Underwater Hull Cleaning at Praia 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 Praia Port, Santiago, working the main commercial quays and ferry 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.
Praia is Cape Verde's capital and its second-busiest port after Mindelo, modernised in 2014 to 863 metres of quay and a maximum depth of 13.5 metres. It is the hub of the inter-island network — ferries run from here to seven of the other islands — as well as the main container and general cargo gateway for Santiago, with a fishing quay and a growing cruise trade alongside.
Praia's hull work is shaped by the ferry network. The inter-island ferries run fixed timetables out of here and spend their lives in warm Atlantic water with short turnarounds, so a hull clean has to fit between sailings rather than stop the service — typically overnight at the berth or during a scheduled lay day. The container feeders on the Europe–West Africa rotations are the other regular case: their berth time is set by the box count, so their hull is cleaned at the anchorage in the bay while they wait, not at the quay.
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 Praia
Praia sits in a natural bay between Ponta Temerosa and Ponta das Bicudas, with the Ilhéu de Santa Maria to the west, and the quays are sheltered from the north-east trade wind that governs the rest of the archipelago. The water is ocean water rather than river or lagoon water, so visibility is good by the standards of the African coast, though it drops close to the quays with propeller wash and harbour traffic. The berths are busy with ferries and feeders, so in-water work is either sequenced around the ferry timetable or taken at the anchorage in the bay.
- Where we work
- Main commercial quays · Ferry berths · Fishing quay · Anchorage in Praia bay
- Vessels we see here
- Feeder container ships · Inter-island ferries · General cargo coasters · Cruise ships · Fishing vessels
What we do at Praia
- 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 ENAPOR – Portos de Cabo Verde 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 Praia
The trade-wind and swell season governs the calendar at Praia Port, with the strongest trade winds from roughly December to May, and a short rainy season from August to October. The islands sit in open ocean, so a port's exposure depends on which side of its island it faces: the lee-side harbours stay calm while the trade wind blows, but long-period swell from North Atlantic storms reaches the north and west coasts in winter, and the late-summer tropical waves that pass through here can turn into storms. 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 main commercial quays, ferry berths, fishing quay and anchorage in Praia bay, and which of those a vessel ends up at changes the dive plan more than the season does. Teams mobilise via Praia (RAI), 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 Praia
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.
Shelter is a mixed blessing for a hull. The same calm that makes the port easy to work in is still water, and still water grows fouling faster than an exposed berth does.
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 Praia
- 1
Scope and vessel details
Tell us the vessel, her particulars, the coating specification and the window at Praia. 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
ENAPOR – Portos de Cabo Verde 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 Praia
Divers, compressors, brush carts and cameras mobilise via Praia (RAI). Where a vessel is also calling at Vale dos Cavaleiros, 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.
Praia Port at a glance
- UN/LOCODE
- CVRAI
- Port type
- State Port
- Island
- Santiago
- Country
- Cape Verde
- Water body
- Atlantic Ocean
- Port authority
- ENAPOR – Portos de Cabo Verde
- Main cargoes
- Containers, General cargo, Construction materials, Fishing catch
- Crew mobilisation
- Praia (RAI)
- Services here
- Hull Cleaning
Frequently asked — Underwater Hull Cleaning at Praia
Do you provide underwater hull cleaning at Praia Port?
Yes. Cleanship Marine works Praia Port (CVRAI) in Santiago, Cape Verde, covering the main commercial quays, ferry berths, fishing quay and anchorage in Praia bay. Teams mobilise via Praia (RAI) with the full spread.
Can an inter-island ferry be hull-cleaned in Praia without missing a sailing?
Usually, yes. We plan the clean around the timetable — overnight at the berth or on a scheduled lay day — and size the dive team so the hull is finished inside that gap. Tell us the ferry's schedule and we work back from the next departure.
Can underwater hull cleaning be done while the vessel works cargo at Praia?
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 Praia and tell you honestly whether the window you have is enough.
Do you need a diving permit from ENAPOR – Portos de Cabo Verde?
Yes, and we obtain it. Diving permission from ENAPOR – Portos de Cabo Verde, 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 Praia?
Visibility at Praia Port is good — this is ocean water with no river runoff — though it drops for a while near the quays after ferry and feeder movements stir up the bottom, and the trade-wind and swell season 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 Praia?
Feeder container ships, Inter-island ferries, General cargo coasters, Cruise ships and Fishing vessels — the traffic at Praia Port runs to containers, general cargo and construction materials, 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 Praia?
Divers and equipment mobilise via Praia (RAI). 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 Vale dos Cavaleiros or Furna, one mobilisation is often sized to cover both.
What does underwater hull cleaning at Praia cost?
It depends on the vessel's dimensions and wetted area, the fouling state found, the coating specification and the working window available at Praia. 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 Praia and you get a scoped price, usually the same working day.
Underwater Hull Cleaning at Praia Port.
Tell us the vessel, her ETA at Praia and the window. You get a scope, a crew size and an honest duration — usually the same working day.