Crew or passenger complaints
Habitability & Environmental Quality · SERVICE 04
Onboard Indoor Air Quality Testing
The quality of air inside a vessel affects alertness, comfort, wellbeing and confidence in the accommodation environment. Enclosed spaces can be influenced by ventilation performance, occupancy, cleaning chemicals, maintenance activities, engine exhaust ingress, cargo-related sources, moisture and microbial growth. Vessel Doctor develops vessel-specific IAQ scopes for accommodation, offices, control rooms, medical rooms and other occupied spaces.

Original category-specific diagnostic visual
01
WHY THIS SURVEY MATTERS
Evidence before assumption.
Symptoms such as odour, headache, irritation, fatigue or stuffiness do not identify a single pollutant. A structured investigation combines measured contaminants, ventilation indicators, occupancy and observations to build a defensible picture of the indoor environment.
02
MEASUREMENT SCOPE
What we measure.
- ✓Carbon dioxide and carbon monoxide
- ✓Temperature and relative humidity
- ✓PM2.5, PM10 and other particulate fractions where required
- ✓Total volatile organic compounds
- ✓Formaldehyde and selected chemical parameters
- ✓Air velocity and ventilation indicators
- ✓Microbial air or surface parameters where included
- ✓Differential pressure or exhaust-ingress indicators when relevant
03
TIMING & APPLICATION
When to request it.
Persistent odour, irritation, condensation or visible mould
After refurbishment, painting or chemical treatment
Before delivery of a passenger or accommodation-intensive vessel
Following suspected exhaust or cargo-vapour ingress
As part of a habitability or HVAC investigation
04
SURVEY PROCESS
A controlled route from plan to finding.
Define
Confirm the decision, vessel condition and evaluation basis.
Prepare
Agree locations, safe access, instruments and operating matrix.
Measure
Capture traceable data with conditions documented during measurement.
Interpret
Evaluate against the agreed basis and isolate meaningful patterns.
Report
Issue findings, limitations and focused next actions.
05
TECHNICAL DELIVERABLE
What you receive.
- ✓Sampling strategy and location plan
- ✓Instrument and laboratory method details
- ✓Parameter-by-parameter results
- ✓Comparison with the agreed guideline or specification
- ✓Observations on ventilation, occupancy and potential sources
- ✓Practical corrective and verification recommendations
06
STANDARDS & PROJECT CRITERIA
The governing basis comes first.
Apply the relevant flag, class, owner and project requirements together with appropriate ISO 16000-series methods, exposure/IAQ guidance and accredited laboratory methods where sampling is required. Do not state that one universal IAQ limit applies to every vessel or jurisdiction.
Acceptance remains subject to the applicable flag administration, classification society, contract, vessel specification and authorised reviewing party.
ASIA + WORLDWIDE ATTENDANCE
Onboard Indoor Air Quality Testing wherever the vessel needs it.
Vessel Doctor coordinates this service for vessels in Singapore, India, Malaysia, Sri Lanka, Indonesia, Thailand, wider Asian maritime centres and ports worldwide. The scope can support technical managers, marine superintendents, ship agents, owners, operators, shipyards and consultants who need documented onboard evidence.
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SERVICE FAQ
Questions project teams ask.
Every scope is confirmed against the actual vessel, timing and decision requirement.
01Which parameters should be tested?+
The scope depends on symptoms, vessel activity, materials, ventilation and suspected sources. A targeted scope is usually more useful than testing every available parameter.
02How long does IAQ testing take?+
It depends on vessel size, number of spaces, operating condition and whether laboratory sampling is required.
03Can you investigate mould?+
Yes, an investigation may include moisture observations, microbial sampling and ventilation assessment where technically appropriate.
04Can testing be done while accommodation is occupied?+
Often yes; representative occupancy can improve interpretation, provided sampling does not disrupt safe operations.
START A TECHNICAL DISCUSSION
Plan your onboard indoor air quality testing.
Share the vessel, location, operating condition and reporting purpose. We will help shape a focused, technically defensible survey scope.
