The maritime industry is crucial for global trade, but it also significantly impacts the marine environment, particularly through sewage pollution. This study assesses the quality of ship crew members in sewage pollution prevention practices on marine environmental protection, focusing on ROPAX vessels operating between Dar es Salaam and Zanzibar. The stud aims to assess the quality of ship’s crew members in training and education, experience and the number of crew in sewage pollution prevention practices. The study collected data from 80 respondents, whereby both questionnaires were used to collect the data. The data were analyzed by using T-test, Chi-square test, Descriptive statistics and inferential statistics. The study finding revealed that significant deficiencies in awareness and training among crew members regarding MARPOL Annex IV regulations, with many respondents rating their understanding as very low or low. This lack of knowledge, compounded by insufficient formal training programs, hampers the effective implementation of pollution prevention measures. The study recommends a multifaceted approach, including enhanced training, financial support for compliance, and stronger regulatory oversight to improve environmental protection practices. These findings provide crucial insights for policymakers and stakeholders aiming to reduce the environmental impact of the Tanzanian maritime industry and protect marine ecosystem.
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