint was mixed with thinner at 10%, 20%, 30%, 40%, and 50% of the paint's volume. Steel plates were used as test specimens, coated via spray method. Adhesion quality was assessed using the “X–Cut Test” and “Cross Cut Tape Test” based on ASTM D3359 Methods A and B and the adhesion tests showed excellent results with a rating 5, indicating no peeling. Drying quality was evaluated using the “Solvent Rub” method according to ASTM D4752-20. Dry tests also have positive results with a rating 5 within 6 to 24 hours. The findings suggest that variations in thinner concentration do not significantly affect adhesion strength or drying time.
The The effect of soaking coconut fiber in an alkaline solution on the tensile strength of composites Arisetya, Danny Arisetya Saputra; Widodo, Akhmad Basuki; Azhar, Ali; Baroroh, Intan; Kristiyono , Tri Agung
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 3, November 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

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Abstract

Over time, the world's composite materials industry is increasingly developing. Generally, fiberglass-reinforced composite materials are developed. However, fiberglass fibers are expensive and not environtmentally friendly. The aim of this research was to determine the effect of composites reinforced with coconut fibers soaked in alkali. Specimen making using coconut fiber reinforcement that is pre-soaked using an alkaline chemical compound (Na) with a concentration of 5%. This study carried out tensile testing with variations of coconut fiber and soaked it in alkaline chemical compounds for 1-4 days. The measurement of the tensile strength value in the composite refers to the ASTM D638-02 standard and the tensile strength value will be analyzed using the ANOVA method to determine the significant effect on the soaking treatment of NaOH. The results of the tensile strength test in this study are far from the standard results that have been set by the Indonesian Classification Bureau (BKI) in 2021. So, coconut fiber with alkaline soaking for 1-4 days cannot be used as a substitute for fiberglass as a composite material reinforcement to be applied as the main material of the ship.
Biological Review of Squid (Stenoteuthis oualaniensis) in North Sulawesi (Case Study of Squid Caught in Motto Waters, North Lembeh, Bitung City) Arifin, Muhammad Zainul; Saranga, Rudi; Hamel, Samuel; Manohas, Jul; Putri, Elsari T.; Antou , Lusje
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 3, November 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

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

Abstract

Fishing with the target of squid by fishermen in the Motto Village is a hereditary cultural fishing and has been going on for a long time. The research on squid’s biology of Motto village is important to support this fishing activities The purpose of this study was to identify squid caught based on biology in the waters of the Motto Village. The method used in this research is descriptive research method. The research was conducted during September to November 2021. Data was collected through observation and interviews. The results obtained indicated that the squids caught in Motto waters were a Stenoteuthis oualaniensis. Maximum mantle length 23 cmML, minimum mantle length 9.6 cmML with an average of 11.80 cm ML. Maximum weight of 500 grams, minimum weight of 10 grams with an average of 70 grams. The results of the length-weight ratio obtained the value of R2 was 0.7929 where the determination or effect of the length variation of the mantle on the weight variation of the squid was 79.29%. The growth pattern of squid are negative allometric or length increase more dominant than weight increase.
Seakeeping Performance and Passenger Comfort Assessment of a 300 GT Ro-Ro Ferry Using RAO, MSI, and MII Analyses Wahidah, Jusma; Ariani, Vidya Rezeki; Alamsyah; Wulandari, Amalia Ika; Suwedy, Wardina; Sitorus, Chris Jeremy Verian; Hariyono; Kustiwansa, Harlian; Agusty, Cindy Lionita; Syam, Muhammad Anjas
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 3, November 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

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Abstract

This study examines the motion response and onboard comfort of a Ro-Ro ferry under varying wave directions and speeds using the Response Amplitude Operator (RAO), Motion Sickness Incidence (MSI), and motion-induced interruptions (MII) as evaluation parameters. Simulations were conducted using Maxsurf Motion software with wave heights of 3 m and 3.5 m and encounter angles of 0° (following seas), 90° (beam seas), and 180° (head seas) at vessel speeds of 0 and 12 knots. The MSI was assessed using both simulation results and empirical calculations, whereas the MII was evaluated according to the ISO 2631 standards at three onboard locations: the passenger, navigation, and vehicle decks. The RAO results indicate that the vessel met the NORDFORSK (1987) motion criteria under following and head seas but exceeded the roll limits in beam seas. The MSI values remained within the moderate comfort range, except under head seas at 12 kn, where the values approached the alert thresholds. The MII remained within acceptable levels under most conditions, although probable interruption levels were observed on the passenger and vehicle decks during beam sea conditions. Overall, the findings emphasize that wave direction and vessel speed significantly influence motion-induced discomfort and operational performance, underscoring the importance of optimizing route planning and speed to improve passenger safety and seakeeping performance on roll-on/roll-off ferries.
Analysis of Reduction Cost of Assembly Block Side Shell 1A (SS 1A) Using Critical Path Method (CPM) in Hospital Ship Project Suharyoko; Baroroh, Intan
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 3, November 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

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Abstract

Abstract The hospital ship project is a major project that has a long period of time, with limited space allocation and human resources as well. In order to avoid problems for PT XXX related to project completion, namely experiencing delays, where many factors affect the course of the project, an improvement analysis is needed for optimization. Optimization is done by scheduling a new project with the hope that in the next similar project PT XXX will not experience similar problems. Using Critical Path Method (CPM) analysis, the assembly process of Block Side Sheel 1A (SS 1A) on the Hospital Ship Project has a work network analysis with acceleration on activities E-F-G-J-K-L-M-N-S, through analysis steps using overtime. Thus it takes an acceleration cost of Rp. 6,943,510, or an additional cost of 32.26% of the initial cost to minimize the time from 64 days to 37 days, so that there is no delay in future hospital projects.
Evaluasi Penerapan ISPS Code di MV Oriental Jade Himawan, Zidan Alwi; Sriantini, Ari; Listriyawati, Nyoman Ardiana
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 3, November 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

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Abstract

The implementation of the International Ship and Port Facility Security (ISPS) Code is a crucial effort to ensure ship security, particularly when vessels are berthed or anchored in high-risk areas. However, in practice, not all ships apply these standards optimally. This study aims to evaluate the application of the ISPS Code in watchkeeping operations aboard MV Oriental Jade, particularly after a theft incident that occurred while the vessel was anchored at Belawan Port. This research employs a qualitative descriptive approach with a case study method. Data were collected through observation, interviews with ship officers, and supporting documentation. The results indicate that although the ship's watchkeeping procedures formally adhere to the ISPS Code and the STCW 1978 Amendment 2010, practical implementation remains suboptimal. Several challenges were identified, including limited personnel, crew fatigue, lack of security training, and insufficient supporting facilities such as CCTV and communication devices. Security improvement efforts onboard remain reactive and lack systematic structure. This study recommends regular training, proper supervision, and the provision of adequate supporting equipment to ensure the effective and sustainable implementation of the ISPS Code onboard.

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