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HANG-IN RATIO GILLNET DASAR DAN PENGARUHNYA TERHADAP KARAKTERISTIK HASIL TANGKAPAN LOBSTER (Panulirus SPP.) DI PALABUHANRATU JAWA BARAT (Hang-in Ratio Effect of Bottom Gillnet on Characteristic of Lobster (Panulirus spp.) in the Palabuhanratu, West Java) Liya Tri Khikmawati; Sulaeman Martasuganda; Fedi Alfiadi Sondita
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol. 8 No. 2 (2017): Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut
Publisher : Bogor Agricultural University

ABSTRACTHang-in ratio (HR) will determine the characteristics of lobster caught by bottom gillnet, e.g number, size (weight and length) and quality. Higher hang-in ratio means more net material needed per length unit to develop a set of bottom gillnet.Â At the same time, higher hang-in ratio may increase the probability of lobster being entangled, so it can decrease the quality of the catches. The purpose of this study was to determine the optimum design of bottom gillnet in Palabuhanratu, West Java by considering the effect of different hang-in ratio (52%; 41% and 29%) on the characteristics of lobster caught, easier of releasing the catches from the net, and the material needed. A field work was carried out to perform an experimental fishing consisted of 23 fishing trips during October to November 2016. Statistical tests did not show any effect of the hang-in ratio. Based on scoring method, the best hang-in ratio is 29% due to capture the number of types of catches at least, easier of releasing catches from the net and fewest material needed.Keywords: bottom gillnet, hang-in ratio, lobster, PalabuhanratuABSTRAKPenggunaan hang-in ratio (HR) akan berpengaruh terhadap karakteristik hasil tangkapan lobster yang ditangkap dengan jaring insang dasar, seperti: jumlah, berat, panjang dan kualitas (kelengkapan tubuh). Penggunaan hang-in ratio yang besar akan meningkatkan penggunaan bahan atau mata jaring persatuan panjang dalam pembuatan satu unit jaring insang dasar. Penggunaan hang-in ratio yang besar pada jaring mengakibatkan semakin sulit lobster dilepaskan dari puntalan jaring karena tingkat kekenduran jaring yang tinggi. Jika tidak berhati-hati saat melepaskan lobster dari puntalan jaring dapat mematahkan bagian tubuh lobster (menurunkan kualitas hasil tangkapan). Tujuan penelitian adalah menentukan desain terbaik jaring insang dasar dengan melihat perbedaan hasil tangkapan, kemudahan melepaskan hasil tangkapan dari jaring dan penggunaan bahan jaring dari hang-in ratio yang berbeda, yaitu (52%, 41% dan 29%) di Palabuhanratu, Jawa Barat. Penelitian eksperimen ini dilaksanakan pada bulan Oktober sampai November 2016 dengan 23 kali trip penangkapan. Uji statistik penelitian menunjukkan bahwa dari ketiga jenis hang-in ratiotidak memberikan pengaruh yang signifikan terhadap karakteristik hasil tangkapan lobster. Namun, berdasarkan skoring HR terbaik yang digunakan pada jaring adalah 29% karena menangkap jumlah jenis hasil tangkapan paling sedikit, lebih mudah melepaskan hasil tangkapan dari jaring, membutuhkan bahan jaring paling sedikit.Kata kunci: Â jaring insang dasar, hang-in ratio, lobster, Palabuhanratu

Technical Design of Danish Seine on North Java Waters Suparman Sasmita; Sulaeman Martasuganda; Ari Purbayanto
Jurnal Perikanan dan Kelautan Vol 2, No 2 (2012)
Publisher : JURNAL PERIKANAN DAN KELAUTAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jpk.v2i2.24

Cantrang (danish seine) is the most fishing gear used by fisheries along the coast of north java waters. The Ministry of Marine and Fisheries Affair of fishing gears regulation number 02/MEN/2011, cantrang operation areas more than areas 2 or 3 miles. They are using various size and design construction in each location. This paper would be descripting the design and construction of cantrang and comparing with Indonesian Standard (SNI) 01-7236-2006. The comparative value of net wing from Tegal more long than total length of net, circumference of mouth net cantrang Rembang approximately 60,84 meters more large than total length. The panel of webbing cantrang from Tegal has appropriate standar. Fishing ground of cantrangs are spread in north java waters approximately 30 – 60 meters. The operation of cantrang is all of year every day, especially when the wind condition from the east to the west areas, and sometimes they are operation in coastal area. Considering of comparation data, design and construction of fishing gear as cantrang from Brondong and Rembang are not related with SNI 01-7236-2006.Keyword: cantrang, danish seine, design, construction, webbing

Trammel net design engineering for operation with the sweeping method (Ciker net) Zainal Wassahua; Sulaeman Martasuganda; Mulyono Sumitro Baskoro; Muhammad Fedi Alfiadi Sondita
Depik Vol 10, No 1 (2021): April 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

The active operation of a trammel net by a sweeping technique is commonly used by fishermen in Cilacap, which are often referred as ciker nets. They are operated by lowering the net in a straight line and pulling the tail end from a ship moving in a full circle, while the other end functions as a circular axis. The effect of active operation allows for changes in performance with time, such as easy lifting or less buoyancy, and the unstable display of gears. This makes it necessary to perform design engineering, especially on buoys, sinkers, and high nets. However, the suitable quantity of these components for ciker net has never been ascertained. Calculations about how many buoys, sinkers, and net height to add need to be done to enhance ciker net construction for active operation. This research aimed to determine the optimum configuration of buoys, sinkers, and net height, and determine the engineering design of ciker nets based on the optimum ratio of buoyancy force to the sinking force of the trammel net. Therefore, the parameters measured include hanging ratio, stretched net length, buoyancy force, and sinking force. The results showed that the optimum configuration of buoys, sinkers, and net height was 59 pieces, 341 pieces, and 1.5 m respectively. Changes in the design of ciker nets, especially in the three components that affect the addition of buoyancy and sinking force ratio were based on the comparison of the trammel nets which was 1:5 greater than the design owned by fishermen at 1:4.Keywords:Bouyancy forceSinking forceCiker netTrammel netShrimp

Trammel net design engineering for operation with the sweeping method (Ciker net) Zainal Wassahua; Sulaeman Martasuganda; Mulyono Sumitro Baskoro; Muhammad Fedi Alfiadi Sondita
Depik Vol 10, No 1 (2021): April 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.10.1.18219

The active operation of a trammel net by a sweeping technique is commonly used by fishermen in Cilacap, which are often referred as ciker nets. They are operated by lowering the net in a straight line and pulling the tail end from a ship moving in a full circle, while the other end functions as a circular axis. The effect of active operation allows for changes in performance with time, such as easy lifting or less buoyancy, and the unstable display of gears. This makes it necessary to perform design engineering, especially on buoys, sinkers, and high nets. However, the suitable quantity of these components for ciker net has never been ascertained. Calculations about how many buoys, sinkers, and net height to add need to be done to enhance ciker net construction for active operation. This research aimed to determine the optimum configuration of buoys, sinkers, and net height, and determine the engineering design of ciker nets based on the optimum ratio of buoyancy force to the sinking force of the trammel net. Therefore, the parameters measured include hanging ratio, stretched net length, buoyancy force, and sinking force. The results showed that the optimum configuration of buoys, sinkers, and net height was 59 pieces, 341 pieces, and 1.5 m respectively. Changes in the design of ciker nets, especially in the three components that affect the addition of buoyancy and sinking force ratio were based on the comparison of the trammel nets which was 1:5 greater than the design owned by fishermen at 1:4.Keywords:Bouyancy forceSinking forceCiker netTrammel netShrimp

Trammel net design engineering for operation with the sweeping method (Ciker net) Zainal Wassahua; Sulaeman Martasuganda; Mulyono Sumitro Baskoro; Muhammad Fedi Alfiadi Sondita
Depik Vol 10, No 1 (2021): April 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.10.1.18219

The active operation of a trammel net by a sweeping technique is commonly used by fishermen in Cilacap, which are often referred as ciker nets. They are operated by lowering the net in a straight line and pulling the tail end from a ship moving in a full circle, while the other end functions as a circular axis. The effect of active operation allows for changes in performance with time, such as easy lifting or less buoyancy, and the unstable display of gears. This makes it necessary to perform design engineering, especially on buoys, sinkers, and high nets. However, the suitable quantity of these components for ciker net has never been ascertained. Calculations about how many buoys, sinkers, and net height to add need to be done to enhance ciker net construction for active operation. This research aimed to determine the optimum configuration of buoys, sinkers, and net height, and determine the engineering design of ciker nets based on the optimum ratio of buoyancy force to the sinking force of the trammel net. Therefore, the parameters measured include hanging ratio, stretched net length, buoyancy force, and sinking force. The results showed that the optimum configuration of buoys, sinkers, and net height was 59 pieces, 341 pieces, and 1.5 m respectively. Changes in the design of ciker nets, especially in the three components that affect the addition of buoyancy and sinking force ratio were based on the comparison of the trammel nets which was 1:5 greater than the design owned by fishermen at 1:4.Keywords:Bouyancy forceSinking forceCiker netTrammel netShrimp

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