Noise & Vibration

Machinery isolation, structural vibration, acoustic control, measurement and quiet-yacht engineering.

Engineer

Superyacht Airborne Noise & Acoustic Measurement: Sound Pressure, A-Weighting, Octave Bands & Fault Diagnosis

Airborne noise measurements quantify pressure fluctuations in yacht spaces and around machinery, allowing engineers to distinguish tonal, broadband and transient sound and compare results across operating conditions. Reliable diagnosis depends on calibrated microphones, consistent measurement positions, appropriate frequency and time weighting, octave-band analysis, background-noise control and a clear distinction between sound pressure, sound power and structure-borne vibration.

Last verified: Aug. 9, 2026

Engineer

Superyacht Engine, Gearbox, Shaft-Line & Propulsion Vibration: Orders, Alignment, Whirling & Fault Diagnosis

Propulsion-train vibration can originate in engines, reduction gears, couplings, shafts, bearings and propellers, with each component interacting through the connected driveline and supporting structure. Reliable diagnosis depends on relating measured frequency and order content to engine firing, gear mesh, shaft speed, torsional, axial and whirling behaviour, propeller excitation, bearing loads and structural resonance while comparing results across speed and load.

Last verified: Aug. 9, 2026

Engineer

Superyacht HVAC, Ventilation & Fluid-Borne Noise: Fans, Ducts, Pumps, Pipework & Fault Diagnosis

HVAC and fluid systems can transmit noise through air, ductwork, pipework and supporting structure, allowing fans, dampers, pumps and turbulent flow to become audible far from the original source. Reliable diagnosis depends on separating aerodynamic, mechanical and fluid-borne excitation, relating tones and broadband noise to fan or pump operating condition, checking silencers and flexible connections, controlling cavitation and hydraulic transients, and tracing the actual transmission path before corrective work.

Last verified: Aug. 9, 2026

Engineer

Superyacht Machinery Mounts, Isolation & Structure-Borne Vibration: Stiffness, Deflection, Resonance & Fault Diagnosis

Resilient machinery mounts reduce the transmission of vibration and structure-borne noise from engines, generators, pumps and other equipment into the yacht structure. Reliable isolation depends on correct mount selection, load distribution, stiffness and static deflection, adequate separation between forcing and natural frequencies, sound foundations, flexible service connections and disciplined diagnosis of collapsed mounts, hard contact, short-circuit paths and resonance.

Last verified: Aug. 9, 2026

Engineer

Superyacht Machinery Vibration Measurement & Frequency Analysis: Accelerometers, FFT, Orders & Trending

Machinery vibration measurements turn movement at bearings, casings and structures into repeatable condition data that can be compared across speed, load and time. Reliable diagnosis depends on consistent sensor location and direction, suitable acceleration or velocity measurements, frequency and order analysis, recognition of harmonics and resonance, and disciplined trending against a known healthy baseline rather than isolated amplitude readings.

Last verified: Aug. 9, 2026

Engineer

Superyacht Propeller Cavitation, Pressure Pulses & Hull Vibration: Wake, Blade Rate, Erosion & Fault Diagnosis

Propeller cavitation and fluctuating hydrodynamic loading can transmit pressure pulses into a superyacht's stern structure, producing vibration and noise even when the shaft line itself is mechanically healthy. Reliable diagnosis depends on understanding wake non-uniformity, blade-rate excitation, cavitation behaviour, tip clearance, propeller condition, vessel loading and the structural response measured across speed and power.

Last verified: Aug. 9, 2026