When crew regularly enter high-noise areas
Noise & Acoustics · SERVICE 09
Onboard Personal Noise Exposure Monitoring
Area measurements show how noisy a space is; personal dosimetry shows the exposure a person accumulates while moving through a real working day. Vessel Doctor monitors representative crew roles and tasks to identify the activities, locations and durations that contribute most to daily occupational noise exposure.
ACOUSTIC FIELD MAPPINGClear evidence→
VESSEL DOCTOROnboard Personal Noise Exposure Monitoring
SURVEY PROFILENoise & Acoustics
09/19
Original category-specific diagnostic visual
01
WHY THIS SURVEY MATTERS
Evidence before assumption.
Engineers, deck crew, maintenance teams and other personnel may experience short high-level tasks combined with lower exposures across a shift. Personal monitoring supports evidence-based hearing conservation, task planning, protection selection and evaluation of engineering or administrative controls.
02
MEASUREMENT SCOPE
What we measure.
- ✓Personal daily noise exposure and dose
- ✓Equivalent continuous exposure level
- ✓Maximum and peak levels where required
- ✓Task, location and time history
- ✓Representative work groups or job functions
- ✓Hearing-protection use and relevant work observations
03
TIMING & APPLICATION
When to request it.
Following changes to machinery or work practices
To validate a hearing-conservation programme
After occupational-noise complaints or concerns
When area measurements cannot represent mobile work
To evaluate controls before and after implementation
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.
- ✓Monitoring strategy and selected exposure groups
- ✓Dosimeter configuration and calibration checks
- ✓Individual and group exposure results
- ✓Task-based contribution analysis where recorded
- ✓Evaluation against the agreed occupational criteria
- ✓Control priorities following the hierarchy of controls
06
STANDARDS & PROJECT CRITERIA
The governing basis comes first.
Use the IMO Code on Noise Levels on Board Ships where applicable, the relevant flag/occupational requirements, ISO 9612 principles where appropriate and personal sound exposure meters compliant with IEC 61252. Confirm criterion level, exchange rate and threshold before interpreting dose.
Important
Explore our standards directory↗Acceptance remains subject to the applicable flag administration, classification society, contract, vessel specification and authorised reviewing party.
ASIA + WORLDWIDE ATTENDANCE
Onboard Personal Noise Exposure Monitoring 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.
01How is personal monitoring different from noise mapping?+
A noise map describes spaces; a dosimeter follows a worker and integrates exposure over time.
02How many crew members must be monitored?+
The number depends on work groups, task variability and the confidence required. Representative selection is more important than an arbitrary percentage.
03Can a dosimeter be worn during normal duties?+
Yes, provided it is mounted correctly and does not interfere with safety or work.
04Does wearing hearing protection reduce the measured dose?+
A shoulder-mounted dosimeter normally measures external exposure. Protection effectiveness is assessed separately using suitable methods and assumptions.
START A TECHNICAL DISCUSSION
Plan your onboard personal noise exposure monitoring.
Share the vessel, location, operating condition and reporting purpose. We will help shape a focused, technically defensible survey scope.