Class-Certified Technical Oversight
Vessel Machinery Management
Machinery Maintenance Capabilities
Class-approved engineering scopes designed to optimize machinery lifespan, minimize off-hire downtime, and guarantee transparent maintenance accounting.
Turnkey Drydock Superintendency
Complete shipyard project supervision from specification drafting and tender negotiation to on-site quality control, steel renewal oversight, and final invoice audit.
- Yard Tender & Cost Benchmarking
- On-Site Senior Superintendent 24/7
- Coating & Underwater Hull Oversight
Main & Auxiliary Engine Overhaul
Scheduled top and major overhauls of 2-stroke and 4-stroke marine diesel engines (MAN B&W, WinGD, Wärtsilä, Yanmar) by factory-trained OEM technicians.
- Piston Pulling & Liner Hone Honing
- Crankshaft Alignment & Deflections
- Turbocharger Balancing & Cartridge Swaps
Vibration & Condition Monitoring
Predictive maintenance diagnostic testing using spectrum vibration analysis, thermography, and lube oil particulate trend testing to eliminate catastrophic failures.
- Rotating Machinery FFT Vibration Scans
- Lube Oil Wear Metal Spectroscopy
- Electrical Switchboard Thermal Imaging
Steel Renewal & Ultrasonic NDT
Ultrasonic Thickness Measurement (UTM) surveys, structural integrity calculation, hold restoration, and Class-certified coded welder deployment.
- UTM Hull Plate Gauging (IACS Standard)
- Ballast Tank & Hold Structural Stiffening
- Hatch Cover Sealing & Ultrasonic Testing
The 5-Stage Drydock &
Major Refit Execution Lifecycle
A rigorous milestone-based methodology ensuring shipyard projects are delivered strictly on schedule, within approved CAPEX budgets, and zero Class deficiencies.
Tender Specification & Yard Booking
Formulation of detailed repair work scopes, structural weight calculations, competitive yard bidding across global drydocks, and contract penalty clause enforcement.
Spares Logistics & Riding Squad Pre-Boarding
Pre-positioning of OEM machinery spares, Class survey pre-audits, staging of special tools, and onboarding riding squads for pre-docking preparation.
Block Landing, Hull Blasting & Overhauls
Vessel docking on keel blocks, high-pressure hydro-blasting (WJ-2 / Sa 2.5), sea chest valve overhauls, tailshaft withdrawal, and rudder bearing clearance checks.
Class Society Surveys & Undocking
Joint hull and machinery survey with Class Society surveyors (IACS), boiler hydrostatic testing, flood-up dock basin clearance, and sea trial propulsion testing.
Final Invoice Audit & PMS Reconciliation
Item-by-item reconciliation of shipyard invoices against actual daily work logs, warranty registration, and computerized PMS database updates.
IACS Major Class Societies &
Statutory Survey Prep Matrix
Triwave superintendents maintain continuous direct alignment with all leading international classification societies, ensuring spotless survey endorsements.
| Statutory Survey Type | Inspection Interval | Key Technical Scopes Verified | Triwave Prep Deliverable |
|---|---|---|---|
| Special Survey (Class Renewal) Hull & Machinery | Every 5 Years | Extensive close-up structural hold inspection, UTM gauging, tank pressure testing, boiler surveys. | Turnkey Superintendent Supervision |
| Intermediate Survey Mid-Period Assessment | 2.5 Years (± 6 Months) | Ballast tank coating condition, electrical load sharing, steering gear 100% load test, bilge alarms. | Pre-Survey Gap Audit |
| Annual Class & Flag Survey Continuous Compliance | Yearly (± 3 Months) | Lifeboats/davits, firefighting systems (CO2/foam), navigational telemetry, watertight closures. | 100% First-Pass Guarantee |
| Condition of Class (CoC) Closeout Defect Rectification | Immediate / Due Date | Class recommendation repair verification, ultrasonic weld scans, replacement certification. | Fast-Track Surveyor Signoff |
Voyage Breakdown or Imminent Class Deadline?
Our certified mobile Riding Squads (Coded Welders, Marine Fitters, Automation Engineers) mobilize within 2 hours with tools and OEM spares to board at anchorage or execute in-voyage repairs.
Optimize Vessel Performance &
Reduce Off-Hire Maintenance Costs
Submit your fleet specifications, upcoming drydock dates, or PMS requirement. Our technical management board delivers a comprehensive scope proposal and budget model within 24 hours.