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Potensi Sumberdaya Udang Penaeid di Perairan Kepulauan Aru Bagian Timur Sub Wilayah Aru dan Sekitarnya

Jurnal Airaha Vol 4 No 1: Juni 2015
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

The utilization of the resources of shrimp penaeid in the eastern part of the archipelagic waters Aru and surrounding sub-region III, to estimate the abundance of shrimp by using the swept area method. The aim of research to determine the composition of species caught by shrimp trawlers using a double rig, Comparative production of penaeid shrimp catch in 2014 and in 2012. Potential sustainable and penaeid shrimp with Swept area method. Results Composition Penaeid Shrimp Catch in archipelagic waters Aru and surrounding sub-region (III). There are 9 types of penaeid shrimp with the amount of catches of 17 988 kg and is the most dominant type of Green Tiger Prawn (Penaeus semisulcatus), while the lowest amount was kind Banana Prawn (Penaeus merguensis). The results of a comparative test with Chi Square (?2) turns Ho rejected and Ha accepted, wherein ?2 count 7.40 is greater than ?2 tables 0.05 (3.84) and ?2 tables 0.01 (6.63), this means that there are differences in yield catches in 2012 And in 2014 was very significant. There is a decline in production is very significant from 2012 until 2014. The potential outcome in the waters of the sub region Aru Islands and surrounding waters -III which covers 13,000 km2, where willingness stock (B) 579.58 tons, sustainable potential (MSY) amounted to 576.58 tons / year while the Total Allowable Catch (TAC) amounted to 463.67 tons / year.

Analisis Pengaruh Perbedaan Hanging Ratio pada Jaring Insang (Gillnet) Terhadap Hasil Tangkapan Ikan

Jurnal Airaha Vol 3 No 1: Juni 2014
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

Penelitian bertujuan untuk mengetahui pengaruh perbedaan hanging ratio terhadap hasil tangkapan Gillnet. Penelitian dilakukan di Perairan Sorong, bulan Oktober 2013 - November 2013 menggunakan Gillnet  dengan hanging ratio 0,30, 0,40, dan 0,50 masing-masing sebanyak 2 piece. Ketiga tipe gillnet  dioperasikan secara bersama-sama. Hasil tangkapan selama penelitian dengan jumlah total pengambilan sampel 20 diperoleh 16 jenis spesies ikan yang didominasi oleh Belanak (Mugil cephalus) dengan jumlah dan total berat hasil tangkapannya adalah 166 ekor dan 125,60 kg, Daun Bamboo (Chorinemus spp) dengan jumlah dan total berat hasil tangkapannya adalah 146 ekor dan 131, 29 kg. Rataan jumlah ikan dan total berat hasil tangkapan per setting dari setiap jenis jaring insang memberikan indikasi adanya pengaruh nyata faktor hanging ratio. Rataan pada jumlah ikan Belanak (Mugil cephalus) per setting memperlihatkan kecenderungan menurun dengan meningkatnya hanging ratio. Sedangkan rataan jumlah ikan Bamboo (Chorinemus spp) terlihat maksimum untuk jaring dengan hanging ratio 0.40. Analisis sidik ragam menyimpulkan bahwa faktor tersebut signifikan pada taraf a = 0,05.

Struktur Komunitas Lamun di Perairan Distrik Salawati Utara Kabupaten Raja Ampat

Jurnal Airaha Vol 5 No 1: Juni 2016
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

This study aims to analyze seagrass community structure in North Salawati District, Raja Ampat. The scope of research is limited to identification of seagrass biodiversity, analyzing the overrune level of seagrass type covering the area, analyzing the densities types of seagrass important value index frequencies, water parameters and seagrass area. Research method was purposive sampling by using transects with dimensions of 1 x 1 meter with a total of seven stations along 100 meters of seagrass area. The acquired data was analyzed by using analysis of closure type, density type, frequency type, and important value index. Results of biodiversity identification showed that there are two families of seagrass,      Eight species of seagrass covering the area. The overrune of seagrass covering the area in both stations is very high. The area of coverage in the both areas is above 60% (> 60%), which classified as "healthy". The density of the species in both stations is very high which classified as medium dense. Temperature, pH, DO, salinity and turbidity are in the optimum level which classified as "good". The area which overrune by Seagrass in the waters of northern Salawati District is amounted to 5.7 km2.

Analisis Penggunaan Umpan pada Jaring Insang (Gillnet)

Jurnal Airaha Vol 2 No 1: Juni 2013
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Studi Eksperimen Pengaruh Penggunaan LPG sebagai Bahan Bakar pada Motor Bensin Pembakaran dalam 5,5 HP

Jurnal Airaha Vol 5 No 2: Desember 2016
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

Cadangan Bahan Bakar Minyak (BBM) khususnya bensin semakin berkurang dan tidak dapat diperbarui lagi sementara kebutuhan semakin bertambah dan akan berdampak pada krisis energi. Penelitian ini mengkaji penggunaan Liquefied Petroleum Gas (LPG) sebagai bahan bakar alternatif pengganti BBM jenis bensin untuk mengoperasikan motor bensin siklus empat langkah. Penelitian ini dilakukan dengan memodifikasi pada bagian karburator menjadi saluran masuk untuk gas LPG. Percobaan yang dilakukan meliputi uji operasional, uji ketahanan operasi yang dilakukan hingga 100 jam operasi dengan memberikan variasi jumlah bahan bakar yang diberikan sebesar 3 Psi dan 4 Psi. Hasil penelitian ini menunjukkan bahwa LPG jenis campuran dapat digunakan sebagai bahan bakar alternatif pengganti BBM jenis bensin 4 tak.

Studi Eksperimen untuk Kondisi Tanpa Beban pada Pengering Ikan Tipe Greenhouse Aktif

Jurnal Airaha Vol 6 No 2: Desember 2017
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

Among all available renewable energy sources, solar energy is the most abundant one and is available in both direct as well as indirect forms. People have applied solar energy as energy alternative in various fields. One of the field that use solar energy is drying. Drying is one of the best methods to preserve product like fish. Fish drying is practice to preserve the fish for longer duration. Entrapment of thermal energy from solar radiation may be the best option for fish drying by using closed drying (greenhouse). This study aims to determine the effect of inlet velocity of air to the thermal performance of greenhouse in the no-load conditions by considering several environmental parameters such as temperature, humidity and solar radiation. The half an hourly data for ambient temperature, outlet temperature, relative humidity of air, wind velocity, radiation intensity were taken inside and outside the greenhouse dryer. These data are used for the determination of thermal performance of active greenhouse dryer. From experimental results, it can be concluded that drying conditions with inlet velocity of air 0,8 m/s is more favorable than inlet velocity of air 1,6 m/s as obtained thermal efficiency of active greenhouse is higher.

Penangkapan Udang Penaeid Pasca Moratorium dan Pelarangan Kapal Trawl di Kabupaten Kaimana Propinsi Papau Barat

Jurnal Airaha Vol 6 No 2: Desember 2017
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

Penelitian ini mendiskripsikan penangkapan udang penaeid di Kabupaten Kaimana setelah moratorium dan Pelarangan Penangkapan ikan dengan Pukat Hela/Pukat Tarik untuk memberi gambaran dalam perencanaan pengelolaan perikanan udang yang berkelanjutan.  Metode yang digunakan dalam pengumpulan data penelitian adalah metode survei lapangan dengan mengikuti langsung kegiatan operasi penangkapan oleh nelayan, pengukuran alat tangkap dan wawancara yang dilakukan mulai bulan September – November 2017 kemudian diolah dan di bahas secara deskriptif.  Penangkapan udang penaeid di Kabupaten Kaimana setelah moratorium dan Pelarangan Penangkapan ikan dengan Pukat Hela/Pukat Tarik dilakukan oleh nelayan skala kecil yang berasal dari daerah Arguni dan Nelayan Kaimana  menggunakan trammel net dan jaring udang monofilament dengan menggunakan perahu katinting dan longboat motor tempel. Penangkapan udang dengan jaring udang PA monofilament dilakukan pada perairan pesisir pantai pada kedalamanan 1 – 5 meter dan penangkapan udang dengan trammel net dilakukan pada perairan pesisir pantai pada kedalamanan 5 – 20 m. Umumnya dasar perairan lumpur berpasir dengan warna perairan keruh abu-abu, dan sepanjang pantai terdapat hutan mangrove dengan hasil tangkapan didominasi udang banana. Musim penangkapan  terjadi pada bulan November – April untuk Perairan Arguni, dan Juni – Oktober di Perairan Teluk Kaimana.

Preliminary Hazard Analysis dan Fault Tree Analysis untuk Identifikasi Penyebab Kegagalan Sistem Pelumas Mesin Induk Kapal Penangkap Ikan

Jurnal Airaha Vol 7 No 02: Desember 2018
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

Most fishing vessels in Indonesia use diesel engines as their driving force. Diesel engines are mechanical machines where component contact is unavoidable, so a lubricating system is absolutely necessary to reduce the level of component damage that intersects. The decrease lubricating system capability has an impact on engine damage. The purpose of this study is to identify the causes of damage to the diesel engine lubricating system for fishing vessels, making it easier to make decisions in carrying out maintenance and repairing lubricant systems. The method for identifying each possible failure occurs using a Preliminary Hazard Analysis (PHA) and Fault Tree Analysis (FTA). PHA is a device to identify potential hazards that result in system failure, FTA is a device to identify the causes of system failure. FTA works by determining failures which are referred to as "top events", then the top event identifies the relationship of the factors causing various failure events with fault trees that use simple logic gates "and" and "or". The formation of an FTA can determine the factors causing failure with a minimum cut set. Based on the results of the analysis, there are three main causes of diesel engines failing because the lubricating system is the failure of lubricating system components namely internal leakage (screen lubricant + pressure alarm + manometer + officer), and (lubricating pump + pressure alarm + manometer + officer).