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All Journal Department of Naval Architecture SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Janaka : Jurnal Pengabdian Masyarakat TAAWUN: Jurnal Pengabdian Kepada Masyarakat
Aldias Bahatmaka
Universitas Negeri Semarang
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STUDI PERANCANGAN LAMBUNG SMALL WATERPLANE AREA TWIN HULL (SWATH) KAPAL PROTECTOR DENGAN SISTEM UNMANNED SURFACE VEHICLE (USV) UNTUK PERAIRAN AMBALAT Bahatmaka, Aldias; Hadi, Eko Sasmito; Mulyatno, Imam Pujo
Jurnal Teknik Perkapalan Vol 2, No 1 (2014): Januari
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (635.657 KB)

Abstract

Indonesia is a maritime country with potential natural resources . One is Ambalat Island. Ambalat is a sea block with an area covering 15,235 square kilometers located in the Sulawesi Sea and the Makassar Strait or near the extension of land between Malaysia Sabah and East Kalimantan, Indonesia. One point Ambalat keep mine in the potential reserves 764 million barrels of oil and 1.4 trillion cubic feet of gas . But the problem that occurs is increasingly rapine of natural quarry . Additionally, when Malaysia had initially claimed that Indonesian waters 70 miles from the border Sipadan island beach and Ligitan , Malaysia to expand its territory as far as 2 miles. Thereby reducing area of Indonesia. It happened due to the lack of maintenance of the maritime territory of the Republic of Indonesia (NKRI), especially in border areas like Ambalat Island. Based on this,it is necessary technology innovations especially warship design that could be a solution as alusista ( main instrument of defense systems ) Indonesian Navy in maintaining maritime Homeland.In this study, the chosen design is the type of hull SWATH (Small waterplane Area Twin Hull) with minimal cross-sectional area of the hull at sea level and maximize the stability of the sea at high speed so that the hull swath able to cover the weakness in the monohull and catamaran, hull which means it has the stability very well and is able to maneuver at high speeds. The operating system used is the Unmanned SurfacesVehicle (USV) or the ship without crew.This design results obtained swath protector hydrostatic analysis , stability , and seakeeping and the lines plan and general arrangement . By using the design method of optimization comparisons from ship references. Obtained the ship's main dimensions are Loa = 11,00 m , LWL = 8.976 m , B = 6.00 m , H = 3.80 m , T = 1.60 m . The swath Protector can sail trough Ambalat Island of 469 sea miles with a tank capacity FOT = 1,73 m3 , DOT = 2,40 m3 , LOT = 2,40 m3 . And for hydrostatic calculations , the ship has a displacement of 23.66 tons with block coefficient ( Cb ) = 0.22 and LCB position = 4.64 . Stability analysis results indicate that the vessel has a maximum GZ value occurs in the condition I followed the 2,722 m at 2,721 m the condition II , and III is 2.719 m . And the value of MG occurred in the 5,701 m , III conditions that led to the vessel having the fastest time to return to the upright position . Resistances Calculation results with analysis software at full speed V = 40 knots , has a resistances value is 64.14 kN and power is 1642.30 kW or 2359.94 HP with a slender body method . Based on the calculation of ship resistance , the chosen propulsion is a water jet machine as much as the two inboard diesel power respectively with each power is 1000 kW / 1340HP.
Pelatihan Desain Produk Elektronik untuk Eksplorasi Kompetensi Pemuda Karang Taruna di Rt09/Rw04 Kelurahan Bulustalan Semarang Rizqi Fitri Naryanto; Mera Kartika Delimayanti; Ari Dwi Nur Indriawan Musyono; Imanu Danar Herunandi; Aldias Bahatmaka
Janaka, Jurnal Pengabdian Masyarakat Vol 5 No 1 (2022): November 2022
Publisher : LP3M STAI Darussalam Krempyang Nganjuk

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29062/janaka.v5i1.606

Abstract

The Community Service Program carried out by the service team is to provide training to youth organizations, especially in RT09/RW09 Bulustalan Village, South Semarang District, Semarang City. Training in making electronic product designs in the form of posters, business cards, and calendars using Canva. The material's content has considered the needs of youth in today's internet era. Besides that, it can add value to the knowledge and skills of youth. From the results of the pre-test and post-test that have been carried out, it has been proven that this training is very beneficial for youth organization. The pre-test results show that less than 20% already know about the Canva module. Next, the post-test results show that more than 90% of the trainees are interested in and want to explore using Canva media. Positive responses have been given from the participants, showing that the training on making electronic product designs using Canva media benefits the participants.
PELATIHAN SOFTWARE RHINOCEROS DAN MAXSURF UNTUK MENINGKATKAN KOMPETENSI DESAIN 3D PENGRAJIN KAPAL TRADISIONAL DI PESISIR PEKALONGAN Aldias Bahatmaka; Ranu Iskandar; Rizki Setiadi; Deni Fajar Fitriyana; Imanu Danar Herunandi; Rizqi Fitri Naryanto; Hanif Hidayat; Abdurrahman Abdurrahman; Muhammad Yusuf Wibowo; Andi Abdullah Ghyferi; Rafif Dimas Pratama; Fiqri Fadillah Fahmi
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 7, No 3 (2023): September
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v7i3.17220

Abstract

ABSTRAKKota Pekalongan terletak di pantai utara Jawa Tengah dimana wilayah pesisir utara ini terdapat potensi yang dapat dikembangkan menjadi aset yang berharga bagi bangsa yaitu para pembuat kapal tradisional. Dalam pelaksanaannya, baik tipe ataupun bentuk kapal yang dibangun, berdasarkan pengalaman kapal-kapal yang pernah dibuat sebelumnya, tanpa melalui perhitungan dan penggambaran terlebih dahulu, sehingga dalam beberapa kasus terhadap pesanan kapal yang berbeda bentuknya, maka pengrajin ini akan mengalami kesulitan. Minimnya pengetahuan tentang gambar teknik juga menyebabkan para pengrajin kapal tradisional tidak dapat menggambar lambung kapal mereka. Hal ini menyebabkan perlunya sosialisasi mengenai teknologi perkapalan kepada pengrajin kapal di Kota Pekalongan terutama dibidang rancang bangun (design) dan konstruksi kapal agar terdapat standar baku mengenai konstruksi kapal kayu yang sesuai dengan standar yang ada seperti Biro Klasifikasi Indonesia (BKI). Pelatihan dilakukan dengan metode presentasi, demonstrasi, serta praktik langsung. Untuk mengukur pencapaian maka dilakukan pretest dan posttest yang dilakukan sebelum dan sesudah pelatihan. Hasil kuesioner menunjukkan adanya peningkatan pengetahuan peserta pelatihan desain kapal. Sebelum dilakukan pelatihan, rata-rata pengetahuan peserta sebesar 26% dalam memahami desain kapal dan 33% dalam memahami analisa tahanan kapal, kemudian mengalami peningkatan menjadi rata-rata sebesar 76% untuk pemahaman desain kapal dan 77% untuk analisa tahanan kapal setelah diberi pelatihan. Kata kunci: desain; pengrajin; kapal kayu; karakteristik kapal ABSTRACTThe city of Pekalongan is located on the north coast of Central Java where there is potential for this northern coastal region to be developed into a valuable asset for the nation, namely traditional shipbuilders. In practice, both the type and shape of the ship built, based on the experience of ships that have been made before, without going through calculations and drawings beforehand, so that in some cases orders for ships with different shapes, these craftsmen will experience difficulties. The lack of knowledge about technical drawings also causes traditional shipbuilders to be unable to draw their hulls. This causes the need for socialization regarding shipping technology to ship craftsmen in Pekalongan City, especially in the field of ship design and construction so that there are standard standards regarding wooden ship construction in accordance with existing standards such as the Indonesian Classification Bureau (BKI). The training is carried out using presentation methods, demonstrations, and hands-on practice. To measure achievement, a questionnaire was filled out before and after the training. The results of the questionnaire showed an increase in the knowledge of ship design training participants. Before the training, the average knowledge of the participants was 26% in understanding ship design and 33% in understanding ship resistance analysis, then increased to an average of 76% for understanding ship design and 77% for ship resistance analysis after being given training. Keywords: design; craftsmen; wooden ships; ship characteristics
Pelatihan Penggunaan Media Pembelajaran Tentang Budaya Keris Berbasis Virtual Reality di Sekolah Dasar Rizqi Fitri Naryanto; Mera Kartika Delimayanti; Ranu Iskandar; Didik Supriadi; Imam Sukoco; Aldias Bahatmaka; Warsiti Warsiti
TAAWUN Vol. 3 No. 02 (2023): TA'AWUN AUGUST 2023
Publisher : Pusat Penelitian Pengabdian Pada Masyarakat Sekolah Tinggi Ilmu Tarbiyah Al-Fattah Siman Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37850/taawun.v3i02.511

Abstract

The utilization of Virtual Reality (VR) technology for educational purposes, namely in instructing Indonesian culture, particularly the Keris culture, holds significant importance. This is due mainly to the limited dissemination of knowledge on Keris and traditional weaponry inside educational institutions, as they are not currently incorporated into the curriculum. The Universitas Negeri Semarang and Politeknik Negeri Jakarta teams have developed interactive learning media focusing on virtual reality (VR) technology. The primary objective of the virtual reality (VR) application is to provide a comprehensive exploration of Keris culture, intending to foster a deeper understanding and appreciation of Indonesia's rich cultural legacy among the younger generation, mainly elementary school pupils. The approach involves offering instructional sessions to students and educators, focusing on utilizing virtual reality (VR) technology as an educational instrument. Training activities were provided at Barusari 02 Elementary School in South Semarang. Considering technological accessibility is crucial to ensuring that all students can access educational materials without obstacles. The findings derived from administering pre- and post-assessments to primary school children indicate that Virtual Reality Technology has the potential to engender greater interest among pupils in acquainting themselves with Indonesian culture. Most participants, above 80%, expressed a strong positive inclination towards utilizing Virtual Reality (VR) Technology to acquire knowledge about various cultural aspects. By providing appropriate support and adopting a comprehensive approach, virtual reality (VR) has the potential to serve as an efficacious instrument for enhancing students' comprehension and admiration of Indonesian culture.
PENINGKATAN KETERAMPILAN GURU PRODUKTIF SMK DALAM PENDIDIKAN 4.0 MELALUI PELATIHAN PEMBUATAN DAN PUBLIKASI VIDEO PEMBELAJARAN DI YOUTUBE Hanif Hidayat; Sarwi Asri; Ranu Iskandar; Aldias Bahatmaka; Khoirul Huda; Panggah Bowo Leksono; Chandra Adi Winarko; Hanalinda Kubrus Arrijah
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 7, No 4 (2023): Desember (In Progress)
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v7i4.17827

Abstract

ABSTRAKPendidikan 4.0 merupakan paradigma pendidikan masa depan, dimana pembelajaran cybergogy yang diterapkan. Pembelajaran ini  memerlukan teknologi digital dan internet dalam penerapannya. Salah satu teknologi digital tersebut adalah video pembelajaran. Salah satu SMK Negeri di Kabupaten Tegal siap mendukung pendidikan 4.0 dengan menerapkan pembelajaran interaktif dengan menggunakan video. Tujuan dari pengabdian ini yaitu untuk meningkatkan keterampilan digital guru produktif SMK.. Ada 3 tahapan dalam pengabdian ini yaitu persiapan, pelaksanaan, dan evaluasi. Tahap persiapan dilakukan dengan (1) mengumpulkan informasi situasi di SMK, (2) mengatur waktu dan tempat pelatihan, dan (3) mempersiapkan alat dan bahan yang akan digunakan saat pelatihan, lembar kuesioner dan soal pretest & posttest. Tahap pelaksanaan menggunakan beberapa metode, yaitu ceramah, demonstrasi, dan praktik langsung. Evaluasi dilakukan dengan memberikan pretest dan posttest, mengisi kuesioner kebermanfaatan pengabdian, dan pengamatan selama proses pelatihan. Hasil pengabdian ini menunjukan bahwa pelatihan ini diadakan pada tanggal 27 Juli 2023 dengan jumlah peserta 15 guru dapat meningkatkan pengetahuan peserta pelatihan dari 56,00 menjadi 77,33 dari skor maksimal 100. Selama proses pelatihan peserta pelatihan termotivasi. Peserta pelatihan merasa sangat puas dengan pelatihan yang dilakukan. Kata kunci: pendidikan 4.0; SMK; video pembelajaran; youtube ABSTRACTEducation 4.0 is a future educational paradigm, where cybergogy learning is applied. This learning is not only assisted by digital technology but uses the internet in its use. One of these digital technologies is learning videos. One State Vocational School in Tegal Regency is ready to support education 4.0 by implementing learning using videos. The purpose of this service is to improve the productive digital skills of SMK teachers. There were 3 stages in this service, namely, preparation, implementation, and evaluation. The preparatory phase was carried out by (1) gathering information on the situation at the SMK, (2) arranging the time and place for the training, and (3) preparing the tools and materials to be used during the training and the pretest & posttest sheets. The implementation phase used several methods, namely lectures, demonstrations, and direct practice. Evaluation was carried out before, during and after the activity by providing pretest and posttest, observing during the training process, and assessing the performance of the trainees. The results of this service showed that this training held on July 27 2023 with a total of 15 teachers participating can increase the training participants' knowledge from 56.00 to 77.33 from a maximum score of 100. During the training process the training participants were motivated. The training participants were very satisfied with the training carried out.. keywords: education 4.0; learning video; vocational high school; youtube
Co-Authors Abdurrahman Abdurrahman Andi Abdullah Ghyferi Ari Dwi Nur Indriawan Musyono Chandra Adi Winarko Didik Supriadi Eko Sasmito Hadi Fiqri Fadillah Fahmi Fitriyana, Deni Fajar Hanalinda Kubrus Arrijah Hanif Hidayat Imam Pujo Mulyatno Imanu Danar Herunandi Iskandar, Ranu Khoirul Huda Mera Kartika Delimayanti Muhammad Yusuf Wibowo Panggah Bowo Leksono Rafif Dimas Pratama Rizki Setiadi Rizqi Fitri Naryanto Sarwi Asri Sukoco, Imam Warsiti Warsiti