Operation ballast water of commercial vessels in Port of Tanjung Emas Semarang

Abstract

Abstract. The commercial vessel uses sea water to stabilty a vessel when the vessel is not loading a cargo. The water stabilized for the vessel is known as ballast water. The activity of loading the ballast water for the ship from origin port and dissposal to the distination port has caused impact on spreading the unidenfied organism the local port. Aim of the study to determine disposal value of water ballast either from a foreign merchant vessel or domestic merchant vessel so that Port of Tanjung Emas Semarang (PTES) is able to determine a policy on ballast administration from merchant vessel include a data of Arrival and Departure Report of the Vessels (ADRV) documents for the last five years (2009)(2010)(2011)(2012)(2013)(2014). Disposal ballast water of domestic vessel to PTES is average about 37,036 m³ and increased by 76.68% in a year. Yearly ballast water disposed from the foreign commercial vessels has reached 576.045 m3 for the last 5 years. The increasing of ballast water is about 122.19%. Level of vunerability on the PTES waters is due to ballast water dissposal caused mainly from foreign commercial vessels. The PTES administration should provide water reservoir and and water ballast treatment of commercial vessels which has 51,090 m³/per month or 81,744 kl/month.

Development dynamic compliance cost model for implementation of ballast water management convention: shipowner perspective

“…This alternative can be more efficient and cost-effective for shipowners because it eliminates the cost of onboard installation and maintenance [12]. Some research has analyzed potential opportunities from this alternative as port service products [13]. Studies about reception facilities are expanding because it is low cost and considered easy to oversee implementing this convention [14].…”

Profiling of Seawater Bacterial Diversity in Tanjung Mas Port Using 16S rRNA eDNA Metabarcoding and Next-Generation Sequencing (NGS)

“…The environmental characteristics of Tanjung Mas Port, shaped by a dynamic interplay of natural and anthropogenic factors, underscore the significance of investigating microbial communities in this setting (Tjahjono et al, 2018). Previous research has highlighted the vulnerability of port environments to the establishment of non-indigenous species, potentially impacting ecosystem functions and local biodiversity (El et al, 2022).…”