Our team recently completed a significant upgrade on the vessel’s KANGRIM Inert Gas Generator system, replacing and commissioning two new HMI panels on the local control panel and an additional HMI in the CCR. The new interfaces restored full functionality, improved system visibility, and enhanced operator interaction with one of the vessel’s most critical safety systems. This upgrade ensures smoother operation, clearer process monitoring, and improved reliability during cargo operations.

In parallel with the upgrade, the system underwent its Annual Health Check Inspection — a comprehensive evaluation designed to verify the condition and performance of all essential components. The inspection included verification of the oxygen analyzer and calibration accuracy, checks on control valve positioners, pressure and temperature transmitters, alarm and shutdown functions, communication signals, and overall system responsiveness. Each subsystem was assessed to confirm that it operated within specification and maintained proper integration with the IGG control logic.

Another successful overhaul was recently completed onboard, involving a Mt. Halla Main Starting Valve Actuator that had been exhibiting delayed response during opening operations. This issue directly affected the reliability and timing of the main engine starting sequence, making a full restoration essential to ensure safe and consistent performance. The actuator was removed and fully dismantled to allow for a complete internal assessment.

During the inspection, all mechanical components were cleaned and examined for wear, contamination, and degradation of sealing elements. Worn seals were replaced with new components to restore airtight integrity and eliminate internal leakage. The actuator was then reassembled with precision, ensuring correct alignment and smooth mechanical movement throughout the full stroke range. Once reinstalled onboard, operational testing was performed to verify proper response, timing, and coordination with the main starting valve mechanism.

Our team recently carried out detailed troubleshooting and fault‑finding on the vessel’s Main Engine Constant RPM control system during operational checks inside the ECR. The attendance was initiated due to irregular behavior observed in the governor response and RPM stabilization, requiring a structured diagnostic approach to identify the source of the malfunction. Given the importance of constant‑speed operation for propulsion control, every subsystem was examined with precision.

The inspection began with a full review of the automation and control cabinet, including verification of power supply stability and signal integrity across all relevant terminals. Voltage measurements were taken on the governor control module, relays, and feedback circuits to detect abnormalities in command signals or RPM reference inputs. Functional checks were also performed on control loops, alarm pathways, and the propulsion control system’s response behavior to ensure proper communication between interconnected components.

Our team completed troubleshooting and restoration works on the vessel’s Steering Gear Starter Panel after reports of intermittent failures in the steering pump start circuit. Through a detailed inspection of both control and power circuits, the issue was traced to a faulty control relay combined with loose terminal connections — a combination that caused unreliable operation and loss of the remote start command. Identifying the exact failure points allowed for a precise and efficient repair approach.

Corrective actions included replacing the defective relay, re‑terminating all critical wiring, and tightening terminal connections to restore proper electrical continuity. Functional testing was then performed in both local and remote modes, confirming stable relay operation, reliable signal transmission, and full restoration of the steering pump start circuit. With all functions verified, the system was returned to safe and dependable operational condition.

During a recent onboard attendance, our team carried out a full operational check and performance verification of the vessel’s KANGRIM Inert Gas Generator (IGG). The inspection focused on ensuring that the system met all safety and operational requirements, with particular attention to combustion performance, oxygen control, and the correct functioning of all protective interlocks. Each subsystem was evaluated to confirm stable operation under normal working conditions.

The scope of work included verification of the start‑up sequence, assessment of flame stability, and continuous monitoring of oxygen (O₂) levels at the inert gas outlet. Functional testing of the control system and analyzer feedback loops was performed to ensure accurate response to pressure, temperature, and flow conditions. Additional checks were conducted on the scrubber and associated equipment to confirm proper operation and overall system integrity.

Our team successfully completed repair and inspection works onboard, focusing on the vessel’s Tank Level Alarm System (95%–98%) equipped with an Omicron panel. This system plays a critical role in cargo and ballast monitoring, making its accuracy essential for safe and compliant operations. The attendance was part of a targeted effort to ensure the alarm system remained fully reliable during high‑level tank operations.

During the onboard inspection, a detailed evaluation of the system’s wiring, alarm channels, and sensor feedback was carried out. Through functional testing and signal verification, our technicians identified faulty level sensors that were causing inconsistent or incorrect alarm activation. The findings confirmed that the issue originated from sensor degradation rather than panel malfunction, allowing for a precise and efficient repair plan.

Our team recently completed a full health‑check inspection on a Kangrim Boiler and Oilon Burner as part of the vessel’s planned maintenance program. The inspection covered all major mechanical, electrical, and combustion‑related subsystems to ensure safe, stable, and efficient boiler operation. The boiler and burner were evaluated in detail to confirm that all components were functioning within operational standards.

The scope of work included visual inspection of the boiler, cleaning and inspection of the burner assembly, internal checks of the boiler control panel, and verification of the fuel system — including pressure, filters, and valves. The ignition system and flame sensors were tested, followed by a full burner sequence test covering pre‑purge, ignition, flame detection, and normal firing operation. Additional checks were performed on the combustion air fan, air damper calibration, safety valves, and all interlocks to ensure correct and safe response under all conditions.

Our team recently completed a full inspection, repair, and overhaul of the yacht’s engine control lever system, addressing issues that were affecting smooth operation, responsiveness, and overall maneuverability. The initial assessment revealed several performance‑limiting conditions, including stiff lever movement, delayed throttle and gear response, mechanical wear, poor lubrication, and misalignment. These findings indicated that the system required a complete restoration to return to safe and precise operation.

To ensure long‑term reliability, the control units were fully removed from the vessel and completely disassembled. Each internal mechanical component underwent deep cleaning and a detailed inspection for signs of wear, corrosion, or deformation. Worn parts were replaced using new repair kits, restoring the mechanical integrity of the system. This stage was critical for eliminating friction points and ensuring that all moving parts could operate freely and consistently.

Our team successfully completed the replacement of a failed Automatic Voltage Regulator (AVR) on a generator set, following a structured troubleshooting and commissioning process. The intervention began with a detailed diagnostic assessment to identify the root cause of the voltage instability, including wiring checks, signal verification, and inspection of the excitation circuit. Once the defective AVR was confirmed, it was removed and replaced with a new, fully compatible unit.

After installation, the generator underwent a complete configuration and parameter‑adjustment procedure to ensure proper voltage regulation. Fine‑tuning was performed to stabilize output voltage, confirm correct sensing behavior, and verify the AVR’s response under varying operational conditions. All protective settings and control parameters were reviewed to ensure safe and reliable integration with the generator’s electrical system.

We recently completed a comprehensive inspection of the vessel’s Kangrim composite boiler, performing detailed checks in both manual and automatic operating modes. The goal was to verify the boiler’s reliability, operational stability, and full compliance with safety standards. Our team examined all major components — including the burner, servomotor, pressure switches, solenoid valves, and auxiliary systems — confirming that each part operated correctly and consistently.

During the manual‑mode inspection, we verified the full start‑up and shutdown sequence, ignition performance, and proper response of the oil‑servo load adjustment. These checks ensured that manual control remains stable and predictable under all operating conditions. The system was then switched to automatic mode, where we validated correct modulation based on water level, pressure, and temperature inputs. The boiler’s control logic demonstrated smooth transitions between minimum and maximum load, confirming proper automation behavior.