News & Insights
Practical, source-based guidance on yacht air, water and galley hygiene — written for captains, chief engineers and yacht managers. Clear answers, real standards, no jargon.
GuidesA Captain’s Yearly Hygiene Calendar for a Yacht
One page for the year, with the intervals that come from sources marked as such.
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After eventsAfter a Stomach Bug on Board: Cleaning, Disinfection and Where Ozone Fits
The order of work from CDC, the Italian ISS and the US EPA, and the limits of ozone.
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After eventsPost-Refit Cleaning on a Yacht: Dust, Solvents and the Air System
What EPA and Department of Energy guidance says to do before people move back in.
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WaterChlorine, Ozone, UV or Silver: How Yacht Water Treatments Compare
Which treatment leaves protection in the pipes, and which does not, from WHO, EPA and a National Academies report.
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LegionellaYacht Jacuzzis, Spa Pools and Showers: Why Mist Matters
The WHO and CDC figures for spa disinfectant, pH and temperature, and a routine for showers.
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LegionellaLegionnaires’ Disease on Ships: What Public-Health Bodies Say
How it is caught, why ships are high-risk, and where ship-linked cases have come from.
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RulesShip Sanitation Certificates: What They Are and Whether a Yacht Needs One
Six months of validity, two types, and what the WHO texts say and do not say about yachts.
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GalleyYacht Galley Hood and Filter Cleaning: How Often Is Often Enough?
SOLAS gives no cleaning interval. What the rules say and the timetable used on land.
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RulesWhich Rules Apply to a Yacht’s Hygiene? Law, Guideline and Good Practice
IHR, WHO ship guide, MLC 2006, EU water directive and SHIPSAN: what is law and what is guidance.
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Air and mouldYacht Air Duct Cleaning: When It Is Worth Doing and When It Is Not
The EPA gives three reasons to clean ducts, and NADCA describes how it should be done.
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Air and mouldMould on a Yacht: Why It Grows and When to Call a Professional
Humidity below 60%, drying within 24–48 hours and the 10 sq ft rule from the EPA.
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LegionellaPositive Legionella Result on a Yacht: What Happens Next?
Check, correct, treat and re-test: the order the CDC suggests, and what the WHO ship guide adds.
Read the guide →LegionellaLegionella Testing on a Yacht: What ISO 11731 Means in Plain Words
Culture or PCR, how long results take and how a sample is taken, from ISO and the US CDC.
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LegionellaYacht Hot Water and Legionella: Which Temperatures Matter?
Calorifier at 60°C, return at 50°C, cold below 25°C: what WHO, CDC and HSE say.
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E. coli, chlorine, pH and temperature: the numbers the WHO ship guide gives and how to sample.
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WaterWhat Is a Water Safety Plan for a Yacht?
The three parts of a water safety plan and the key figures, from the WHO Guide to Ship Sanitation.
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SeasonalYacht Back in Service: A Hygiene Checklist After Winter or a Long Lay-Up
Flush, check, clean and record: a practical checklist based on CDC, EPA and WHO guidance.
Read the guide →GalleyYacht Galley Extraction Ducts: What the Rules Ask For and Why Grease Matters
What SOLAS II-2/9.7.5.1 asks for on galley exhaust ducts, and what it means for grease cleaning.
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WaterHow Often Should a Yacht’s Fresh-Water Tanks Be Inspected and Disinfected?
What the WHO Guide to Ship Sanitation says about tank inspection, the 50 mg/l disinfection step and flushing.
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Air conditioningHow Often Should a Yacht’s Air Conditioning Be Cleaned?
What maritime guidance and public-health bodies say about checking filters, cleaning coils and condensate trays, and keeping humidity down.
Read the guide →Water hygieneLegionella on Yachts: How It Grows, How It’s Tested and How to Control It
Where Legionella develops in a yacht’s fresh-water system, how it is tested to ISO 11731, and the temperature and flushing rules that keep it under control.
Read the guide →More guides on HVAC hygiene, fresh-water systems and galley extraction are on the way. In the meantime, see what we do and the problems we solve.
We publish what we can source and stand behind. If a rule does not say something, we do not pretend that it does.
Francesco Colombo
CEO · AirBio Marine, a division of AirBio (Ekonore S.r.l.)
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