Maritime engine room environments expose seafarers to severe occupational hazards, particularly respiratory risks from diesel exhaust and particulate matter. Despite Filipinos comprising a major segment of the global maritime workforce, localized health data remains limited. This study assessed the prevalence of respiratory health issues among selected Filipino engine officers and ratings, exploring their direct implications on work performance and daily life. A quantitative descriptive-correlational design was employed, gathering data from 100 Filipino maritime professionals stationed in Pasay City with a minimum of three years of vessel experience. Utilizing a validated survey instrument, data were analyzed via descriptive statistics, Kruskal-Wallis tests, and Pearson’s correlation. Findings revealed that chronic cough (Mean=3.48) and chronic mucus (Mean=3.43) were the most prevalent respiratory conditions. Participants acknowledged a high perceived severity regarding the impact of these issues on their daily tasks. Crucially, the study demonstrated that respiratory deterioration is cumulative; symptoms significantly worsened with advancing age and prolonged years of service (p<0.05). Occupational hierarchy and vessel type also dictated risk levels, with lower-ranking personnel (Oilers/Wipers) and crew aboard offshore supply vessels experiencing the most severe respiratory degradation. Furthermore, a significant moderate positive correlation (r=0.698, p<0.01) was established between overall respiratory problems and a diminished quality of life. The study concludes that occupational respiratory ailments profoundly compromise both the physiological well-being and work efficiency of Filipino seafarers. Stakeholders must urgently implement targeted health surveillance, modernize ventilation engineering controls, and enforce comprehensive safety education tailored to high-risk maritime demographics.