Detection of Isolated Vibration Spectrum Patterns Generated in Hull and Shafting Lines which Result Shipboard Faults

Main Article Content

Prasad Milinda Dasanayaka, LCdr(E)
Ranjan Perera, Dr.


The origin of shipboard hull vibrations is dominantly determined by vessels propulsion system, main machinery, auxiliary systems, pumps, breaking of the waves at the ship hull, etc. When the ships are classified on various sizes and limitations, they demonstrate multiple characteristics of vibration signatures mainly based on the functionality of main machinery and ships’ hull. The vibration signatures generated from hull is a clear representation of the ships health and crew habitability.

 The paper is focused on to a case study that the hull of a naval vessel which had undergone a major repair was inspected for suitability for further use in terms of vibration and habitability. The transferred vibration signature of the vessel was analyzed using vibration spectra in machinery and hull aspects. The measuring was done simultaneously with multi-channel measurements of the vessels vibrations at few characteristic positions.

 Sea trials at following variable conditions had been carried out onboard the selected vessel.

Sea State : 2-3;

Loading Condition : Half Load;

Wind Condition : Moderate< 15 knots;

Sea Direction : Ahead, Astern


Download data is not yet available.

Article Details

How to Cite
Dasanayaka, P., & Perera, R. (2018). Detection of Isolated Vibration Spectrum Patterns Generated in Hull and Shafting Lines which Result Shipboard Faults. International Journal for Innovation Education and Research, 6(2), 247-255. Retrieved from


[1] Edward F Noonan (1990), Ship Vibration Design Guide
[2] Andrzej Zak (2008), Ships classification basing on acoustic signatures,WSEAS transactions on signal processing Issue 4, Volume 4, April
[3] Christopher N (2002), An Introduction to Ship Radiated Noise, Acoustics Australia, Vol 30 April
[4] Sukhnov SO, Maluitin AA, Myshinsky E, (2000), Reduction of Propeller Induced Hull Vibration, The international Congress and Exhibition on Noise Control Engineering, France
[5] Moro L, Biot M, Borocco E, et al.,(2013), Hull vibration analysis of River Boats, International Conference IDS2013- Amazonia
[6] Pan J, Farag N, Lin T, et al., 2002, Propeller Induced Structural VibrationThrough the Thrust Bearing, Annual Conference of Australian Acoustical Society
[7] Guidance Notes on Ship Vibration (April 2006), American Bureau of Shipping
[8] ISO 6954: 2000, “Guidelines for the measurement, Reporting and Evaluation of Vibration with regard to Habitability on Passenger and Merchant Ships”
[9] ISO 20283-2: 2008, "Mechanical vibration-Measurement of Vibration on Ships, Part 2: Measurement of Structural Vibration"
[10] Rules for Classification of Ships 2004– Vibration Class (Part 6 Chapter 15) Det Nortske Veritas