Offshore Vessel Tank Cleaning
Mud, brine and base oil tanks turned around fast
- Mud, brine, base oil, drill water and cement tanks
- Cargo-change cleaning between incompatible fluids
- Preparation for class survey and coating inspection
Get a quote
Tell us the vessel, the port and the window. Scoped reply, usually the same working day.
Offshore support vessels carry a product mix that no conventional tanker deals with — drilling mud, brine, base oil, drill water, cement and completion fluids, often in the same voyage cycle. Cross-contamination between them is expensive, and the turnaround windows between charters are short.
We clean OSV and PSV tankage for cargo change, class survey, layup or reactivation, working to the vessel's and the charterer's cleanliness criteria and handling the recovered fluid streams with the documentation the operator's HSE regime requires.
What you get
- Mud, brine, base oil, drill water and cement tanks
- Cargo-change cleaning between incompatible fluids
- Preparation for class survey and coating inspection
- Layup preparation and reactivation cleaning
- Recovered fluids handled with full disposal documentation
Where we deliver this
- UAE
- India
- Sri Lanka
- Lomé
Scope of work
What is included as standard. Anything outside this is quoted separately and flagged before mobilisation, never added afterwards.
- 01
Fluid recovery and stripping
Residual mud, brine and base oil are recovered and transferred to nominated tanks, road tankers or shore reception.
- 02
Tank washing
Machine and manual washing appropriate to the fluid type, with particular attention to settled solids in mud and cement tanks.
- 03
Line and pump flushing
Associated pipework, pumps and manifolds are flushed so cross-contamination does not reappear from the system after the tank is clean.
- 04
Survey preparation
Tanks are cleaned and dried to a condition suitable for coating inspection and class survey attendance.
- 05
Waste management
Recovered fluids and solids are consolidated and landed to licensed facilities with manifests issued.
How we deliver it
- 01
Scope and fluid assessment
Previous and next cargo, tank arrangement and system layout are reviewed to set the cleaning standard and method.
- 02
Mobilisation
Teams, pumps, vacuum units and consumables are mobilised to the quay or offshore base within the vessel's window.
- 03
Cleaning and flushing
Tanks and associated systems are cleaned under enclosed-space entry control with continuous monitoring.
- 04
Acceptance
Tanks are presented to the vessel, charterer or surveyor, with completion and disposal documentation issued.
Frequently asked
Can you work at an offshore base rather than a commercial quay?
Yes. We regularly mobilise to offshore supply bases and work within the base operator's HSE and permit regime.
How is cross-contamination between charters prevented?
By cleaning the system, not just the tank. Pipework, pumps and manifolds retain residue that will re-contaminate a clean tank on the first transfer, so line flushing is part of the standard scope rather than an extra.
Guides for this job
- "Biofuel blends after DPP: extra checks before loading FAME or HVO grades"
What changes when the clean cargo after a DPP changeover is a biofuel or a biofuel blend, how FAME and HVO differ, and which extra checks on tanks, coatings and previous cargoes make sense.
- "Dark condensate as last cargo: clean or dirty when preparing tanks?"
How to treat condensate as a previous cargo when preparing tanker tanks, why "light" condensates can still leave dark residue, and how to plan the cleaning for the next grade.
- DPP to gasoline and naphtha: colour, odour and sulphur risk on the first clean cargo
Why gasoline and naphtha are demanding first clean cargoes after dirty petroleum products, what usually goes wrong, and how to prepare the tanks and system to protect colour, sulphur and odour.
Ready when you are.
Tell us the vessel, the port and the window. You get a scope, a crew size and an honest duration — usually the same working day.