Muhammad Kashif Afzal and Hafiz Shahrukh Zohaib 2023. Realization of Vessel Productivity Enhancement via Comparative Analysis of Liner Services: A case of Qasim International Container Terminal (QICT) DP World, Karachi. POLARIS Journal of Maritime Research . 5, 1 (Dec. 2023), 117–146. DOI:https://doi.org/10.53963/pjmr.2023.007.1.