Dahej Port · INDAH

Offshore Vessel Tank Cleaning at Dahej Port

Mud, brine and base oil tanks turned round between charters

Get a quote

Tell us the vessel, the port and the window. Scoped reply, usually the same working day.

Cleanship Marine cleans offshore support vessel tanks at Dahej Port, Gujarat — drilling mud, brine, base oil, cement and bulk tanks turned round between charters and prepared for the next product.

An OSV between charters is an asset earning nothing, and the tank turnaround is usually the item on the critical path. The products involved — mud, brine, base oil, cement — each leave a different residue and need a different method, so the plan is built product by product rather than tank by tank.

What it gets you

Vessel handed to the next charter on time rather than held on the tank turnaround
Cross-contamination between products avoided
Inspection passed at the first attempt
Disposal documented, not improvised

Working conditions at Dahej

Work here starts alongside, and where the berth window runs out it continues on the outward passage with a riding crew — the berth will not be held open for it. The south-west monsoon sets the outer limits of the calendar, roughly June to September, and it affects the anchorage far more than the berth. Approval runs through Gujarat Maritime Board and the terminal operator, and licensed slop reception is booked before the tanks are opened — at most ports on this list that booking, not the cleaning, is what sets the date.

Where we work: LNG jetty · Liquid chemical terminal · Solid cargo berths
Vessels we see here: LNG carriers · Chemical and product tankers · Bulk carriers

What we do at Dahej

Product-specific cleaning plan for mud, brine, base oil, cement and bulk tanks
Gas-freeing, atmosphere testing and enclosed-space entry certification
Manual and mechanical cleaning of tanks, lines, valves and pump rooms
Preparation and presentation for the incoming charterer's inspection
Residue and washings disposed of through licensed reception at Dahej
Tank-by-tank completion record for the vessel and the charterer

Planning the window at Dahej

The south-west monsoon governs the calendar at Dahej Port, roughly June to September. Swell and reduced surface visibility close most open-water work on this coast for the duration, and the weeks either side are unreliable rather than unusable. Terminal windows here are tight and most operators will not permit tank work alongside, so the realistic plan is the anchorage or the outward passage. That is agreed before the vessel arrives, not argued at the berth.

Teams mobilise via Vadodara (BDQ) or Surat (STV), so give us the ETA as early as you have it — the travel is the flexible part, the approvals and the working window are not.

What we typically find at Dahej

Dahej is LNG and liquid chemicals, so the certification chain runs ahead of the cleaning itself: gas-freeing, marine chemist attendance and enclosed-space entry certificates are the critical path, and the terminal sits in the approval chain from the start. Chemical grade changes here are set by the next charterer's acceptance criteria, not by a standard wash.

Gas and specialised liquid tonnage calls here, which puts the certification chain ahead of the cleaning itself: gas-freeing, marine chemist attendance and enclosed-space entry certificates are the critical path, and the physical work is the short part of the job.

Standard scope of work

Included as standard on every offshore vessel tank cleaning attendance, wherever the vessel is. Anything outside it is quoted separately and flagged before mobilisation, never added afterwards.

Fluid recovery and stripping: Residual mud, brine and base oil are recovered and transferred to nominated tanks, road tankers or shore reception.
Tank washing: Machine and manual washing appropriate to the fluid type, with particular attention to settled solids in mud and cement tanks.
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.
Survey preparation: Tanks are cleaned and dried to a condition suitable for coating inspection and class survey attendance.
Waste management: Recovered fluids and solids are consolidated and landed to licensed facilities with manifests issued.

Full Offshore Vessel Tank Cleaning service details

How we deliver it at Dahej

1
Scope and vessel details
Tell us the vessel, her particulars, the prior and next grade and the window at Dahej. We come back with a defined scope, a crew size and a duration we will stand behind. Where the conditions here will not support what has been asked for, we say so at this stage rather than after mobilisation.
2
Approvals, slops and certification
Terminal and port approval for tank work is obtained from Gujarat Maritime Board and the terminal operator, licensed slop and sludge reception is booked, and marine chemist attendance is arranged where the grade change requires it. At Dahej the disposal route is the item that most often sets the schedule, so it is fixed first.
3
Mobilisation to Dahej
Crews, pumps, machines and chemicals mobilise via Vadodara (BDQ) or Surat (STV). Where a vessel is also calling at Hazira, one mobilisation is normally sized to cover both.
4
Gas-freeing, entry and cleaning
Atmosphere testing, gas-freeing and enclosed-space entry certification come before any entry, and are repeated after every break. Standby cover and atmosphere monitoring run continuously while anyone is inside, and progress is reported tank by tank.
5
Report and handover
A completion report covering offshore vessel tank cleaning is issued with before-and-after imagery, tank by tank and anything found that you should know about. The findings are discussed with the vessel rather than emailed and forgotten.

Dahej Port at a glance

UN/LOCODE: INDAH
Port type: State Port
State: Gujarat
Country: India
Water body: Gulf of Khambhat
Port authority: Gujarat Maritime Board
Main cargoes: LNG, Liquid chemicals, Coal, Fertiliser, Steel and project cargo
Crew mobilisation: Vadodara (BDQ) / Surat (STV)
Services here: Hull Cleaning, Hold Cleaning and Tank Cleaning

Frequently asked — OSV Tank Cleaning at Dahej

Do you provide offshore vessel tank cleaning at Dahej Port?

Yes. Cleanship Marine works Dahej Port (INDAH) in Gujarat, India, covering the LNG jetty, liquid chemical terminal and solid cargo berths. Teams mobilise via Vadodara (BDQ) or Surat (STV) with the full spread.

Can offshore vessel tank cleaning be done while the vessel works cargo at Dahej?

Most terminals here will not permit tank work alongside, so the plan is the anchorage or the outward passage. We confirm the terminal's position before quoting rather than discovering it at the gangway. The vessel stays on hire throughout, and there is no diversion and no dry dock. We scope against the conditions at Dahej and tell you honestly whether the window you have is enough.

How is slop and sludge disposal handled at Dahej?

Through licensed reception, booked with Gujarat Maritime Board and the terminal operator before the tanks are opened. At Dahej the disposal route is usually what sets the schedule, so it is fixed first and documented tank by tank. Gas-freeing, atmosphere testing and enclosed-space entry certification are part of the same scope.

Where is the work done at Dahej — alongside, at anchorage or on passage?

Work here starts alongside, and where the berth window runs out it continues on the outward passage with a riding crew — the berth will not be held open for it.

Which vessels do you carry out offshore vessel tank cleaning on at Dahej?

LNG carriers, Chemical and product tankers, Bulk carriers — the traffic at Dahej Port runs to lng, liquid chemicals and coal, so those are the profiles we see most. The scope is sized to the vessel, not to a standard package.

How quickly can a team mobilise to Dahej?

Crews and equipment mobilise via Vadodara (BDQ) or Surat (STV). Give us the ETA and the window and we will confirm what is achievable rather than promise a date we cannot hold. Where the vessel also calls at Hazira or Magdalla, one mobilisation is often sized to cover both.

What does offshore vessel tank cleaning at Dahej cost?

It depends on the tank count and volume, the prior and next grade, how much sludge is in there and whether the work runs alongside, at anchorage or on passage from Dahej. We would rather scope it properly and give you a specific figure than quote a headline rate that changes once the work starts. Send the details and the window at Dahej and you get a scoped price, usually the same working day.

Get in touch