Newbuilding acoustic acceptance
Noise & Acoustics · SERVICE 07
Onboard Sound Insulation and Sound Reduction Index Testing
Low noise inside one space does not guarantee adequate acoustic privacy or protection between adjacent spaces. Doors, bulkheads, penetrations, ceilings, ventilation paths and workmanship can create transmission paths that weaken an otherwise well-designed partition. Vessel Doctor measures airborne sound insulation between selected vessel spaces and helps identify why performance falls below the agreed requirement.
ACOUSTIC FIELD MAPPINGClear evidence→
VESSEL DOCTOROnboard Sound Insulation and Sound Reduction Index Testing
SURVEY PROFILENoise & Acoustics
07/19
Original category-specific diagnostic visual
01
WHY THIS SURVEY MATTERS
Evidence before assumption.
Sound insulation affects rest, privacy, speech disturbance and the separation of noisy workspaces from accommodation. Testing is particularly valuable at newbuilding handover, after accommodation modification or when occupants report that voices, entertainment systems or operational noise are easily heard through partitions.
02
MEASUREMENT SCOPE
What we measure.
- ✓Source-room and receiving-room sound levels
- ✓Background noise in the receiving space
- ✓Frequency-dependent level difference
- ✓Reverberation time or equivalent absorption where the method requires it
- ✓Weighted sound reduction or apparent sound insulation rating
- ✓Leakage indicators around doors, seals, penetrations and ventilation paths
03
TIMING & APPLICATION
When to request it.
Cabin-to-cabin privacy complaints
Noisy-space to accommodation verification
After bulkhead, door or ceiling modification
Investigation of flanking transmission
Corrective-work verification
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.
- ✓Tested partition and space schedule
- ✓Source, receiving and background measurement results
- ✓Frequency-band analysis and calculated rating
- ✓Evaluation against the agreed requirement
- ✓Observed leakage paths and workmanship concerns
- ✓Targeted acoustic-improvement recommendations
06
STANDARDS & PROJECT CRITERIA
The governing basis comes first.
Apply the IMO Noise Code, applicable class/contract criteria and the method required by the project. Where accepted, use relevant editions of ISO 16283-1 for field measurement and ISO 717-1 for rating; older contracts may specify legacy ISO 140 methods. Confirm the governing method before testing.
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 Sound Insulation and Sound Reduction Index 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.
01Is sound reduction index the same as room noise level?+
No. Room noise measures the sound present in a space; sound insulation measures how effectively a separating construction reduces transmission between spaces.
02Can you test cabin doors separately?+
The field result normally represents the complete separating construction, including the door and flanking paths. Component testing requires a different method.
03What commonly causes poor performance?+
Door seals, unsealed penetrations, back-to-back sockets, ceiling voids, ventilation transfer paths and rigid structural connections are frequent contributors.
04Can the survey recommend repairs?+
Yes. Recommendations can prioritise likely leakage and transmission paths, followed by verification testing after corrections.
START A TECHNICAL DISCUSSION
Plan your onboard sound insulation and sound reduction index testing.
Share the vessel, location, operating condition and reporting purpose. We will help shape a focused, technically defensible survey scope.