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Journal : Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut

STABILITAS STATIS KAPAL STATIC GEAR DI PALABUHANRATU (STUDI KASUS KM PSP 01) Adi Susanto; Budhi Hascaryo Iskandar; M. Imron
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol. 2 No. 1 (2011): Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (668.36 KB) | DOI: 10.29244/jmf.2.1.65-73

Abstract

This paper discusses on the static stability performance of a fishing vessel operated static fishing gear. A fishing boat named as KM PSP 01 was chosen as an object of this research. The objectives of this research were to analyze the static stability performance and work comfortability aboard the vessel. The result showed that KM PSP 01 was good enough for operating static fishing gear, the static stability of the boat is considered to be good with enough righting arm to upright the boat after roll to certain maximum angle. Hull of the boat considered as slim. Short rolling period i.e. 3.467 sec. considered as not so comfortable for working on deck but still safe in fishing operation.
EVALUASI DESAIN DAN STABILITAS KAPAL PENANGKAP IKAN DI PALABUHANRATU (STUDI KASUS KAPAL PSP 01) Fishing Vessel Design and Stability Evaluation in Palabuhanratu (Case Study of PSP 01 Training-Fishing Vessel) Adi Susanto; Budhi Hascaryo Iskandar; Mohammad Imron
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol. 2 No. 2 (2011): Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (324.698 KB) | DOI: 10.29244/jmf.2.2.213-221

Abstract

PSP 01 is a training-fishing vessel that was built in a traditional dock yard in Palabuhanratu, so it was not completed with design drawings and stability calculation. This paper discusses on determining the vessel’s suitability of design and stability condition followed by redesign of main dimension to obtain more optimal design. Simulation carried out in various load conditions and different vessel sizes to get the considerably ideal size of the vessel. The main dimension ratio and coefficient of fineness analysis showed that the vessel was appropriate as multipurpose vessel for fishing activities. Stability condition of the vessel either empty or in existing load condition met the criteria recommended by IMO with a maximum GZ was 0.33 m and an initial GM was 0.64 m. To improve the stability and fish hold capacity, the breadth and depth needed to be increased. The redesign resulted an alternative size ofmain dimensions which were LOA = 14.30 m; B = 5.14 m; D = 2.12 m.Key words: design, fishing vessel, multipurpose, stability
PENGGUNAAN BENTUK DAN POSISI CELAH PELOLOSAN PADA BUBU LIPAT KEPITING BAKAU (Shape and Position Escape Gap Application of Collapsible Mud Crab Trap) Adi Susanto; Ririn Irnawati
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol. 4 No. 2 (2013): Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (406.741 KB) | DOI: 10.29244/jmf.4.2.109-114

Abstract

ABSTRACTThe use of capture technology is not environmentally friendly and low public awareness to restore the Mud crab (Scylla sp.) that still poses a threat to small crab in natural resource conservation. The use of a gap for passage of the mud crab trap folding is one of the fishing technology innovations that will increase the size of crabs caught making it more environmentally friendly. This study aims to determine the size, shape and position of mounting an effective escape gap on collapsible traps for mud crabs that have not passed a decent catch. The method used was a laboratory experiment conducted on Fisheries Department UNTIRTA using escape gap is 2 boxes (50x50) mm and rectangular (60x36) mm mounted on the top and bottom position of the mouth traps. The results showed that the folding rectangular traps more effective mud crab that has not passed a decent escape capture by the percentage reaches 65%. Position mounting a more effective escape gap is at the bottom position of the mouth traps with crab escape frequency percentage of 54%.Key words: collapsible trap, escape gap, fishing technology, mud crab-------ABSTRAKPenggunaan teknologi penangkapan yang tidak ramah lingkungan dan rendahnya kesadaran masyarakat untuk mengembalikan kepiting bakau yang masih berukuran kecil memberikan ancaman terhadap kelestarian sumberdaya kepiting di alam. Penggunaan celah pelolosan pada bubu lipat kepiting bakau merupakan salah satu inovasi teknologi penangkapan yang akan meningkatkan ukuran kepiting yang tertangkap sehingga lebih ramah lingkungan. Penelitian ini bertujuan untuk menentukan ukuran, bentuk dan posisi pemasangan celah pelolosan yang efektif pada bubu lipat untuk meloloskan kepiting bakau yang belum layak tangkap. Metode penelitian yang digunakan adalah percobaan laboratorium yang dilakukan di Jurusan Perikanan UNTIRTA dengan menggunakan 2 celah pelolosan yaitu kotak (50x50) mm dan persegi panjang (60x36) mm yang dipasang pada posisi atas dan bawah mulut bubu. Hasil penelitian menunjukkan bahwa bubu lipat berbentuk persegi panjang lebih efektif meloloskan kepiting bakau yang belum layak tangkap dengan persentase pelolosan mencapai 65%. Posisi pemasangan celah pelolosan yang lebih efektif adalah pada posisi bawah mulut bubu dengan persentase pelolosan mencapai 54%.Kata kunci: bubu lipat, celah pelolosan, teknologi penangkapan, kepiting bakau
RESPONS DAN ADAPTASI IKAN TERI (Stolephorus sp.) TERHADAP LAMPU LIGHT EMITTING DIODE (LED) (Response and Adaptation of Anchovy (Stolephorus sp.) to Light Emitting Diode (LED) Lamp) Adi Susanto; Aristi Dian Purnama Fitri; Yuhelsa Putra; Heri Susanto; Tuti Alawiyah
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol. 8 No. 1 (2017): Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (335.422 KB) | DOI: 10.29244/jmf.8.1.39-49

Abstract

ABSTRACTInnovation of LED lamp are encouraged the research and development to obtain effective and eco-friendly fishing lamp. However, information about response, behaviour and retina adaptation of main target species to LED light are still limited. Meanwhile, this information is a key to determining intensity of effective LED light for fishing operation. The aims of this study are to determine response and retina adaptation of anchovy (Stolephorus sp.) to different LED colour. This research was performed to the anchovies with total length 4.80-6.10 cm, which were acclimated in the fish tank. Fish response was observed visually and recorded by video camera. Retina adaptation was analysed by using histology method through pigment and cone index at light zone respectively. The results showed the fish response to white LED 3.4 times was faster than blue LED. However times duration of anchovy at the lighting area was 1.8 times longer in the area of blue lighting. The anchovies were more responsive to white LED (p value= 0.0033) with the average number of fish was 45 individuals. White LED with illumination between 42-96 lux was the optimal illumination for fishing operation which can reach the highest cone index about 64-73%.Keywords: cone index, effectiveness, fishing, illuminationABSTRAKPenemuan lampu LED mendorong berkembangnya penelitian untuk menghasilkan fishing lamp yang lebih efektif dan ramah lingkungan. Namun informasi tentang respons, tingkah laku dan adaptasi retina mata ikan target tangkapan terhadap cahaya lampu LED masih terbatas. Pada dasarnya, informasi tersebut menjadi kunci dalam penentuan intensitas cahaya lampu LED yang efektif untuk penangkapan ikan. Penelitian ini bertujuan untuk menentukan respons dan adaptasi retina mata ikan teri (Stolephorus sp.) terhadap lampu LED dengan warna berbeda. Penelitian menggunakan ikan teri dengan panjang total antara 4,80-6,10 cm yang telah melalui proses aklimatisasi dalam bak penampungan. Pengamatan terhadap respons ikan teri dilakukan secara visual dan direkam dengan video kamera. Adaptasi retina mata ikan teri diamati berdasarkan hasil histologi dengan melihat nilai indeks pigmen dan indeks kon pada masing-masing zona pencahayaan. Hasil penelitian menunjukkan bahwa ikan teri 3,4 kali lebih cepat merespons lampu LED putih dibandingkan terhadap lampu LED biru. Namun ikan teri bertahan 1,8 kali lebih lama di area pencahayaan warna biru. Ikan teri lebih memberikan respons yang lebih baik pada LED putih (p value= 0,0033) dengan rata-rata jumlah ikan yang berkumpul di area pencahayaan sebanyak 45 ekor. Lampu LED warna putih dengan iluminasi cahaya antara 42-96 lux merupakan lampu paling ideal untuk penangkapan teri karena menghasilkan adaptasi sel kon paling tinggi dengan indeks kon antara 64-73%.Kata kunci:  indeks kon, efektivitas, penangkapan, iluminasi
PENENTUAN WARNA DAN INTENSITAS LAMPU LIGHT EMIITTING DIODE (LED) YANG OPTIMUM PADA PENANGKAPAN IKAN SELAR KUNING (SELAROIDES LEPTOLEPIS) UNTUK PERIKANAN BAGAN TANCAP Adi Susanto; Mulyono S. Baskoro; Sugeng Hari Wisudo; Mochammad Riyanto; Fis Purwangka
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol. 9 No. 2 (2018): Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (777.959 KB) | DOI: 10.29244/jmf.9.2.145-155

Abstract

ABSTRACTFishing activity using light emitting diode (LED) on a fixed lift net in Banten Bay is equipped using blue and white LED as its attractor. The colour and intensity of the lighting affects the successful capture of the lift nets. The colour selection is influenced by the interaction of the fish as the target. The objective of this study is to determine the optimum colour and intensity for Yellowstripe Scad (Selaroides leptolepis) based on their behavioural response and light adaptation to different colours of green and white at three different intensities which are low (1.53 x 10-5 – 2.42 x 10-5 W/cm²), medium (5.39 x 10-5 – 7.60 x 10-5 W/cm²), and high (9.03 x 10-5 – 9.42 x 10-5 W/cm²). The behavioural response of the fish was conducted using a tank experiment to measure the preferences zone, the nearest neighbour distance (NND), and behavioural response pattern for different colours and light intensity.  Histological approach for each experimental light colour and intensity was used to investigate the retinal adaptations. The results showed that the schooling position of fish was dominant found in the bright zone (67%) for all colours and intensities. The average NND showed the tendency to gradually decrease with the increased light intensity. While, the cell cone index and swimming speed of fish were slightly increased with increasing intensity. The highest light adaptation was found in white LED at high intensity about 97.52%. The schooling pattern in the green LED indicated that the fish gradually swam closely and stable regularly to the neighbour with increasing light intensity. However, the fish swam widely and randomly in accordance to the increased white LED intensity. This information suggests that the green LED may be regarded as an excellent fishing light to control the behaviour in order to harvest the yellow stripe scad in lift net fishing.Keywords: colour, lift net, light, yellowstripe scad ABSTRAKEfisiensi aktivitas penangkapan ikan dengan menggunakan bagan tancap sangat ditentukan oleh penggunaan cahaya sebagai atraktornya. Ketepatan warna dan intensitas cahaya sangat menentukan keberhasilan operasional bagan tancap.  Penetapan warna dan intensitas cahaya yang tepat sangat dipengaruhi oleh respon yang dihasilkan oleh ikan target. Oleh karena itu, penelitian ini bertujuan untuk menentukan warna dan intensitas cahaya lampu LED yang optimum untuk penangkapan ikan selar (Selaroides leptolepis) berdasarkan respons tingkah laku dan adaptasinya terhadap warna dan intensitas cahaya yang berbeda. Penelitian dilakukan secara eksperimental di perairan Teluk Banten dengan target penangkapan adalah ikan selar (Selaroides leptolepis). Penelitian dilakukan dengan menggunakan dua kelompok perlakuan yaitu warna dan intensitas cahaya. Perlakuan warna adalah dengan menggunakan lampu LED berwarna hijau dan putih. Adapun perlakuan intensitas cahaya adalah dengan menggunakan tiga intensitas cahaya yaitu intensitas rendah 1,53 x 10-5 – 2,42 x 10-5 W/cm²; sedang 5,39 x 10-5 – 7,60 x 10-5 W/cm²; tinggi 9,03 x 10-5 – 9,42 x 10-5 W/cm². Penelitian dilakukan dengan melakukan pengamatan terhadap respon ikan target dari famili Engraulidae dan Carangidae. Pengamatan respons tingkah laku dilakukan pada bak pengamatan untuk menentukan zona preferensi, nearest neighbor distance (NND) dan pola tingkah laku ikan terhadap warna dan intensitas berbeda. Adaptasi retina dianalisis secara histologi berdasarkan warna dan intensitas yang berbeda. Berdasarkan hasil penelitian posisi schooling ikan dominan berada pada zona terang (67%) pada seluruh warna dan intensitas lampu LED. Nilai NND cenderung turun seiring dengan peningkatan intensitas cahaya, sedangkan indeks kon dan kecepatan renang semakin tinggi dengan penambahan intensitas cahaya yang diberikan. Nilai adaptasi tertinggi diperoleh pada penggunaan lampu LED putih dengan intensitas tinggi sebesar 97,52%. Pola tingkah laku ikan pada LED hijau semakin teratur dengan jarak semakin dekat seiring meningkatnya intensitas. Namun pola renang ikan cenderung acak dan semakin jauh pada LED putih. Hasil penelitian mengindikasikan bahwa LED hijau lebih optimum untuk digunakan sebagai lampu pengumpul, pengkonsentrasi dan hauling pada penangkapan ikan selar dengan bagan tancap.Kata kunci: bagan, cahaya, warna, ikan selar (Selaroides leptolepis)