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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Journal of Science and Applicative Technology Jurnal Penelitian Perikanan Indonesia Authentic Research of Global Fisheries Application Journal (Aurelia Journal) MARLIN : Marine and Fisheries Science Technology Journal Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan Jurnal Sains dan Teknologi

Firdaus, Anas Noor

Program Studi Teknologi Kelautan - Politeknik KP Pangandaran Jl Raya Pangandaran KM.02, Pangandaran, Jawa Barat-Indonesia

Author-ID : 1333856

Aerospace Engineering Agriculture, Biological Sciences & Forestry 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 Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Transportation Veterinary

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RESPON IKAN DAN HASIL TANGKAPAN BERDASARKAN PERBEDAAN KOMBINASI WARNA CAHAYA LED SEBAGAI ATRAKTOR Arif Baswantara; Anas Noor Firdaus; Wahyu Puji Astiyani; Indra Jaya; Yusfiandayani Yusfiandayani
Jurnal Penelitian Perikanan Indonesia Vol 26, No 3 (2020): (September) 2020
Publisher : Pusat Riset Perikanan, BRSDM KP.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jppi.26.3.2020.181-188

Ketertarikan ikan terhadap cahaya telah lama dimanfaatkan sebagai salah satu teknologi dalam penangkapan ikan. Hal tersebut menyebabkan perkembangan pengetahuan tentang hal ini terus dilakukan hingga saat ini. Penelitian ini bertujuan untuk mengetahui respon dan hasil tangkapan ikan terhadap dua kombinasi warna cahaya LED yang berbeda. Kombinasi warna cahaya yang digunakan adalah kombinasi warna biru-merah (BR) dan kombinasi warna putih-merah (WR). Pengambilan data dilakukan pada alat tangkap bagan. Data flux cahaya dan data akustik diambil untuk masing-masing kombinasi. Data bobot hasil tangkapan diambil untuk masing-masing kombinasi warna cahaya. Hasil yang diperoleh menunjukkan bahwa kombinasi cahaya BR sedikit lebih lambat dalam menarik ikan untuk berkumpul, namun ikan di bawah kombinasi cahaya BR dapat bertahan lebih lama dibandingkan ikan di bawah kombinasi cahaya WR. Hasil uji statistik menunjukan bahwa kombinasi cahaya BR memiliki hasil tangkapan yang lebih banyak dibandingkan dengan kombinasi cahaya WR. Namun, perbedaan antara keduanya tidak signifikan.The attraction of fish toward the light has long been used as technology in fishing gear. This led to the development of knowledge about this subject continues to this day. The aim of this research is to study the fish response and catches toward of two differences LED light color combination. One combination was blue-red light color (BR) and the other was white-red light color (WR). Data was collected on lift nets. Data of luminous flux and acoustic taken for each light combination. Data of catched fish taken for each light combination. The result showed that BR combination slightly slower than WR combination in aggregating fish, however BR combination kept fish staying below it in longer time than WR combination. In addition, the results of statics test showed that BR combination had more catched fish than WR combination, although the different between both not significant.

ANALISIS NUMERIK PENGARUH MULTIBODY PADA KONFIGURASI TRANSFER LNG SECARA SIDE-BY-SIDE DENGAN VARIASI JARAK Yuni Ari Wibowo; Anas Noor Firdaus
Marlin : Marine and Fisheries Science Technology Journal Vol 1, No 1 (2020): (Februari, 2020)
Publisher : Politeknik Kelautan dan Perikanan Pangandaran

Kebutuhan akan energi bersih dalam satu dekade terakhir terus meningkat seiring dengan kesadaran user dan regulator untuk menjaga kelestarian lingkungan, sehingga dibutuhkan berbagai macam upaya untuk mengelola dan memperluas produksinya. Salah satu jenis clean energy yang akhir-akhir ini menyita perhatian industri global adalah Liquefied Natural Gas (LNG). Asia Pasifik memiliki 9,4% dari cadangan gas dunia, dengan Indonesia menyumbang 1,53%. Kebanyakan cadangan LNG ditemukan pada laut lepas (offshore) dan terisolasi dari infrastruktur daratan. Untuk mengatasi permasalahan tersebut dibutuhkanlah fasilitas struktur bangunan apung, seperti FSRU. FSRU sendiri biasanya ditambatkan pada jetty/dermaga dengan sistem berthing. Dalam mendesain dermaga perlu dipertimbangkan gaya-gaya yang timbul akibat kondisi berthing dengan konfigurasi side-by-side. Konfigurasi ini menciptakan efek multibody dalam perilaku hidrodinamika, sehingga penelitian ini bertujuan mengkaji efek multibody antara FSRU dan LNGC dengan variasi jarak satu sama lain 2, 4, 6 dan 8 m. Gerakan FSRU ditinjau dalam penelitian ini dengan skenario pemodelan tanpa pengaruh dan terpengaruh LNGC. Hal ini penting dilakukan dalam perancangan jetty karena FSRU ditambatkan pada jetty. Berdasarkan simulasi numerik analisis dinamis frequency domain yang dihasilkan, didapatkan bahwa efek multibody terlihat pada model side-by-side. Efek multibody akibat propagasi gelombang dari arah head seas (= 180o) tidak menyebabkan dampak signifikan pada variasi jarak, kecuali pada jarak 2 m akibat fenomena standing wave. Pada gelombang yang berpropagasi arah seperempat haluan (= 225o)) dan arah samping (= 270o) juga terlihat adanya efek multibody pada variasi jarak. Pada model dengan jarak 4 dan 8 m, karakter RAO cenderung lebih rendah atau sama dengan RAO pada model FSRU free floating. Namun pada jarak 2 dan 6 m, karakter RAO lebih tinggi dari dari RAO FSRU free floating. Selain menaikkan dan menurunkan harga RAO gerakan, efek multibody juga menggeser frekuensi natural (?) struktur bangunan apung dengan beda 0.1 – 0.3 rad/s. Hal ini penting diketahui karena posisi frekuensi natural dapat memicu magnifikasi gerakan jika terjadi resonansi.The demand of clean energy in the last decade continues to increase along with the awareness of users and regulators to preserve the environment, so that efforts are needed to manage and expand their production. A type of clean energy that has recently caught the attention of the global industry is Liquefied Natural Gas (LNG). Asia Pacific has 9.4% of the world’s gas reserves, with Indonesia contributing 1.53%. Most LNG reserves are located in offshore and isolated from land infrastructure. To overcome these problems, floating structures, such as the FSRU, are needed. The FSRU is usually moored to the jetty / dock with the berthing system. In designing the jetty it is necessary to consider the forces that arise due to berthing condition with side-by-side configuration. This configuration create a multibody effect in hydrodynamic behavior, this study aims to examine the multibody effects between FSRU and LNGC with variations in distance 2, 4, 6 and 8 m. The FSRU movement was reviewed in this study with a modeling scenario without the influence and influence of the LNGC. This is important to evaluate in designing the jetty because the FSRU is moored to the jetty. According to the numerical simulation of the dynamic frequency domain analysis, it was found that the multibody effect was found in the side-by-side model. The multibody effect due to wave propagation from the direction of the head seas (= 180o) does not cause a significant impact on the variation of the distance, except at a distance of 2 m due to the standing wave phenomenon. While the waves propagating in the direction of a quarter of the bow (= 225o) and the side direction (= 270o) a multibody effect is also found in the variation of distance. In models with a distance of 4 and 8 m, the RAO character tends to be lower or equal to RAO in the free floating FSRU model. Therefore at a distance of 2 and 6 m, the RAO character is higher than that of the RAO free floating FSRU. In addition to raising and lowering the RAO price of the movement, the multibody effect also shifts the natural frequency of the floating structure with a difference of 0.1 - 0.3 rad / s. This is important to investigate because the position of natural frequencies can trigger magnification of the movement in the event of resonance.

BIOLOGI, KUALITAS AIR DAN PERIKANAN RAJUNGAN PORTUNUS PELAGICUS (LINNAEUS, 1758) DI KABUPATEN CIREBON Anas Noor Firdaus; Arif Baswantara; Yuni Ari Wibowo
Marlin : Marine and Fisheries Science Technology Journal Vol 1, No 2 (2020): (Agustus, 2020)
Publisher : Politeknik Kelautan dan Perikanan Pangandaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/marlin.V1.I2.2020.97-104

Kabupaten Cirebon yang memiliki wilayah pesisir dan daerah pantai, tentu menjadikan sektor perikanan sebagai salah satu sektor unggulan, salah satunya adalah perikanan rajungan. Rajungan (Portunus pelagicus) merupakan salah satu komoditas yang sangat penting di Kabupaten Cirebon. Satu dekade ini di daerah Cirebon, penangkapan rajungan telah meningkat (overfishing), selain itu, parameter biologi dan kualitas air sangat berpengaruh terhadap keberlanjutannya. Tujuan dari penelitian ini adalah mengetahui aspek biologi rajungan, menganalisis potensi rajungan terkait isu overfishing, menganalisis parameter lingkungan dari perairan, dan memahami aspek sosial nelayan rajungan di Cirebon. Penelitian menunjukkan bahwa secara umum rajungan jantan lebih banyak tertangkap dengan rasio jenis kelamin 1,6:1, rajungan jantan juga memiliki ukuran tubuh relatif lebih besar dibandingkan dengan rajungan betina. Fekunditas rajungan betina bertelur berkisar antara 1,69 juta sampai dengan 1,95 juta butir telur dengan tingkat kematangan gonad (TKG) ada direntang antara TKG II sampai dengan TKG V. Panjang rajungan pertama kali matang gonad (Lm) berada pada nilai 115,89 mm dan panjang rajungan pertama kali tertangkap (Lc) berada pada nilai 117,93 mm. Di Cirebon, lingkungan perairan sumberdaya rajungan, memiliki kisaran suhu antara 28° C dan 29° C, salinitas antara 25 ‰ dan 30 ‰, derajat keasaman (pH) antara 7 dan 8, serta tingkat kecerahan antara 4 dan 5 meter.

Karakteristik Hambur Balik Akustik Rajungan (Portunus pelagicus) pada Kondisi Terkontrol Arif Baswantara; Anas Noor Firdaus; Wahyu Puji Astiyani
Journal of Science and Applicative Technology Vol 5 No 1 (2021): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i1.311

Rajungan (Portunus pelagicus) atau blue swimming crab merupakan biota yang memiliki area penyebaran yang luas termasuk di Indonesia. P.pelagicus juga menjadi komoditas ekonomis penting bagi Indonesia, sehingga menjaga dan mengetahui keberadaan P.pelagicus menjadi sangat penting. Hydro-acoustic menjadi salah satu metode yang dapat digunakan untuk memetakan keberadaan dari P.pelagicus. Langkah awal yang dilakukan yaitu mengetahui karakteristik hambur balik dari P.pelagicus. Karakteristik tersebut antara lain nilai Target Strength (TS), nilai Echo Level (EL) dan Frekuensi deteksi. Berdasarkan penelitian ini, diketahui nilai TS dari P.pelagicus berkisar di nilai -40 hingga -45 dB, EL berkisar pada nilai 95 hingga 100 dB, dan Frekuensi deteksi berada pada frekuensi 110 kHz. Penelitian ini masih perlu dilanjutkan karena skala yang digunakan masih dalam taraf laboratorium.

PENGARUH RESPON GERAKAN TANKER PADA SISTEM TERTAMBAT CONVENTIONAL BUOY MOORING (CBM) TERHADAP VARIASI BEBAN LINGKUNGAN Yuni Ari Wibowo; Anas Noor Firdaus; Lulut Alfaris
Marlin : Marine and Fisheries Science Technology Journal Vol 3, No 1 (2022): (Februari 2022)
Publisher : Politeknik Kelautan dan Perikanan Pangandaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/marlin.V3.I1.2022.15-25

Perkembangan sistem transfer minyak dan gas lepas pantai terapung tidak bisa dilepaskan dari perkembangan sistem tambat untuk menjaga posisi bangunan apung dalam kondisi stasionkeeping. Respon gerakan dan tension tali tambat merupakan parameter penting yang digunakan dalam merancang konfigurasi sistem tali tambat. Sistem tali tambat yang biasa digunakan pada perairan dangkal adalah sistem Conventional buoy Mooring (CBM), selain kemudahan dalam proses instalasi dan perawatan, sistem ini juga relatif lebih murah jika dibandingkan dengan sistem point mooring yang dapat berputar mengikuti arah beban lingkungannya (weathervaning). Analisis numerik pada konfigurasi tertambat CBM dilakukan untuk mengidentifikasi respon gerakan bangunan apung akibat beban lingkungan secara collinear dan non-collinear. Simulasi time domain Cummins dilakukan untuk menyelesaikan persamaan gerak tanker dan sistem tambat secara simultan. Pada analisis yang dilakukan, didapatkan respon gerakan tanker pada kondisi pembebanan non-collinear lebih dominan pada gerakan surge, sway dan pitch sebesar 82%, 10% dan 12% secara berturut-turut. Sedangkan gerakan heave, roll dan yaw, respon gerakan lebih besar ditemukan pada pembebanan collinear sebesar 3%, 64% dan 17% secara berturut-turut. Berdasarkan analisis fast fourier transform (FFT) didapatkan spectral density gerakan horizontal (surge, sway dan yaw) memiliki dua puncak, puncak pertama pada frekuensi rendah (0.00-0,10 rad/s), dipengaruhi oleh frekuensi natural sistem tertambat yang beresonansi dengan gelombang orde-2 dan puncak kedua pada frekuensi 0.30 rad/s yang dipengaruhi oleh gelombang orde-1.The development of a floating offshore oil and gas transfer system cannot be separated from mooring system development to maintain the position of the floating structure in a stationary condition. Motion responses and mooring line tensions are crucial parameters used in mooring system configuration design. The configuration of mooring system commonly used in shallow waters is the Conventional Buoy Mooring (CBM). In addition to the ease of installation and maintenance, this system is also relatively cheaper than the point mooring system, which rotates in the direction of the environmental load (weathervaning). Numerical analysis on the CBM moored configuration was carried out to identify the motion responses of the floating structure due to collinear and non-collinear environmental load cases. Cummins time domain simulation was carried out to solve motion equation of the tanker and mooring system simultaneously. This analysis generated motion response of tanker under non-collinear loading conditions was significat in surge, sway and pitch motion of 82%, 10% and 12%, respectively. While the heave, roll and yaw motion, greater response motion were found in collinear of 3%, 64% and 17%, respectively. Based on the fast Fourier transform (FFT) analysis, it found the spectral density of horizontal motion (surge, sway and yaw) has two peaks, the first peak is at a low frequency (0.00-0.10 rad/s), influenced by the natural frequency of the moored system which resonates with the 2nd order wave and a second peak at a frequency of 0.30 rad/s which is influenced by a 1st order wave.

Pengembangan Water Quality Checker untuk Tambak Budidaya Pesisir : (Studi Kasus: Tambak Budidaya Pesisir Pangandaran) Anas Noor Firdaus; Muhammad Romdonul Hakim; Tiara Ilham
INSOLOGI: Jurnal Sains dan Teknologi Vol. 2 No. 2 (2023): April 2023
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v2i2.1840

Water Quality Checker is a water quality measuring device designed to use a microcontroller system and sensors as parameters for measuring the water quality. The aim is to facilitate the implementation of water quality monitoring from previously traditionally to using aids. The test method directly measures pH and salinity and experiments in collecting data. System workflow in tool design, Arduino orders sensors and sensor detection results are processed back to Arduino. The work results of the tool are calibrated with other standardized tools for pH and salinity values. The software used is limited to Arduino Uno and supporting devices and design applications for casing manufacturing, namely Solidwork. Using a pHE4502C sensor, a salinity sensor as a measuring tool, Arduino Uno as a microcontroller, and a LCD as a monitor that displays the value and status of the detected pH and traffic. By using the provisions that the pH value of coastal pond water is less than 6.5 which is acidic, more than 7.5 is alkaline, and the pH value is more than 6.5 and less than 7.5 which is neutral, at the time of testing it was obtained a pH value of 7.1 – 8.04 so that the solution is neutral and base. The results of the salinity sensor test for coastal pond water are 23.64 – 24.20 which indicates that this value is the normal value for brackish water salinity.

TSUNAMI HAZARD ZONE IN THE COASTAL OF PANGANDARAN REGENCY Anas Noor Firdaus; Lulut Alfaris; Putriara Tresa Fitira; Godwin Latuputty
Aurelia Journal Vol 5, No 1 (2023): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/aj.v5i1.12545

Pangandaran Regency is famous for its natural beauty and favorite tourist destination in West Java, but it also has the potential for earthquakes and tsunamis due to its proximity to the Indo-Australian plate subduction zone. Pangandaran has a history of the 7.7 magnitude earthquake with the tsunami in 2006, to anticipate it again a mapping model is needed related to the vulnerability of the tsunami disaster in Pangandaran in the form of a vulnerability map as well as conducting a survey of vulnerability locations on the coast of Pangandaran. The zoning method is described descriptively using satellite imagery and direct observation, satellite imagery data analyzed are data on slope, elevation, land use, distance from the river and distance from the coastline. The tsunami hazard along the coast of Pangandaran Regency is relatively different from one zone to another, because it is influenced by parameters of morphology, bathymetry and coastal topography. Indicators of coastal slope and bottom of coastal waters play an important role in the magnitude of the potential for a tsunami in a zone, the zoning results show that the Pangandaran coastal area may be directly affected by tsunami waves. The following are high-risk zones which are areas with low altitudes such as the sub-districts: Kertamukti, Ciparanti, Legokjawa, Cijulang, Parigi, Karangbenda, Cibenda, Sukaresik, Wonoharjo, Pananjung, Babakan and Bagolo. These sub-districts need to install signs of tsunami vulnerability in the event of an emergency, it is also necessary to conduct outreach and training on preparedness in the event such as an earthquake and natural signs related to a tsunami or post-tsunami.

RANCANG BANGUN MINI ROV DENGAN PENGGUNAAN PWM SPEED CONTROLLER MODULE SEBAGAI SISTEM KENDALI Arif Baswantara; Lulut Alfaris; Anas Noor Firdaus; Rikha Bramawanto; Batih Shendy Capri Hareva; Miranda Putri
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 15 No. 2 (2023): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v15i2.43466

Remotely Operated Vehicle (ROV) is an underwater vehicle or robot designed to able to move in the water. The increasing need for ROV in the future will require an ROV that is easy to build and operate. This study aims to design and build an ROV that is easy to manufacturing and easy to operate, which can be used for observation purposes in the future. The ROV designed with dimensions of length was 311,89 mm, width was 240 mm and height was 180 mm. ROV had three thruster motors with Pulse Width Modulation (PWM) Speed Controller Module as a control system. The ROV test were conducted motion tests and maneuvering tests, with the results shown that the ROV had an average forward speed of 0,26 m/s with the turning time was 6,3 s for 180° to portside, 6,7 s for 180° to starboard and time for circular motion was 8,2 s. The ROV’s motion test and maneuvering test showed good results, so that further development plans for this ROV can be carried out.

Rancang Bangun Model Uji Kapal General Cargo 8202 DWT untuk Pengujian Hidrostatis Yuni Ari Wibowo; Lulut Alfaris; Anas Noor Firdaus; Nunik Wijayanti
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Nomor 3, Edisi November 2023
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i3.31271

The development of Indonesia's maritime industry cannot be separated from the growth of sea transportation facilities, in this case, namely the growth of the fleet of ships. However, despite this growth, ship accidents are still a crucial issue. One of the causes is sinking caused by poor ship stability. Transfer of cargo on board from loading-unloading activities causes changes in the stability of the ship. In general, ship stability can be analyzed using a numerical approach with hydrostatic analysis, but to accommodate non-linear behavior, model-test experiments are needed. This research focuses on the design of the model test of the General Cargo 8202 DWT ship. The model-test was made with a 1:60 scale which has a model length (L) of 1.80m, breadth (B) of 0.3m, height (D) of 0.23m and a draft (T) of 0.12m. The model-test is designed by modeling the linesplane and then compiling it into a 3D model. Each station on the ship is patterned on wood, cut and arranged to form a ship pattern, then covered with multiplex and fiber. The design procedure for the model-test made refers to the International Towing Tank Conference (ITTC) standard. Pond testing was carried out to identify the draft and inclination of the ship at 3 loading conditions: lightweight, ballasted load and full load. Based on the test results, the model-test’s draft was in accordance with the principal dimensions and the inclination tended to be stable.

Co-Authors Arif Baswantara Astiyani, Wahyu Puji Batih Shendy Capri Hareva Godwin Latuputty Hakim, Muhammad Romdonul Indra Jaya Lulut Alfaris Miranda Putri Nunik Wijayanti Putriara Tresa Fitira Rikha Bramawanto Tiara Ilham Wibowo, Yuni Ari Yusfiandayani Yusfiandayani

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