Article Per Year (5 Year)
p-Index From 2021 - 2026
1.642
P-Index
This Author published in this journals
All Journal Teknosains: Media Informasi Sains dan Teknologi EPI International Journal of Engineering International Journal of Metacentre Journal of Artificial Intelligence and Digital Business ARMADA : Jurnal Penelitian Multidisiplin Indonesian Journal of Maritime Technology or abbreviated (ISMATECH)
Andi Rachmianty
Program Studi Teknologi Rekayasa Operasi Kapal, Politeknik Maritim AMI Makassar, Indonesia
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

Published : 10 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 10 Documents
Search

 1 
The Influences of Lengthening Dimension of Ro-Ro Ferry Toward the Considerations of Hydrodynamics Characteristic and Loading Capacity Aspect Andi Rachmianty; Suandar Baso; Syamsul Asri
EPI International Journal of Engineering Vol 2 No 1 (2019): Volume 2 Number 1, February 2019 with Special Issue on Composite Materials & Stru
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/epi-ije.022019.08

Abstract

The ferry business has become an important business segment for ship designers, builders and operators. Therefore, many ways have been done in order to increase ferry business through the proper design or converting ships by lengthening. This research is focused on the influences of lengthening a Ro-Ro ferry to hydrodynamics characteristic and loading capacity aspects. Moreover, the ships also are fixed in the same width and draft dimensions. The difference of the Ro-Ro ferries length is indicated by the addition of one column of car space where one column car space is given by car size including distance between car columns spaces which is an increment of every 5.88 meter. The total resistances of Ro-Ro ferries are obtained by ship model experiment in towing tank. There are 4 ship models that are made. The lengthening a Ro-Ro ferry is described into non-dimensional parameter by the ratio of ship length and displacement volume (L/V1/3). The hydrodynamics and the loading capacity of carried car aspects could be described into the ratio of resistance and loading capacity of carried car (RT/SUK) with ship speed. The research result shows that the lengthening of a Ro-Ro ferry affects on total resistance, speed, and loading capacity of carried car. The increase of total resistance is caused by higher residual resistance at high speeds and this is experienced by small length size. Therefore by lengthening the Ro-Ro ferry it could reduce total resistance in the same speed especially the residuary resistance but eventhough lengthening Ro-Ro ferry the effective speed should be considered. In additions, the effective speed for actual ships dimension in the same Rt/SUK 0.05 i.e. B5L10 is about 13.85 knot, B5L11 14.33 knot, B5L12 14.94 knot, and B5L13 15.45 knot respectively.
A Concept Design of Training Ship in Indonesia Waterway: Toward A Type of Passenger-Container Vessel Rusi, Rusnaedi; Fitriah, Rifkah; Pettarani, Amrin; Rusi, Sudarman; AM, Andi Rachmianty; Baso, Suandar; Asis, Muhammad Akbar
International Journal of Metacentre Vol. 2 No. 2 (2022): December 2022
Publisher : Naval Architecture Departement, Hasanuddin University

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

Abstract

In the future, the seafaring profession will face some tough challenges. In order to address the challenges, the Maritime Vocational Education (MVE) is required to produce graduates with appropriate competencies related to the perspective of international trade in the shipping sector based on the Standards of Training, Certification and Watchkeeping for Seafarers (STCW). In order to improve the skills of students, a training ship is needed by maritime vocational education as a real practice for students. This study describes the concept of training ship design for maritime vocational education with consideration of Indonesian waters. The design concept starts with selecting the type of training ship, determining the capacity of the training ship, determining the main dimensions of the training ship design. Making line plans, making General Plan Drawings, calculating ship resistance taking into account Indonesian waters and determining the driving force of the main engine of the training ship as well as calculating the stability of the training ship. This design was applied to the AMI Makassar Maritime Polytechnic as a case study. The results showed that the type of Passenger-Container Vessel. The capacity of the training ship is around 150 students with a container load capacity of 8 TEUs. The main dimensions of the training ship design are the length between perpendicular (Lbp), width (B), height (H), and draft (T) respectively 69.23 m, 12.00 m, 5.50 m, and 2.54 m with Gross Tonage and ship engine power of 1.404,84 GT and 1090,7 Kwatts. The main dimensions of the training ship design are also corrected with the main dimension ratio parameters, geometric shape coefficients, weight and initial static stability.The seafaring profession will face some tough challenges today and in the future. Accordingly, Standards of Training, Certification and Watchkeeping for Seafarers (STCW)
Rubber Tyred Gantry (RTG) Failure Analysis Using FMEA Method at PT. Kaltim Kariangau Terminal Balikpapan Fitriah, Rifkah; Andi Ningrat; Dwi Wahyuni Rahman; Andi Rachmianty AM; Muslihati; Wardina Suwedy
Indonesian Journal of Maritime Technology Vol. 2 No. 2 (2024): Volume 2 Issue 2, December 2024
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v2i2.1261

Abstract

Failure Mode and Effect Analysis (FMEA) is a method designed to evaluate system designs by identifying various failure modes of a system, which consists of multiple components, and analyzing their impacts on the system's reliability. The primary goal of FMEA is to identify and address key issues at every stage of the design and production process to prevent defective products from reaching customers, thereby safeguarding the company’s reputation. This study aims to identify the types of damage occurring in Kalmar-brand Rubber Tyred Gantry (RTG) equipment at PT. Kaltim Kariangau Terminal Balikpapan and analyze these failures using the FMEA method. Data collection was conducted through field observations, interviews, and documentation. The FMEA calculations also include repair recommendations for each identified failure. Based on the analysis, several failures were found to rank highest in severity for each piece of equipment. For RTG 07, the most critical failure was the "Trouble Hoist," requiring corrective actions such as repairs to the motor system, brakes, and gearbox.
The Analysis of Work Accident Risk in Welding Process for Pipe Repair on Utility Boat PT LSM Rachmianty, Andi; Pragawati, Ni Gusti Ayu Putu Dewi Armay; Ningrat, Andi; Usman, Arif Fudddin; Rusnaedi; Shauqy, Muhammad Azhar
Indonesian Journal of Maritime Technology Vol. 2 No. 2 (2024): Volume 2 Issue 2, December 2024
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v2i2.1263

Abstract

PT LSM is a shipping company committed to focusing on providing integrated maritime services to support the oil & gas industry, PT LSM has a variety of offshore vessels to support these activities. LSM's shipping area is a rig area, where the area has a high level of danger and risk, therefore an adequate ship is needed both in crew and equipment on board. Especially in the piping system on board, if a leak occurs it can cause fatal things such as engine damage to an explosion and can cause work accidents such as fire and death. To minimize work accidents, risk hazard identification and risk control are made in each job, especially in piping work, namely pipe welding using the HIRADC method. This study used a descriptive qualitative method, in which the authors conducted field observations, interviews, and distributed questionnaires. The results of risk hazard identification, risk assessment and risk control will be entered in the HIRADC (Hazard Identification, Risk Assessment, and Determining Control) table. The conclusion of this study is that 43 hazards and 47 risks have been identified in pipe welding work. In the initial control, the low risk level was 42 risks (89.36%), the medium risk level was 5 risks (10.63%), and the high-risk level was 0 risks (0%). After further control of the identified risks, the risk level of medium risk (10.63%) has changed to low risk, so that all risk levels of the LSM Provider's ship pipe welding work have changed to a low risk level with a total of 47 risks (100%)). The controls used in pipe welding work are substitution, administration, and personal protective equipment (PPE).
Effect of Lifting Lug Hole Diameter Size on Strength Performance in Ship Block Lifting Process: English Arifuddin, Andi Mursid Nugraha; Nizam, Syahrul; Pawara, Muhammad Uswah; Sitorus, Chris Jeremy Verian; Rachmianty, Andi; Ningrat, Andi; Baso, Suandar
Indonesian Journal of Maritime Technology Vol. 3 No. 1 (2025): Volume 3 Issue 1, June 2025
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v3i1.8481345

Abstract

The safety of the ship block lifting process is always a serious concern during the assembly of ship blocks. The block/structure and equipment must not be damaged during the lifting process. This study aims to determine the structural response values that occur with various hole diameter sizes of the lifting lug during the ship block lifting process. The object of this research is a ship block from the new construction of the Ferry Ro-Ro 1500 GT. The method used is numerical simulation based on finite element method (FEM) software. The simulation is conducted to obtain the stress and deformation values for each size of the lifting lug. The selected ship block load is the largest ship block load, which is 52,380 tons. The number of lifting lugs used in the simulation is 5, with varying diameters of 53, 58, 63, 68, and 73 cm. Based on the simulation results, the diameter of 63 mm gets the minimum normal and shear stress figures. While the minimum von misses stress figure is shown by the variation of the diameter of 73 mm. While the smallest deformation figure is shown by the variation of the diameter of 53 mm. In general, all variations of lifting lug holes can still be applied with the note that the weight of the load must be considered.
The Influence To Service Quality, Facilities, and Ticket Price on Passenger Satisfaction at PT. Pelni (Persero) Baubau Branch Hasan, Muslihati; Ningrat, Andi; Usman, Arif Fuddin; Fitriah, Rifkah; Rachmianty, andi
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 3 No. 2 (2024): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v3i2.1001

Abstract

Sea transportation is the most important means of inter-island connectivity in Indonesia. Companies must try to make customers feel satisfied by providing better offers and services, companies must be able to maintain their market position in the midst of increasing competition. The purpose of this study was to evaluate the variables of service quality, facilities and ticket prices partially on passenger satisfaction at PT. Pelni (Persero) Baubau Branch. Evaluating the quality of services, facilities and ticket prices simultaneously on passenger satisfaction and evaluate which of the three parameters used has the most influence on passenger satisfaction. The data used in this study are primary data obtained by distributing questionnaires to the passengers of PT. Pelni (Persero) Baubau Branch has 50 employees using multiple linear regression analysis techniques. The results showed that Service Quality (X1) had a significant level of 0.013 <0.05. This means that service quality has a positive and significant effect on passenger satisfaction. Facility (X2) has a significant level of 0.012 <0.05. This means that facilities have a positive and significant effect on passenger satisfaction. Ticket prices (x3) have a significant level of 0.019 <0.05. This means that ticket prices have a positive and significant effect on passenger satisfaction.
Enhancing Ship Seaworthiness Supervision: A Study at KSOP Class II Kendari Rachmianty, Andi; Yusri, Muhammad; Ningrat, Andi; Arifuddin, Andi Mursid Nugraha; Usman, Arif Fudddin; Rusnaedi
Indonesian Journal of Maritime Technology Vol. 3 No. 2 (2025): Volume 3 Issue 2, December 2025
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v3i2.8481363

Abstract

Ship accidents often occur due to ships being unseaworthy to sail. The harbor master plays an important role in supervising the seaworthiness of ships and port activities. However, ship accidents still often occur due to the unseaworthiness of ships to sail. This study examines the level of performance of the harbor master at KSOP Class II Kendari. The method used is the Costumer Satisfaction Index (CSI). The questionnaire was given to the sample which was calculated using the Slovin calculation. The results of the questionnaire have gone through validity and reliability tests and show that the results obtained are valid and reliable. The percentage value of CSI obtained reached 84.95%. This figure indicates that customers are very satisfied with the performance of KSOP Class II Kendari. This shows that KSOP Class II Kendari has succeeded in meeting customer expectations and needs well.
Kepuasan pengguna jasa terhadap ayanan freight forwarding PT Malino Nirwana Trans rachmianty, andi; Rizqy, Miftahul; Muslihati, Muslihati; Usman, Arif Fuddin; Rusnaedi, Rusnaedi
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 4 (2026): November - January
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i4.3605

Abstract

Pertumbuhan aktivitas logistik dan perdagangan yang semakin kompetitif menuntut perusahaan freight forwarding untuk menyediakan layanan yang mampu memenuhi harapan pengguna jasa secara konsisten. PT Malino Nirwana Trans merupakan perusahaan yang bergerak daIam pengeIoIaan dan pengiriman barang, khususnya komoditas yang membutuhkan penanganan rantai dingin. Kualitas pelayanan freight forwarding yang diberikan sangat menentukan kepuasan pelanggan.   Penelitian ini bertujuan menganalisis bagaimana tingkat kepuasan pelanggan terhadap layanan freight forwarding yang diberikan oleh PT Malino Nirwana Trans dengan menggunakan metode Customer Satisfaction Index (CSI). Metode ini dipilih karena mampu menunjukkan bagaimana tingkat kepuasan pelanggan berdasarkan tingkat kepentingan (importance) dan tingkat kinerja layanan (perfomance). Data diperoleh dengan menyebarkan kuesioner ke konsumen aktif perusahaan dan dilengkapi dengan wawancara untuk memperkuat hasil anaIisis. Instrumen penelitian diuji menggunakan uji validitas dan uji reliabilitas yang menunjukkan item pernyataan dan hasil sebaran kusioner berada pada kategori valid dan reliabeI. Hasil pengolahan data menunjukkan bahwa secara keseluruhan pelanggan menilai Iayanan PT MaIino Nirwana Trans Sangat Puas berdasarkan niIai CSI sebesar 84,8%. Capaian ini mengindikasikan bahwa perusahaan telah mampu memenuhi sebagian besar kebutuhan dan ekspektasi peIanggan, terutama pada aspek keandalan layanan, ketanggapan staf, serta jaminan keamanan pengiriman. Meskipun demikian, beberapa aspek seperti akurasi informasi pelacakan, kecepatan respons layanan pelanggan, dan ketepatan jadwal pengiriman masih memerlukan peningkatan agar kualitas layanan dapat lebih optimal dan berkelanjutan
Keterlambatan Operasional Kapal Penumpang dan Implikasinya terhadap Standar Pelayanan: Studi pada KM. Sinabung dan KM. Nggapulu di Pelabuhan Murhum Arif Fuddin Usman; Andi Ningrat; Andi Rachmianty; Muslihati; Muhammad Aris Kastian
ARMADA : Jurnal Penelitian Multidisiplin Vol. 4 No. 2 (2026): ARMADA : Jurnal Penelitian Multidisplin, Febuary 2026
Publisher : LPPM Sekolah Tinggi Ilmu Ekonomi 45 Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/armada.v4i2.1925

Abstract

Studi ini bertujuan untuk mengetahui rata-rata tingkat keterlambatan waktu kedatangan dan keberangkatan KM. Sinabung dan KM. Nggapulu di Pelabuhan Murhum, Kota Baubau, Sulawesi Tenggara. Data yang diolah adalah data kuantitatif estimasi waktu kedatangan dengan waktu riil kapal tiba, kemudian estimasi waktu keberangkatan dengan waktu riil kapal berangkat. Hasil penelitian, rata-rata keterlambatan pada KM. Sinabung untuk waktu tiba sebesar 2 jam 13 menit dan waktu berangkat sebesar 2 jam 53 menit. Untuk KM. Nggapulu rata-rata keterlambatan waktu tiba sebesar 1 jam 8 menit dan waktu keberangkatannya sebesar 1 jam 53 menit.  Standar Pelayanan Penumpang Angkutan Laut untuk toleransi keterlambatan sebesar 10 persen, maka KM. Sinabung melebihi batas toleransi, sedangkan KM. Nggapulu masih dalam batas toleransi. Sejumlah masalah utama sebagai penyebab keterlambatan yang memiliki pengaruh kuat adalah kurangnya jumlah petugas pelabuhan, proses pemeriksaan keamanan pada peralatan rusak yang memakan waktu, dan cuaca buruk yang membuat proses debarkasi-embarkasi kerap molor hingga tidak efisien.
OPTIMASI ALAT PENGGERAK KAPAL IKAN BERBASIS ENERGI TERBARUKAN DAN MESIN DIESEL BERDASARKAN VARIASI MUSIM DAN OPERASIONAL NELAYAN Mubarak, Azhar Aras; Rachmianty, Andi; Azrullah, Azrullah; Maada, Yayan
Teknosains Vol 20 No 1 (2026): Januari-April
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/teknosains.v20i1.63444

Abstract

Sektor perikanan merupakan salah satu faktor kunci yang menopang perekonomian masyarakat di wilayah pesisir di Indonesia, termasuk di Kabupaten Buton. Mayoritas nelayan di wilayah ini menggunakan kapal yang memiliki ketergantungan tinggi terhadap bahan bakar fosil yang harganya fluktuatif. Di sisi lain, potensi solar energy yang melimpah di Indonesia, dapat digunakan untuk menggantikan sumber energi konvensional, membantu nelayan dalam mengurangi ketergantungan pada bahan bakar diesel. Penelitian ini bertujuan untuk menganalisis desain kapal purse seine berbasis data lapangan, menghitung karakteristik tahanan dan stabilitas kapal, serta mengevaluasi potensi penerapan sistem tenaga hybrid berbasis panel surya pada kapal nelayan. Metode penelitian meliputi: (1) pengumpulan data lapangan, (2) pemodelan geometri kapal menggunakan Maxsurf Modeler, (3) analisis tahanan kapal dengan metode Holtrop dan Van Oortmerssen melalui Maxsurf Resistance, (4) analisis stabilitas menggunakan Maxsurf Stability, serta (5) analisis potensi energi matahari dan perhitungan produksi PLTS pada kapal menggunakan data radiasi lokal Mawasangka Tengah. Secara keseluruhan, penelitian ini menunjukkan bahwa desain kapal memenuhi standar teknis, pemodelan hidrodinamika memberikan gambaran performa yang akurat, dan penerapan sistem energi hybrid berbasis panel surya sangat potensial untuk meningkatkan efisiensi energi serta keberlanjutan operasi kapal nelayan.
Co-Authors Andi Ningrat Andi Ningrat Arif Fuddin Usman Arifuddin, Andi Mursid Nugraha Asis, Muhammad Akbar Azrullah, Azrullah Chris Jeremy Verian Sitorus Dwi Wahyuni Rahman Fitriah, Rifkah Hasan, Muslihati M. Uswah Pawara Maada, Yayan mubarak, azhar aras Muhammad Aris Kastian Muhammad Yusri Muslihati Muslihati Ningrat, Andi Nizam, Syahrul Pettarani, Amrin Pragawati, Ni Gusti Ayu Putu Dewi Armay Rizqy, Miftahul Rusi, Rusnaedi Rusi, Sudarman Rusnaedi Rusnaedi, Rusnaedi Shauqy, Muhammad Azhar Suandar Baso Suandar Baso Syamsul Asri Wardina Suwedy