Green Technology Applications in Maritime Transportation Engineering for Sustainable Operations

Abstract

This study investigates the integration of green technologies within maritime engineering through a convergent mixed-methods design. The research combines qualitative stakeholder interviews with quantitative case study data from documented implementations of renewable energy systems, energy-efficient vessel designs, and sustainable port management practices across Indonesian maritime operations. Data collection involved semi-structured interviews with 15 maritime professionals, 10 educators, and 12 recent graduates, alongside operational performance data from five case study sites measuring fuel consumption, emission levels, and efficiency metrics. Thematic analysis of interview transcripts was triangulated with descriptive statistical analysis of operational data. Findings indicate substantial improvements in fuel efficiency (12-20%) and emission reductions (18-35%) across examined technologies, with implementation effectiveness scores averaging 8.5/10 (SD=0.7). Liquefied natural gas (LNG) systems, hybrid propulsion, and shore power infrastructure demonstrated measurable environmental and economic benefits, though adoption remains constrained by capital costs averaging 30-45% higher than conventional systems and payback periods of 7-14 years exceeding typical operator investment horizons of 5-10 years. Educational modules integrating sustainability principles showed 42-58% practical workplace application rates among graduates, revealing gaps between theoretical knowledge transfer and operational competency development. This research addresses the intersection of technological capability, educational preparedness, and implementation barriers in maritime sustainability, contributing a contextualized framework for green technology integration with implications for developing maritime economies facing similar resource constraints and capacity development challenges.