Marine & Offshore HVAC and Galley Extract Cleaning, UK and Worldwide
Vessel ductwork cleaning for galley extraction, laundry and onboard HVAC systems. Deduct works with vessel technical teams to plan cleaning around maintenance stops, port visits and drydock periods, with pre and post-clean photographs for onboard records.
- Galley grease and laundry duct cleaning
- Accommodation and machinery space HVAC
- Mobilisation to UK ports and overseas drydock
- Works sequenced into the yard programme
- Drydock
- Programme-aligned works
- Overseas
- Teams mobilised
- Galley
- Grease systems
- Photo
- Evidence throughout
Vessel ductwork cleaning during planned maintenance
A drydock window is fixed. Scope has to be understood before mobilisation, and the work has to complete inside the slot allocated to it.
Deduct plans marine projects against the yard programme: teams, equipment and consumables travel with the job, and works are sequenced zone by zone so galley, laundry and accommodation areas are released back in order.
On a recent project a team flew to Gran Canaria to clean the galley extraction and onboard HVAC systems of a drill ship during a maintenance stop. Works included laundry ductwork deep cleaning and galley system grease removal as part of pre-planned maintenance.
Every system is photographed before and after, giving the vessel's technical team the same evidence standard we provide to shore-based estates.
Onboard systems we clean
From galley canopy to machinery space supply.
Galley extract & grease systems
Canopies, filters, ducting, risers and fans degreased with photographic verification.
Laundry extraction
Lint removal from laundry ducting to restore airflow and reduce fire loading.
Accommodation ventilation
Cabin and public space supply and extract systems cleaned zone by zone.
Engine room & machinery HVAC
Machinery space ventilation and supply systems cleaned during shutdown windows.
AHUs & fan units
Onboard air handling and fan units cleaned, inspected and photographed.
Pre-planned maintenance
Scheduled works aligned to the vessel's planned maintenance system.
How marine projects are delivered
Scoped ashore, executed inside the window.
- 01
Scope
System list, drawings and previous records reviewed with the technical superintendent.
- 02
Mobilise
Teams, equipment and consumables travel to the port or yard for the agreed date.
- 03
Sequence
Works phased by zone against the yard programme and other trades onboard.
- 04
Clean & verify
Systems cleaned, verified and photographed compartment by compartment.
- 05
Hand back
Zones released in sequence with the report issued for onboard records.
Pre & Post Clean Photos
Galley extraction ductwork aboard a drill ship in Las Palmas, photographed before and after cleaning during its maintenance stop.
Recent marine and offshore projects
Galley, laundry and accommodation HVAC works delivered in drydock, alongside and offshore.
Marine HVAC & Galley Extract Cleaning, Las Palmas
A team flew out to Gran Canaria to clean the galley extraction and onboard HVAC systems of a drill ship during a maintenance stop.
Read the case study →Vessel HVAC Cleaning, Portsmouth
Onboard HVAC and ventilation systems cleaned aboard Island Sky, operated by Salen Ship Management, as part of the vessel's planned annual maintenance programme in Portsmouth.
Read the case study →
Offshore Installation HVAC Cleaning, Invergordon
Accommodation, galley and laundry HVAC systems cleaned on an offshore installation during a scheduled maintenance visit.
Read the case study →Public acknowledgement from Salén Ship Management
Salén Ship Management named Deduct Limited among the contractors thanked for M/S Hebridean Sky’s drydock works in its January 2026 project update. This was a separate Las Palmas project from the drill-ship galley extraction works shown above.
Read Salén’s Hebridean Sky project updateA shore contractor that works properly at sea
Marine projects reward preparation. We plan for the constraint before we mobilise.
- Experience on passenger and commercial vessels
- Overseas mobilisation including drydock locations
- Works sequenced against the yard programme
- Experience with galley grease and laundry lint systems
- Confined space capability for machinery spaces
- Zone-by-zone handback to keep the programme moving
- Full photographic evidence for onboard records
- Single contact from scoping through to report
Frequently asked questions
Questions from technical superintendents, fleet managers and yard teams.
- Do you travel to vessels overseas?
- Yes. Teams mobilise to UK ports and international maintenance locations. We have delivered galley, laundry and accommodation HVAC cleaning on vessels in Las Palmas among other overseas locations, working to the vessel's planned maintenance programme.
- Can works be completed within a drydock window?
- Yes — that is how most marine work is planned. Scope is agreed in advance, teams and equipment are mobilised to arrive with the vessel, and works are sequenced against the yard programme so handback is not delayed.
- Which onboard systems do you clean?
- Galley extract and grease systems, laundry extraction, accommodation and cabin ventilation, engine room and machinery space HVAC, and associated AHUs and fan units.
- Can works be carried out while the vessel is operational?
- In many cases yes, in port or during turnaround, phased by zone so cabins and galley operations are released back in sequence.
- What documentation is provided?
- The same evidence standard as our shore-based work: referenced systems, pre and post-clean photography, verification and recommendations — supporting onboard maintenance records and inspection regimes.
Continue reading
Other Deduct services and guidance relevant to this work.
Kitchen Extract Cleaning
Grease removal to TR19 Grease with deposit readings and insurer-ready evidence.
Commercial Ductwork Cleaning
TR19-aligned cleaning, verification and reporting for supply and extract systems.
Pre & Post Clean Reporting
How our compliance documentation is structured.
Recent Projects
Completed ventilation hygiene works across UK sectors.
Contact the Team
Book a free site survey or ask a compliance question.
Sectors We Work In
Healthcare, commercial, industrial, marine and public sector estates.
Discuss your next vessel maintenance stop
Contact our team about galley extraction, laundry ductwork or onboard HVAC cleaning in port or drydock.
Request a marine ventilation quotation
Leave your name and email and we will get in touch. If known, you can include the vessel, port and maintenance dates in your message.
Prefer to talk it through? Call 0333 772 0089 or email hello@deductltd.co.uk.
Overseas site? We mobilise UK-employed teams and equipment internationally. Tell us the country and site type. We work to TR19 and to your local requirements.