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The fish feed thrower machine can disperse the feed over a wide coverage area in a short time. Throw distance is an important parameter that must be considered in a fish feed thrower machine. Distribution of feed from the fish feed thrower machine is due to the centrifugal force. This study aims to analyze the rotational speed (RPM) of the fish feed thrower machine 360° against throw distance and centrifugal force of the feed grains. Maximum results obtained for throw distance, throw speed and centrifugal force occur at RPM 600. Farthest throw distances from the feed codes 781-1, 781 and 782 are 2.20 m, 1.89 m and 1.66 m. Maximum throw speeds of the feed codes 781-1, 781 and 782 are 14,667 m/s, 12,583 m/s and 11,083 m/s. Maximum centrifugal force of the feed codes 781-1, 781 and 782 are 0.504x10-3 N, 2.711x10-3 N and 5.796x10-3 N. This shows that the centrifugal force on the feed grains causes the rotational speed (RPM) to affect the distance and speed of the feed.

The Strategic Areas of Teluk Bima and Teluk Saleh on Sumbawa Island have potential natural resources for regional economic development. Through the determination of the Teluk Bima and Teluk Saleh areas as National Strategic Areas, it is expected that economic growth in this region will develop significantly, so that regulations are needed from the aspects of planning, utilization and control of space to support various infrastructure activities and other sector activities in the context of realizing a safe, comfortable space, productive and sustainable. This study aims to analyze the suitability of space as a national strategic area. Data was collected through library research and searching for data and information on institutions related to the FGD approach. Space suitability analysis using Geographic Information System (GIS) approach. The results show that the Teluk Bima Bay and Teluk Saleh area (called Bima and Sumbawa Andalan) is worthy of being a national strategic area, with the leading sectors of tourism, industry and fisheries, so that it is important to prepare the Spatial Planning of the Strategic area.

The Teluk Awang Fishery Port (PP) is located in Mertak Village, Central Lombok Regency, which has the potential to develop as a center of economic growth with a fishery business base. It has a good geographical location because it is protected from waves coming from the Indian Ocean. Currently the Central Government, West Nusa Tenggara Provincial Government and Central Lombok Regency Government are jointly developing Awang Bay as a fishery business center by building a fishing port that can accommodate fishing vessels operating in WPPNRI 573 and 713. This study will look at fish resources ( SDI) in PP Teluk Awang uses the Participatory Action Research (PAR) method which actively involves all relevant parties. The results of the research show that the SDI that was landed in PP Teluk Awang during 2018-2020 as much as 3,559,483 kg was still dominated by pelagic and demersal fish, such as Cakalang fish (62.67%), Layang (10.77%), Tongkol ( 8.29%), Lemadang (6.34%), Tuna (5.42%), Baby Tuna (3.88%), Marlin (1.48%) and other fish (1.15%). The recorded fleet of ships is 27 units with a size of 8-25 Gross Tonnage (GT). The results of this study are expected to be a recommendation related to policies in managing the potential of SDI landed in PP Teluk Awang with the concept of sustainable fisheries.

Fish are cold-blooded animals that are widely used by humans. Fish are a diverse group of poikilothermic vertebrates with more than 27,000 species worldwide. A large number of fish species becomes a problem in distinguishing the types of fish. The purpose of this study was to create a fish type classification system based on the texture of artificial neural network-based fish imagery using K-Nearest Neighbors and Principal Component Analysis (PCA) algorithms. The data was taken through direct exploration and retrieved directly by researchers. The data only uses 3 types of fish as the object of further research conducted training and testing test data in the first, second, and third classes only one can not be recognized by the system, while the other data can be recognized by the percentage of success of 93% (Ninety-three percent).

The purpose of this research is to find out how the implementation of the use of forms of freedom on the high seas according to the 1982 Law of the Sea Convention (UNCLOS 1982) and how the exceptions to freedom on the high seas according to the 1982 Law of the Sea Convention (UNCLOS 1982). The research method used in this research is using normative legal research methods and it can be concluded that the regulation regarding the high seas is contained in Part VII Article 86 to Article 120 of the 1982 Sea Law Convention to take advantage of the high seas. State freedoms on the high seas are freedoms in accordance with article 87, namely freedom of navigation, flight, laying submarine cables and pipelines, freedom to build artificial islands and other installations, freedom to fish, and freedom to conduct scientific research. Every given freedom can be used by every country but every country is obliged to maintain and utilize the high seas for peaceful purposes for the survival of human life. In addition to providing freedom to use the high seas, the 1982 Law of the Sea Convention provides exceptions to this freedom. Where every country is free to use the high seas but is not allowed to take illegal actions or violate the law, both national law and International law, which in its application are often violated by countries in the world. There are several exceptions to the freedom of the high seas such as the prohibition of slavery, piracy, trafficking in narcotic drugs and psychotropic substances, instant pursuit, illicit broadcasting, and pollution of the marine environment. So every country, both coastal and non-coastal countries, is required to cooperate in eradicating all forms of abuse of freedom on the high seas.

Maritime or (Nautical literature) was ruling the period during the 18th century which was followed by 19th-century writers. These novels depict the effects on the environment, society and economy of the people. In this study, it is observed that the concept approach towards the Interdisciplinary theory with connection to the people's thoughts regarding the sea, their religious or holistic approaches, and the gender description given to describe the sea were correlated with some famous nautical novel with notable incidents or theories to prove that the attributes of plots might be different but the themes relating to such sea novels/aquatic novels are more or less similar to each other and they serve some standard settings and motifs on the whole. The study reveals that maritime novels where written in distinctive plots but the themes are more or less focused on masculinity (gender roles) and heroism, social hierarchies and the psychological and holistic transformation during their hard existence in the sea. Ethical approach, the symbolism of sea and the gender roles are used in this regard of research dealing with interdisciplinary theory.

Pertumbuhan penduduk yang diikuti dengan meningkatnya kegiatan industri, pertanian, dan pemukiman telah menggusur lahan budidaya sehingga dari tahun ketahun luasnya semakin berkurang. Disamping itu aktifitas penduduk akan mengakibatkan pencemaran berupa limbah organik maupun anorganik Inovasi teknologi diperlukan untuk mengantisipasi penurunan produksi tanaman dan ikan akibat penyusutan lahan budidaya dan penurunan kualitas perairan. Inovasi teknologi tersebut diharapkan mampu mengurangi limbah dan meningkatkan produktifitas persatuan luas lahan budidaya. Salah satu inovasi teknologi yang dapat diterapkan yaitu budidaya tanaman sayuran dan ikan yang terintegrasi melalui sistem akuaponik. Program Pengabdian Masyarakat dilaksanakan di desa Butuh, kecamatan Butuh, kabupaten Purworejo bertujuan untuk Mengenalkan, mempraktikkan dan memotivasi masyarakat untuk dapat melakukan teknologi akuaponik sayuran dan budidaya lele dalam ember , mengisi waktu luang serta mengembangkan kemampuan budidaya sayuran dan budidaya ikan lele selain itu juga sebagai bentuk pemanfaatan pekarangan rumah atau lahan sempit menjadi efisien dan menguntungkan serta potensi meningkatnya gizi keluarga. Mitra dalam pelaksanan pengabdian masyarakat ini adalah kelompok Wanita Tani Mandiri dengan anggota 16 orang. Metode yang digunakan adalah Education for Sustainable Development (EfSD) merupakan salah satu metode pengabdian kepada masyarakat yang berorientasi pada penyelesaian masalah pada lingkungan masyarakat. Metode EfSD menekankan pada 3 pilar yaitu ekonomi, ekologi atau lingkungan dan sosial. Program kegiatan yang dilaksanakan secara garis besar meliputi, 1) pemberdayaan masyarakat melalui penguatan kelembagaan dan peningkatan kualitas sumber daya manusia, 2) Penumbuhan dan pengembangan budidaya sayuran, dan perikanan berbasis akuaponik. Hasil pengabdian masyarakat ini berupa penguatan kelembagaan pada Kelompok Wanita Tani Mandiri mampu melaksanakan kegiatan program kegiatan dan sosialisasi dengan aktif. Dengan adanya pelatihan serta motivasi mampu menambah pengalaman dan wawasan anggota Kelompok Wanita Tani Mandiri dalam pengembangan budidaya sayuran dan ikan dalam ember.

Indonesia is the second-largest producer of plastic pollution in the world after China. Based on the data in 2018, there were about 1.29 million tonnes plastic waste end up in the ocean per annum. With that regard, Indonesia needs to be responsible for the negligence in doing the International obligation to prevent, reduce, and manage the pollution that affect marine environment. The purpose of this research is to observe Indonesia's commitment in reducing plastic pollution on marine environment by doing some legal approach. Therefore, this research conducted by normative juridical and using descriptive analysis. Data analysis that obtained is done through literature study. The conclusion of this research is that the commitment of Indonesian Government on preventing plastic waste in marine environment relatively needs to be improved. There are some of regulations which already targeted that has not established yet by Indonesian Government.

Renewable energy is derived from natural processes that are replenished constantly. Included in the definition is electricity and heat generated from solar, wind, ocean, hydropower, biomass, geothermal resources, and biofuels and hydrogen derived from renewable resources. The article discusses the sources of renewable energy in Uzbekistan.

The problems in the marine and coastal environment have aroused the attention of many countries in the world. According to [1], it is estimated that every year eight million tons of debris find their way into the world's oceans, thus disturbing aquatic and marine ecosystems. Particularly in the case of coastlines, many studies show that the majority of marine litter (60-80%) consists of plastic [2]. The objectives are to evaluate the critical issues in regards to marine environment waste monitoring and to track the development of technology used in the field of marine and coastal debris monitoring problems over the last two decades. The method of this research is by investigating the topic that is quite a lot raised as research related to coastal and marine waste and the distribution of technology implemented for coastal and marine debris. The results show that waste in coastal and marine areas is a problem that needs to be solved immediately. The data relating to the generation of waste flowing into the ocean is dynamic, moving every day, depending on the generation of the generated waste and its accumulation and drifting in the ocean. The large amount of information collected from higher views (such as satellite views) provides important insights for understanding and identifying plastic waste debris pollution and its movement. The conclusion: Regardless of the application, an integrated technical solution is required, which can be sensors, communication devices, data packet transmission from client devices to servers with appropriate application protocols, or a combination of several technologies