Geotechnical drilling presents various challenges, and one of them is the ground condition. One such challenge arises when drilling in muddy areas. The presence of clayey materials can complicate the drilling process, requiring additional effort from the NAVI TEAM. In particular, when drilling in marshland areas, the team must go the extra mile to ensure that the project stays on schedule. To tackle these challenges, the team meticulously plans and discusses necessary strategies to overcome any obstacles that may arise.