Underwater Hull Cleaning at Freetown Port
Full hull cleaned in the water, vessel stays on hire
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Tell us the vessel, the port and the window. Scoped reply, usually the same working day.
Cleanship Marine provides underwater hull cleaning at Freetown Port, Western Area, working the container terminal (berths 3–6), bulk and break-bulk berths. Commercial dive teams remove slime, weed and shell growth from the vertical sides, flat bottom, bilge keels, sea chests and niche areas with the vessel afloat and on hire — no dry dock, no diversion, no off-hire.
The Port of Freetown at Queen Elizabeth II Quay is Sierra Leone's main commercial port. The container terminal, berths 3 to 6, is run under concession by Freetown Terminal Limited, part of Africa Global Logistics, and its extension added a 13-metre-deep berth for larger container ships. Bulk and break-bulk cargo is handled under a separate concession, and the harbour also carries the Kissy Oil Terminal, the fishing fleet and the ferries across the estuary to Lungi airport.
Freetown's harbour is sheltered, so hull cleaning alongside or at the inner anchorage is possible most of the year. The season sets the method: in the dry months the water is clear enough to work and film well, while from May to October rain run-off from the river drops visibility and divers work largely by touch on the flat sides. We plan the clean around the berth window and tell you before mobilising what video quality to expect for the season.
What it gets you
- Hydrodynamic smoothness restored before fouling reaches the calcareous stage that damages coating
- Fuel and emissions penalty from drag reduced without taking the vessel off hire
- Documented condition record for the technical file and the next docking specification
- Sea chests and inlets cleared, protecting cooling water flow
Working conditions at Freetown
Freetown sits on the south side of the Sierra Leone River estuary, one of the largest natural harbours on the African coast, and the quay is sheltered from the Atlantic swell that works the open coast to either side. What it is not sheltered from is the rain: Freetown is one of the wettest capitals in West Africa, and from roughly May to October the river carries run-off into the harbour, cutting visibility at the berths and stopping deck work in the heaviest downpours. Warm estuary water and long berth waits build fouling steadily.
- Where we work
- Container terminal (berths 3–6) · Bulk and break-bulk berths · Kissy Oil Terminal · Inner harbour anchorage
- Vessels we see here
- Feeder container ships · General cargo and break-bulk ships · Product tankers · Fishing vessels · Freetown–Lungi ferries
What we do at Freetown
- Pre-clean fouling survey to establish coverage, growth type and coating condition before any tool touches the hull
- Brush cart cleaning of the flat bottom and vertical sides, with brush hardness selected against your antifouling specification
- Hand cleaning of bilge keels, rudder, stern frame, thruster tunnels, anodes and the niches a cart cannot follow
- Sea chest gratings and inlet openings cleared of growth and debris to restore cooling water flow
- Diving permission cleared with Sierra Leone Ports Authority and the terminal before mobilisation
- Before-and-after video and stills, with a written report on coating condition and anode wastage
Planning the window at Freetown
The combination of Atlantic swell and rain governs the calendar at Freetown Port, with the heaviest rain from May to October and swell running year-round. The swell here is long-period Atlantic ground swell rather than wind-driven sea, so it reaches the anchorages on days that look calm from the bridge and it is the single biggest cause of a lost in-water window on this coast. Because the harbour is sheltered, work here normally runs alongside or at a protected anchorage and can proceed in parallel with cargo operations rather than competing with them for the berth window.
Work is taken at the container terminal (berths 3–6), bulk and break-bulk berths, Kissy Oil Terminal, inner harbour anchorage, and which of those a vessel ends up at changes the dive plan more than the season does. Teams mobilise via Freetown Lungi (FNA), 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 Freetown
Container tonnage on a fixed rotation shows the familiar pattern: light slime over most of the vertical sides, with the real accumulation in the flat bottom, the bilge keels and the niches where flow is slowest. Those are the areas that cost fuel and the ones a quick clean tends to skip.
Vessels calling Freetown often wait for a berth in warm, nutrient-rich estuary water, so the flat bottom and sea chests pick up steady barnacle and weed growth, heavier after the rainy season. Fishing vessels based in the harbour, which lie idle between trips, carry the heaviest fouling we see here.
Standard scope of work
Included as standard on every underwater hull cleaning attendance, wherever the vessel is. Anything outside it is quoted separately and flagged before mobilisation, never added afterwards.
- Fouling survey
- A pre-clean dive establishes fouling type, coverage and severity, and confirms coating condition so the correct tooling is selected.
- Flat bottom and vertical sides
- Brush cart cleaning of large areas, removing slime, weed and shell growth to restore surface smoothness.
- Niche areas
- Hand cleaning of bilge keels, bow thruster tunnels, rudder, stern frame, anodes and other niche areas where fouling concentrates.
- Sea chests and gratings
- Sea chest gratings and inlet openings cleared of growth and debris to restore cooling water flow.
- Documentation
- Underwater video and stills before and after, with a written report covering coating condition and anode wastage.
How we deliver it at Freetown
- 1
Scope and vessel details
Tell us the vessel, her particulars, the coating specification and the window at Freetown. 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
Permits and approvals
Sierra Leone Ports Authority approves the work alongside the local harbour master, and at a state port that conversation is quicker but less formal — it is worth having in writing. Diving permission, terminal approval and any environmental clearance for in-water work are handled by us, not left with the agent to chase.
- 3
Mobilisation to Freetown
Divers, compressors, brush carts and cameras mobilise via Freetown Lungi (FNA). Where a vessel is also calling at Pepel, one mobilisation is normally sized to cover both.
- 4
Safety setup and the dive
The vessel is secured for diving — main engine, shaft and thrusters immobilised, sea suctions confirmed shut, permit agreed with the master. Teams work under surface supervision with continuous diver communications and video throughout.
- 5
Report and handover
A completion report covering underwater hull cleaning is issued with before-and-after imagery, coating and anode condition and anything found that you should know about. The findings are discussed with the vessel rather than emailed and forgotten.
Freetown Port at a glance
- UN/LOCODE
- SLFNA
- Port type
- State Port
- State
- Western Area
- Country
- Sierra Leone
- Water body
- Sierra Leone River estuary
- Port authority
- Sierra Leone Ports Authority
- Main cargoes
- Containers, Rice and bagged general cargo, Break-bulk and project cargo, Fuel, Fishing catch
- Crew mobilisation
- Freetown Lungi (FNA)
- Services here
- Hull Cleaning and Hold Cleaning
Frequently asked — Underwater Hull Cleaning at Freetown
Do you provide underwater hull cleaning at Freetown Port?
Yes. Cleanship Marine works Freetown Port (SLFNA) in Western Area, Sierra Leone, covering the container terminal (berths 3–6), bulk and break-bulk berths, Kissy Oil Terminal, inner harbour anchorage. Teams mobilise via Freetown Lungi (FNA) with the full spread.
Can hull cleaning be done in Freetown during the rainy season?
Yes — the harbour stays sheltered — but visibility drops from about May to October as the river carries run-off into the estuary, so divers work largely by touch and the video is less clear. For a clean with good before-and-after footage, the dry season is better.
Can underwater hull cleaning be done while the vessel works cargo at Freetown?
Yes, in most cases. The harbour is sheltered enough that divers work alongside while cargo operations continue, and neither holds the other up. The vessel stays on hire throughout, and there is no diversion and no dry dock. We scope against the conditions at Freetown and tell you honestly whether the window you have is enough.
Do you need a diving permit from Sierra Leone Ports Authority?
Yes, and we obtain it. Diving permission from Sierra Leone Ports Authority, terminal approval where the berth requires it, and any environmental clearance for in-water work are arranged as part of the job rather than left with the agent. The master's permit to work and the immobilisation of machinery are agreed on board before anyone enters the water.
What is underwater visibility like at Freetown?
Visibility at Freetown Port is moderate in the dry season, low from roughly May to October when rain run-off from the Sierra Leone River clouds the harbour, and the combination of Atlantic swell and rain sets the outer limits of the calendar. How the tide and sea state shape the dive plan is set out in full in the working-conditions section on this page.
Which vessels do you carry out underwater hull cleaning on at Freetown?
Feeder container ships, General cargo and break-bulk ships, Product tankers, Fishing vessels, Freetown–Lungi ferries — the traffic at Freetown Port runs to containers, rice and bagged general cargo, break-bulk and project cargo, 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 Freetown?
Divers and equipment mobilise via Freetown Lungi (FNA). 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 Pepel or Conakry, one mobilisation is often sized to cover both.
What does underwater hull cleaning at Freetown cost?
It depends on the vessel's dimensions and wetted area, the fouling state found, the coating specification and the working window available at Freetown. 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 Freetown and you get a scoped price, usually the same working day.
Underwater Hull Cleaning at Freetown Port.
Tell us the vessel, her ETA at Freetown and the window. You get a scope, a crew size and an honest duration — usually the same working day.