LPD Ship Construction Planning Strategy At A Large-Scale Shipyard In East Java

Aris Supriyadi (Hang Tuah University, Surabaya, Indonesia)
Intan Baroroh (Faculty of Science and Marine Engineering, Naval Architectureand Ship Building Engineering)
Ali Azhar (Lecturer of Faculty of Technik dan Marine Sciences, University of Hang Tuah, Surabaya, East Java, 60111, Indonesia)
Akhmad Basuki Widodo (Naval Architecture, Faculty of Engineering and Marine Sciences, Hang Tuah University Surabaya.)

International Journal of Marine Engineering Innovation and Research
Vol. 11 No. 3 (2026)

The construction of the Landing Platform Dock (LPD) 163 M ship in the Warship Division of PT. XXX Indonesia is a project with a high level of complexity that requires effective project schedule control to minimize work delays. This study aims to analyze the construction scheduling of module I and module II using the Critical Path Method (CPM). The research method used is descriptive quantitative through the preparation of network planning and S-Curve analysis. The results of the study show that there are four scheduling alternatives, namely Schedule A (existing) for 59 days in block 122, Schedule B 54 days, Schedule C 57 days, and Schedule D 54 days. Scheduling B and D are the most optimal alternatives because painting, grand assembly, and quality control activities are on a non-critical path so they have slack and can accelerate the project duration. The results of the S-Curve analysis show that the plan progress in September 2025 increased from 65.8% to 99.4% in December 2026, the actual progress achievement (A) in March 2026 was only 31.1% while the plan was 84.6%, the assumed progress of the CPM results (B; D) reached 37.3% so there is a difference in progress achievement of 6.2%.