CONTENTS 



PART TWO 

 SNAME HS-2-1 Program 



Page 



I. CODE FOR SHIPBOARD HULL VIBRATION MEASUREMENTS 23 



Objective 23 



Scope 23 



Factors Affecting Test Requirements 23 



Test Requirements 24 



Test Procedure 25 



Analysis and Reporting of Data 27 



Test Report Form 29 



II. SAMPLE TEST REPORT 30 



General 30 



Ship Characteristics 31 



Ballast Plan on Sea Trials 34 



Instrumentation 37 



Calibration 42 



Test Procedure 45 



Recording Procedure 45 



Data Reduction Procedures 46 



Test Results 47 



Test Data-Steady Speed (Straight Course) Runs 48 



Test Data-Maneuvering Runs 50 



Test Plots -Vibration Amplitudes versus RPM 51 



22 



