T&R Bulletin 2-29A together with the underlying ANSI documents supersedes the existing SNAME T&R Bulletins 2-25 and 2-29 and SNAME Codes C1, C4, and C5.
This Bulletin supplements ANSl documents S2.19, S2.25, S2.26,S2.27, S2.28 and S2.29 pertaining to ship vibration. The ANSl documents contain guidelines for the measurement and evaluation of structural and machinery vibration on ships. They also specify data acquisition and processing procedures which will result in consistent and reliable data to compare with the guidelines. However, the ANSl documents do not provide a lot of detail about how to make the vibration measurements or do the analytical calculations that are required.
This T&R Bulletin is designed to assist in understanding the rationale for many of the requirements, and help the reader in choosing the appropriate techniques for the required measurements and calculations. Where appropriate, it discusses standards issued by other organizations, and references texts, reports, etc. where more detail can be found, particularly for the analytical prediction of vibration magnitudes.