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Analisa Pengaruh Salinitas Dan Derajat Keasaman (pH) Air Laut Di Pelabuhan Jakarta Terhadap Laju Korosi Plat Baja Material Kapal Asman Ala; Yuni Mariah; Diah Zakiah; Deny Fitrial
Meteor STIP Marunda Vol 11 No 2 (2018): Desember
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) STIP Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36101/msm.v11i2.10

Abstract

Baja telah lama digunakan secara luas didalam industri kapal sebagai komponen plat utama didalam badan maupun lambung kapal. Disatu sisi material baja didalam kapal sangat rentan terhadap serangan korosi yang dapat menurunkan kualitas material kapal. Derajat keasaman atau pH adalah jumlah ion H+ yang terdapat di dalam sistem perairan atau biasa dikenal tingkat keasaman. Air laut umumnya mempunyai pH yang rendah (cenderung asam) sehingga menyebabkan korosi yang cepat di bagian bagian terbuka pada lambung kapal akibat cat lambung kapal yang tergores. penelitian ini dilakukan untuk mengetahui seberapa besar faktor salinitas dan derajat keasaman (pH) mempengaruhi laju korosi terhadap baja pada material kapal dan mengidentifikasi air laut yang laju korosinya tinggi di lihat dari pengaruh faktor derajat keasaman dan salinitas air laut. Hasil penelitian ini yaitu dapat mengkonfirmasi dan membuktikan pengaruh kadar salinitas dan pH air laut terhadap laju korosi. Semakin tinggi salinitas maupun pH, semakin tinggi juga laju korosinya.
Perceptions Of Cadets Djadajat Maritime Academy Towards Online Learning Methods During The COVID-19 Pandemic Yuni Mariah; Simson Katiandagho; Rizal Hasim; Suwarso
Nama Jurnal Akmi Vol 5 No 2 (2023): Jurnal Sitektransmar November 2023
Publisher : LPPM AKMI SUAKA BAHARI CIREBON

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51578/j.sitektransmar.v5i2.74

Abstract

The education sector is included in the impact of the COVID-19 pandemic, thus encouraging adaptation activities to prevent the spread of the outbreak face-to-face learning in class is abolished and all learning is transferred to the network. This change in learning methods is certainly very influential on cadets in receiving and understanding learning materials from lecturers. This research was conducted to describe the cadet’s perception of the Djadajat Maritime Academy on the effectiveness of online learning. This study's research design makes use of qualitative research. Data was collected by questionnaire and was analyzed from percentage of tabulations data. The results show that online learning according to the cadets' perception is considered to have many limitations and is still less effective
Overview Of Life Safety Of Fishing Fishermen In Cilincing North Jakarta Simson Katiandagho; Yuni Mariah; Nuradi; Entin Kartini
Nama Jurnal Akmi Vol 5 No 2 (2023): Jurnal Sitektransmar November 2023
Publisher : LPPM AKMI SUAKA BAHARI CIREBON

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51578/j.sitektransmar.v5i2.77

Abstract

Working on a fishing vessel is work that is classified as dangerous and is prone to causing work accidents. The causes of accidents on fishing vessels are low crew awareness regarding work safety in shipping and fishing activities, low mastery of navigation and fishing safety competencies, ships are not equipped with safety equipment as they should be. Bad weather such as big waves and lack of knowledge and skills in using work safety equipment. Data collection was carried out by direct observation and interviews with fishermen in Ciincing. This research aims to find out the picture of the mental safety of Cilincing fishermen when going to sea. The results of this research show that the types of accidents frequently experienced by Cilincing fishermen are slips, bumps, falls into the sea, leaking boats, engine propellers caught in rubbish, sinking boats and ship collisions. The causes of work accidents experienced by Cilincing fishermen are a lack of skills in avoiding safety, incomplete safety equipment, inadequate vessels and a lack of navigational aids. The level of knowledge of Cilincing fishing fishermen about life safety is quite good because they often receive safety training and life safety equipment at sea. There are some fishermen who rely on traditional knowledge about sea safety based on experience passed down from their ancestors and combining knowledge. knowledge gained through government outreach.