This study aims to analyze the reliability and performance of Rubber Tyred Gantry (RTG) cranes using the Mean Time To Repair (MTTR), Mean Time Between Failures (MTBF), and Inherent Availability (IA) methods. The MTTR method is used to measure the average time required for repairs, while MTBF calculates the average time between failures. Meanwhile, the IA method assesses the inherent availability of the equipment based on the previous two parameters. The results indicate that some RTG units experience high MTTR, such as RTG035-12, which recorded a repair time of 124.15 hours in January, and RTG035-13 with 441.23 hours in February. On the other hand, RTG035-19 demonstrated more stable performance with low MTTR in several months. In terms of MTBF, RTG035-16 recorded the lowest value of 0 hours in July, indicating significant disruptions, whereas RTG035-12 exhibited the best performance with the highest MTBF of 614 hours in December. The IA analysis revealed that some RTGs had low values, such as RTG035-13, which only reached 0.312 in February, while RTG035-19 maintained values above 0.95 throughout the year, demonstrating high reliability. This study provides insights into the performance of RTG equipment at the Semarang Container Terminal (TPKS) and emphasizes the need for effective maintenance strategies to enhance operational reliability and efficiency.

The flow of containers through Tanjung Emas Port is increasing, this can be seen from the growth of loading and unloading containers from year to year. The condition of the flow of containers is inseparable from the improvement of services at the Container Terminal of Tanjung Emas Port, Semarang through the provision of supporting facilities and infrastructure. With the growth of the container flow which is quite high, the condition of existing facilities, infrastructure and operating systems needs to be reviewed whether the operation is optimal or its performance is still possible to improve, or it is time to add infrastructure and facilities to anticipate future transportation demand. will come.
Smooth loading and unloading aims to improve good service in the activities and services of the loading and unloading process of containers according to operational standards. There are several factors that cause the smooth loading and unloading of containers, such as those related to the condition of loading and unloading equipment, the performance of human resources, operations and the environment. In this study, four research variables will be analyzed, namely loading and unloading equipment, human resources, operations and anticipation of natural factors as independent variables and loading and unloading smoothness as the dependent variable.
The purpose of this study was to analyze whether the positive influence both individually between the independent variables of loading and unloading equipment, human resources, operations, anticipation of natural factors on the dependent variable, namely the smoothness of loading and unloading. In this study, the object taken is the user of loading and unloading services at Tanjung Emas Port, Semarang. Sources of data include primary data and secondary data. The sample in this study was 100 respondents. The data analysis technique is multiple linear regression technique. Based on the results of research and multiple analysis, the following equations are generated:
 
Y= -0,504 + 0,264.X1 + 0,203.X2 + 0,323.X3 + 0,249.X4 + µ
 
From the results of the multiple regression study, it shows that the most dominant variable affecting the smooth loading and unloading is the operational variable with a regression coefficient of 0.323. . With the Adjusted R 2 test, a result of 0.644 or 64.4% was obtained. Simultaneously, the variables of loading and unloading equipment, human resources, operations and natural conditions factors had an effect of 64.4% on the smooth loading and unloading and 35.6% were influenced by research variables that were not detected in this study.

Kebakaran merupakan salah satu resiko yang dapat terjadi kapan saja dan dimana saja dalam setiap kegiatan pelayaran kapal laut. Kerugian yang diakibatkan oleh kebakaran kapal ini pun menimbulkan kerugian finansial yang cukup besar bahkan bisa sampai memakan korban jiwa yang tidak sedikit. Keputusan Menteri Tenaga Kerja No. 186/KepMen/1999 tentang unit penanggulangan kebakaran di tempat kerja, pasal 2 ayat 1 dan 2 mewajibkan kepada pengurus dan pengusaha untuk mencegah, mengurangi dan memadamkan kebakaran dan wajib memiliki unit penanggulangan kebakaran dengan tugas dan tanggung jawab masing-masing. Berdasarkan uraian tersebut maka diperlukanlah suatu sistem penanggulangan kebakaran di atas kapal yang mencakup sarana proteksi kebakaran, sarana pemadam kebakaran dan manajemen kebakaran di atas kapal. Variabel sarana proteksi kebakaran, sarana pemadam kebakaran dan manajemen kebakaran di atas kapal digunakan untuk mengetahui pengaruhnya terhadap sistem pemadam kebakaran pada kapal secara keseluruhan. Metode Penelitian yang dilakukan adalah analisis deskriptif kuantitatif dengan memanfaatkan software SPSS. Jumlah sampel yang digunakan sebanyak 42 orang dihitung menggunakan rumus slovin.  Hasil menunjukkan  bahwa  variabel  sistem proteksi kebakaran, peralatan pemadam kebakaran dan manajemen kebakaran secara parsial mempunyai pengaruh positif dan signifikan terhadap kesesuaian sistem pemadam kebakaran dengan kontribusi sebesar 64,4%, sedangkan faktor-faktor lain diluar variable penelitian ini yang berpengaruh sebesar 35,6%.

The community service program for planting mangrove trees at Tirang Beach, Semarang aims to increase public awareness of the importance of mangrove ecosystems and improve coastal environmental conditions. This program will be implemented through mangrove tree planting activities and counseling regarding the benefits of mangrove ecosystems for the environment. The method that will be used in this program is data collection through surveys to determine the level of public awareness regarding the importance of mangrove ecosystems and coastal environmental conditions. Furthermore, mangrove tree planting activities will be carried out together with the local community, involving experts in the environmental and fisheries fields. In addition, counseling will be carried out regarding the benefits of mangrove ecosystems for the environment, including as a place for various types of fish and wild animals to live, as well as protecting the coast from abrasion. Through this program, it is hoped that people will become more aware of the importance of preserving mangrove ecosystems and protecting the coastal environment. The expected results of this program are increasing public awareness of the importance of protecting the coastal environment and mangrove ecosystems, as well as increasing the number of mangrove trees on Tirang Beach. This program is also expected to be an example for other communities to preserve the environment and encourage the creation of a healthier and more sustainable environment.

Wilayah pesisir Kota Cilacap memiliki peran penting dalam peningkatan perekonomian warga Cilacap. Salah satunya adalah industri energi yang berada di wilayah pesisir Cilacap. PLTU Adipala berperan penting sebagai penyedia listrik untuk seluruh area Jawa Tengah. Karena lokasi PLTU yang berada di wilayah pesisir, menimbulkan berbagai macam permasalahan. Salah satu permasalahan yang terjadi adalah adanya sedimentasi di daerah dermaga dan alur pelayaran PLTU Adipala. Hal tersebut mengakibatkan terganggunya proses pengiriman batu bara. Selain itu adanya gelombang laut yang besar juga menyebabkan terganggunya laju kapal yang ingin menuju dan meninggkalkan area dermaga PLTU Adipala. Oleh karena itu perlu dilakukan kajian mengenai fenomena perubahan morfologi untuk mengetahui penyebab permasalahan dan solusi yang perlu diterapkan untuk mengatasinya. Penelitian yang akan dilakukan yaitu dengan melakukan simulasi pergerakan pola gelombang dan transport sedimen pada perairan di sekitar PLTU Adipala. Hasil pemodelan kondisi eksisting selama 1 bulan menunjukkan volume sedimen di kolam labuh saat musim barat sebesar 271.947 m3, sedangkan hasil pemodelan setelah adanya bangunan groin menunjukkan volume sedimen di kolam lauh PLTU sebesar 46.529 m3. Pada model yang disimulasikan pada musim timur selama 1 bulan dengan kondisi eksisting menunjukkan volume sedimen di kolam labuh PLTU sebesar 56.027 m3, sedangkan hasil pemodelan setelah adanya bangunan groin menunjukkan volume sedimen di kolam lauh PLTU sebesar 46.984 m3. Berdasarkan hasil dari simulasi model di kolam labuh PLTU menunjukkan pengurangan sejumlah volume sedimentasi karena adanya bangunan groin.