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176 Research products for wave: jurnal ilmiah teknologi maritim
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Nurcholis;

    Vol 16 No 2

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Wave: Jurnal Ilmiah ...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Wave: Jurnal Ilmiah ...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Maulana, Fariz;

    Vol 16 No 2

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Jurnal Ilmiah Teknol...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Jurnal Ilmiah Teknol...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Suharso, Arif Rakhman; Hendarto, Ario; Sirait, Evi; Kumara, Rahindra Bayu; +1 Authors

    Potensiometer dapat digunakan sebagai sensor untuk mengukur derajat putaran kemudi dengan membaca nilai resistansinya untuk diubah ke dalam nilai digital manggunakan analog to digital coverter yang terdapat di arduino. ADC atau disebut juga dengan Analog to Digital Converter merupakan fitur yang di miliki oleh arduino sebagai mikrokontroler guna membaca sinyal analog kemudian di konversikan menjadi sinyal digital (Elgamar, 2018). Kemudi kapal harus memenuhi persyaratan-persyaratan yang diharuskan untuk kepentingan dan keselamatan serta sesuai yang diisyaratkan dalam SOLAS 74 aturan 29 Bab II mengenai perangkat kemudi. Perangkat kemudi utama pada saat kapal melaju dengan kecepatan ekonomis maksimum, harus dapat disimpangkan sebesar 35º ke kiri/ ke kanan dalam waktu 28 detik, dari posisi port 35 derajat ke starboard 35 derajat atau sebaliknya, saat putaran mesin maksimum dan beban maksimum dalam jangka waktu maksimum 28 detik (Yusim, 2021). Hasil pembacaan potensiometer yang sudah dikonversi menjadi digital dikirimkan ke komputer melalui komunikasi serial USB dengan software yang digunakan visual basic. File visual basic dalam komputer ini berbentuk file berextensi .exe yang sifatnya executable atau dengan kata lain dapat langsung digunakan. Potensiometer yang digunakan adalah potensio dengan resistansi 100 k ohm dan tegangan referensi 5 volt dicatu dari tegangan USB komputer, hasilnya dikonversi ke digital digunakan untuk menentukan berapa derajat kemudi kapal akan berbelok ke kanan (starboard side) atau ke kiri (port side).

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Jurnal Ilmiah Teknol...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Jurnal Ilmiah Teknol...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Hariyono, Hariyono; Aldo, Jefri;

    Riset ini bertujuan untuk menganalisa kegagalan struktur ladder pada Kapal Isap Produksi Timah 19 yang telah mengalami patah ladder mengakibatkan beberapa komponen dan peralatan ladder seperti cutter hilang di dasar laut, salah satu penyebabnya yaitu pengaruh model bracing yang dipasang pada konstruksi pondasi katrol ladder sehingga menimbulkan biaya yang sangat besar untuk perbaikan ladder yang patah. Riset dilaksanakan menggunakan Finite Element Analysis dengan pemodelan menggunakan bantuan software Ansys. Model ladder dibuat sesuai aktual dengan panjang ladder 59 m. Kemudian dibuat masing-masing model diagonal bracing dan x-bracing khusus pada konstruksi pondasi katrol. Beban yang bekerja pada ladder untuk 2 model sama yaitu berat pipa dan lumpur sebesar 1,42 x 105 N, berat cutter sebesar 0,57 x 105 N dan torsi cutter sebesar 0,67 x 108 Nmm. Hasil analisa menunjukkan bahwa tegangan maksimum terjadi pada komponen strut tepat dibawah pondasi katrol untuk model diagonal bracing sebesar 57,32 N/mm2 dibandingkan dengan model x-bracing sebesar 25,44 N/mm2. Hasil ini menunjukkan bahwa konstruksi brace yang dipasang pada area katrol ladder sangat mempengaruhi nilai tegangan sehingga untuk meminimalisir kegagalan struktur ladder khususnya pada area katrol sebaiknya menggunakan konstruksi x-bracing karena memiliki nilai tegangan minimum dibandingkan konstruksi diagonal bracing yang terpasang saat ini pada Kapal Isap Produksi.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Wave: Jurnal Ilmiah ...arrow_drop_down
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    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Jurnal Ilmiah Teknologi Maritim WAVE
    Article . 2023 . Peer-reviewed
    License: CC BY NC SA
    Data sources: Crossref
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Wave: Jurnal Ilmiah ...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      Jurnal Ilmiah Teknologi Maritim WAVE
      Article . 2023 . Peer-reviewed
      License: CC BY NC SA
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Woro Herningsih, Siwi; Amirullah; Anggeranika, Vidiana; Nurika, Yohanna;

    Kemampuan berkomunikasi dan penggunaan kode isyarat internasional merupakan kemampuan interaksi yang dimiliki oleh individu atau seseorang di atas kapal untuk dapat berinteraksi dan bersosialisasi dengan individu atau orang lain. Tujuan penelitian ini adalah untuk mengetahui pengaruh komunikasi berkomunikasi dan penggunaan kode isyarat internasional terhadap tingkat keselamatan pelayaran kapal. Pendekatan yang digunakan dalam penelitian ini adalah kuantitatif. Analisis data yang digunakan pendekatan struktural Equation Model (SEM) berbantuan aplikasi smart PLS. Responden dalam penelitian ini adalah 68 awak kapal yang ada di Pelabuhan Merak. Hasil penelitian menunjukkan bahwa terdapat pengaruh kemampuan berkomunikasi terhadap tingkat keselamatan pelayaran, selain itu kemampuan penggunaan kode internasional terhadap tingkat keselamatan.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Jurnal Ilmiah Teknol...arrow_drop_down
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    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Jurnal Ilmiah Teknologi Maritim WAVE
    Article . 2023 . Peer-reviewed
    License: CC BY NC SA
    Data sources: Crossref
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Jurnal Ilmiah Teknol...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      Jurnal Ilmiah Teknologi Maritim WAVE
      Article . 2023 . Peer-reviewed
      License: CC BY NC SA
      Data sources: Crossref
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Awwalin, Rodlitul; Marsudi, Sugeng; Khusniawati, Faulina;

    Kepulauan Kangean merupakan wilayah bagian dari Kabupaten Sumenep, Pulau Madura, Jawa Timur. Jumlah penduduk di Kepulauan Kangean berjumlah 116.946 jiwa pada tahun 2021, dengan tingkat kepadatan penduduk sebesar 1,397 orang per km2. Aktifitas perekonomian antar pulau, masyarakat secara umum menggunakan transportasi laut berupa kapal pelayaran rakyat (Pelra), kapal penyeberangan berukuran kecil dan kapal perintis. Pada penelitian ini dilakukan studi konseptual perencanaan fasilitas transportasi laut berupa waterbus yang bertujuan untuk meningkatkan kemudahan akses kegiatan ekonomi masyarakat kepulauan kangenan. Metode yang digunakan pada penelitian ini berupa studi lapangan untuk mengetahui pola operasi kapal serta menggunakan data kapal pembanding yang beroperasi di Kepulauan Kangean. Berdasarkan hasil studi lapangan diperoleh bahwa mayoritas kapal yang melayani pelayaran di kepulauan kangenan adalah kapal pelayaran rakyat. Hasil regresi linear diperoleh ukuran utama kapal Waterbus adalah L=15 m, B=4 m, H=1,71 m, T=0,86 m, GT=16,71 ton. Selanjutnya diperoleh pola operasi kapal Waterbus untuk Kepulauan Kangean yang terdiri dari dua titik, yaitu titik pertama di Pelabuhan Batugulok Kecamatan Arjasa ke pulau sekitarnya, dan titik kedua di Pelabuhan Sapeken Kecamatan Sapeken ke pulau sekitarnya.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Wave: Jurnal Ilmiah ...arrow_drop_down
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    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Jurnal Ilmiah Teknologi Maritim WAVE
    Article . 2022 . Peer-reviewed
    License: CC BY NC SA
    Data sources: Crossref
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      Jurnal Ilmiah Teknologi Maritim WAVE
      Article . 2022 . Peer-reviewed
      License: CC BY NC SA
      Data sources: Crossref
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Yasim, Ahmad; Rizal, Nandiko; Widodo, Widodo;

    Perkembangan energi terbarukan mengalami peningkatan pesat seiring menipisnya cadangan bahan bakar fosil. Arus laut adalah sumber energi terbarukan yang memiliki potensi besar di Indonesia namun didominasi oleh kecepatan arus rendah. Vertical Axial Tidal Current Turbine (VATCT) adalah teknologi yang cukup efektif mengkonversi energi arus laut rendah menjadi energi listrik. NACA 63(4)021 adalah jenis hidrofoil yang sedang trend digunakan karena dapat menghasilkan efisiensi yang lebih baik. Oleh karena itu, dilakukan studi numerik hidrofoil NACA 63(4)021 berdasarkan kondisi kecepatan arus rendah. Studi numerik menggunakan model 2D dengan variasi sudut serang dan initial condition Re 200.000. Dari hasil studi, diketahui nilai Cl maksimal 1,16 pada AoA 15?, sedangkan nilai Cd cukup rendah pada AoA antara 0? hingga 10?. Nilai Cl/Cd maksimal adalah 25.5 pada AoA 8?. Dengan demikian, direkomendasikan sudut ideal hidrofoil NACA 63(4)02 pada VATCT adalah 8? (untuk turbin fixed pitch) atau pada rentang sudut 5? hingga 10? (untuk turbin active-passive pitch).

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Jurnal Ilmiah Teknol...arrow_drop_down
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    Jurnal Ilmiah Teknologi Maritim WAVE
    Article . 2022 . Peer-reviewed
    License: CC BY NC SA
    Data sources: Crossref
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      Jurnal Ilmiah Teknologi Maritim WAVE
      Article . 2022 . Peer-reviewed
      License: CC BY NC SA
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    Authors: Maulana, Fariz;

    Vol 16 No 1

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Jurnal Ilmiah Teknol...arrow_drop_down
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    Authors: Nurcholis;

    Vol 16 No 1

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Jurnal Ilmiah Teknol...arrow_drop_down
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    Authors: Siswanti, Heni; Musta'in, Muhammad;

    Penggunaan plat sandwich pada struktur kapal semakin meluas. Steel based hybrid sandwich banyak digunakan sebagai alternatif pengganti plat baja berpenegar. Plat sandwich ini terdiri dari faceplate berupa baja dan core material berupa matriks polyurethane elastomer. Perbedaan karakteristik pada dua material penyusun plat sandwich tersebut menyebabkan beberapa permasalahan. Salah satu permasalahan yang mungkin terjadi adalah kerusakan retak pada core material, yang menyebabkan lepasnya faceplate dari core-nya. Hal ini terjadi karena core material yang berupa matriks polyurethane relatif getas (brittle), sehingga rentan mengalami kerusakan ketika terkena pembebanan lebih atau berulang. Pada penelitian ini dilakukan analisis stress dan deformasi yang terjadi pada plat sandwich struktur geladak kapal, yang memiliki kerusakan retak pada core yang menyebabkan lepasnya lapisan faceplate dari core materialnya. Kerusakan core ini diasumsikan merepresentasikan retak mode I pada mekanika kepecahan. Analisis dilakukan dengan metode elemen hingga dengan bantuan software komputer. Beberapa model dengan variasi panjang keretakan dianalisis, untuk melihat pengaruh panjang keretakan terhadap stress, deformasi dan faktor intensitas stress pada model tersebut. Serta dievaluasi nilai panjang retak minimal saat mulai terjadinya perambatan retak. Hasil analisis menunjukkan bahwa tegangan maksimum (von misses) mengalami kenaikan secara linear dan signifikan terhadap kenaikan panjang keretakan. Tegangan maksimum pada kondisi utuh terjadi pada ujung-ujung kondisi batas jepit (fixed), sementara pada model dengan kerusakan berada pada sisi yang tidak mengalami keretakan. Deformasi juga mengalami kenaikan yang linear dan signifikan seiring dengan kenaikan panjang keretakan. Posisi deformasi maksimum berada pada ujung retakan. Nilai critical stress intensity factor (KIC) pada model adalah 6,90 dan panjang retak gagal (af) adalah 12,2 mm. Artinya perambatan retak akan terjadi ketika panjang retak mencapai 12,2 mm.

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    Jurnal Ilmiah Teknologi Maritim WAVE
    Article . 2022 . Peer-reviewed
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      Jurnal Ilmiah Teknologi Maritim WAVE
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176 Research products for wave: jurnal ilmiah teknologi maritim
  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Nurcholis;

    Vol 16 No 2

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    Authors: Maulana, Fariz;

    Vol 16 No 2

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Jurnal Ilmiah Teknol...arrow_drop_down
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    Authors: Suharso, Arif Rakhman; Hendarto, Ario; Sirait, Evi; Kumara, Rahindra Bayu; +1 Authors

    Potensiometer dapat digunakan sebagai sensor untuk mengukur derajat putaran kemudi dengan membaca nilai resistansinya untuk diubah ke dalam nilai digital manggunakan analog to digital coverter yang terdapat di arduino. ADC atau disebut juga dengan Analog to Digital Converter merupakan fitur yang di miliki oleh arduino sebagai mikrokontroler guna membaca sinyal analog kemudian di konversikan menjadi sinyal digital (Elgamar, 2018). Kemudi kapal harus memenuhi persyaratan-persyaratan yang diharuskan untuk kepentingan dan keselamatan serta sesuai yang diisyaratkan dalam SOLAS 74 aturan 29 Bab II mengenai perangkat kemudi. Perangkat kemudi utama pada saat kapal melaju dengan kecepatan ekonomis maksimum, harus dapat disimpangkan sebesar 35º ke kiri/ ke kanan dalam waktu 28 detik, dari posisi port 35 derajat ke starboard 35 derajat atau sebaliknya, saat putaran mesin maksimum dan beban maksimum dalam jangka waktu maksimum 28 detik (Yusim, 2021). Hasil pembacaan potensiometer yang sudah dikonversi menjadi digital dikirimkan ke komputer melalui komunikasi serial USB dengan software yang digunakan visual basic. File visual basic dalam komputer ini berbentuk file berextensi .exe yang sifatnya executable atau dengan kata lain dapat langsung digunakan. Potensiometer yang digunakan adalah potensio dengan resistansi 100 k ohm dan tegangan referensi 5 volt dicatu dari tegangan USB komputer, hasilnya dikonversi ke digital digunakan untuk menentukan berapa derajat kemudi kapal akan berbelok ke kanan (starboard side) atau ke kiri (port side).

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    Authors: Hariyono, Hariyono; Aldo, Jefri;

    Riset ini bertujuan untuk menganalisa kegagalan struktur ladder pada Kapal Isap Produksi Timah 19 yang telah mengalami patah ladder mengakibatkan beberapa komponen dan peralatan ladder seperti cutter hilang di dasar laut, salah satu penyebabnya yaitu pengaruh model bracing yang dipasang pada konstruksi pondasi katrol ladder sehingga menimbulkan biaya yang sangat besar untuk perbaikan ladder yang patah. Riset dilaksanakan menggunakan Finite Element Analysis dengan pemodelan menggunakan bantuan software Ansys. Model ladder dibuat sesuai aktual dengan panjang ladder 59 m. Kemudian dibuat masing-masing model diagonal bracing dan x-bracing khusus pada konstruksi pondasi katrol. Beban yang bekerja pada ladder untuk 2 model sama yaitu berat pipa dan lumpur sebesar 1,42 x 105 N, berat cutter sebesar 0,57 x 105 N dan torsi cutter sebesar 0,67 x 108 Nmm. Hasil analisa menunjukkan bahwa tegangan maksimum terjadi pada komponen strut tepat dibawah pondasi katrol untuk model diagonal bracing sebesar 57,32 N/mm2 dibandingkan dengan model x-bracing sebesar 25,44 N/mm2. Hasil ini menunjukkan bahwa konstruksi brace yang dipasang pada area katrol ladder sangat mempengaruhi nilai tegangan sehingga untuk meminimalisir kegagalan struktur ladder khususnya pada area katrol sebaiknya menggunakan konstruksi x-bracing karena memiliki nilai tegangan minimum dibandingkan konstruksi diagonal bracing yang terpasang saat ini pada Kapal Isap Produksi.

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    Jurnal Ilmiah Teknologi Maritim WAVE
    Article . 2023 . Peer-reviewed
    License: CC BY NC SA
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      Jurnal Ilmiah Teknologi Maritim WAVE
      Article . 2023 . Peer-reviewed
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    Authors: Woro Herningsih, Siwi; Amirullah; Anggeranika, Vidiana; Nurika, Yohanna;

    Kemampuan berkomunikasi dan penggunaan kode isyarat internasional merupakan kemampuan interaksi yang dimiliki oleh individu atau seseorang di atas kapal untuk dapat berinteraksi dan bersosialisasi dengan individu atau orang lain. Tujuan penelitian ini adalah untuk mengetahui pengaruh komunikasi berkomunikasi dan penggunaan kode isyarat internasional terhadap tingkat keselamatan pelayaran kapal. Pendekatan yang digunakan dalam penelitian ini adalah kuantitatif. Analisis data yang digunakan pendekatan struktural Equation Model (SEM) berbantuan aplikasi smart PLS. Responden dalam penelitian ini adalah 68 awak kapal yang ada di Pelabuhan Merak. Hasil penelitian menunjukkan bahwa terdapat pengaruh kemampuan berkomunikasi terhadap tingkat keselamatan pelayaran, selain itu kemampuan penggunaan kode internasional terhadap tingkat keselamatan.

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    Jurnal Ilmiah Teknologi Maritim WAVE
    Article . 2023 . Peer-reviewed
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      Jurnal Ilmiah Teknologi Maritim WAVE
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    Authors: Awwalin, Rodlitul; Marsudi, Sugeng; Khusniawati, Faulina;

    Kepulauan Kangean merupakan wilayah bagian dari Kabupaten Sumenep, Pulau Madura, Jawa Timur. Jumlah penduduk di Kepulauan Kangean berjumlah 116.946 jiwa pada tahun 2021, dengan tingkat kepadatan penduduk sebesar 1,397 orang per km2. Aktifitas perekonomian antar pulau, masyarakat secara umum menggunakan transportasi laut berupa kapal pelayaran rakyat (Pelra), kapal penyeberangan berukuran kecil dan kapal perintis. Pada penelitian ini dilakukan studi konseptual perencanaan fasilitas transportasi laut berupa waterbus yang bertujuan untuk meningkatkan kemudahan akses kegiatan ekonomi masyarakat kepulauan kangenan. Metode yang digunakan pada penelitian ini berupa studi lapangan untuk mengetahui pola operasi kapal serta menggunakan data kapal pembanding yang beroperasi di Kepulauan Kangean. Berdasarkan hasil studi lapangan diperoleh bahwa mayoritas kapal yang melayani pelayaran di kepulauan kangenan adalah kapal pelayaran rakyat. Hasil regresi linear diperoleh ukuran utama kapal Waterbus adalah L=15 m, B=4 m, H=1,71 m, T=0,86 m, GT=16,71 ton. Selanjutnya diperoleh pola operasi kapal Waterbus untuk Kepulauan Kangean yang terdiri dari dua titik, yaitu titik pertama di Pelabuhan Batugulok Kecamatan Arjasa ke pulau sekitarnya, dan titik kedua di Pelabuhan Sapeken Kecamatan Sapeken ke pulau sekitarnya.

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    Jurnal Ilmiah Teknologi Maritim WAVE
    Article . 2022 . Peer-reviewed
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      Jurnal Ilmiah Teknologi Maritim WAVE
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    Authors: Yasim, Ahmad; Rizal, Nandiko; Widodo, Widodo;

    Perkembangan energi terbarukan mengalami peningkatan pesat seiring menipisnya cadangan bahan bakar fosil. Arus laut adalah sumber energi terbarukan yang memiliki potensi besar di Indonesia namun didominasi oleh kecepatan arus rendah. Vertical Axial Tidal Current Turbine (VATCT) adalah teknologi yang cukup efektif mengkonversi energi arus laut rendah menjadi energi listrik. NACA 63(4)021 adalah jenis hidrofoil yang sedang trend digunakan karena dapat menghasilkan efisiensi yang lebih baik. Oleh karena itu, dilakukan studi numerik hidrofoil NACA 63(4)021 berdasarkan kondisi kecepatan arus rendah. Studi numerik menggunakan model 2D dengan variasi sudut serang dan initial condition Re 200.000. Dari hasil studi, diketahui nilai Cl maksimal 1,16 pada AoA 15?, sedangkan nilai Cd cukup rendah pada AoA antara 0? hingga 10?. Nilai Cl/Cd maksimal adalah 25.5 pada AoA 8?. Dengan demikian, direkomendasikan sudut ideal hidrofoil NACA 63(4)02 pada VATCT adalah 8? (untuk turbin fixed pitch) atau pada rentang sudut 5? hingga 10? (untuk turbin active-passive pitch).

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    Jurnal Ilmiah Teknologi Maritim WAVE
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      Jurnal Ilmiah Teknologi Maritim WAVE
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