Tactical Trials of USS Plymouth Rock (LSD 29)
Abstract
The USS PLYMOUTH ROCK (LSD 29) is a high speed, steam turbine, twin-screw, twin rudder dock ship built by the Ingalls Shipbuilding Corporation, Pascagoula, Mississippi. The tactical trials were authorized by the Bureau of Ships, and were conducted on 23, 24, and 25 September 1955, off Rockland, Maine. Standard 540 degree turns were made using various approach speeds and rudder angles. Special turns were made while backing the inboard shaft. All turns were made with right rudder except for two check left turns. Acceleration runs were made to determine the relationship between time, speed and reach. Other runs were made to determine the relationship of the above quantities in decelerating from several speeds with varying throttle settings. During the acceleration and deceleration runs the throttles were manipulated to change the RPM as rapidly as permissible, either ahead or astern, without reducing the main steam line pressure at the throttles below the minimum established operating pressure. Special deceleration runs were made with five second and ten second delays between closing the ahead throttle and opening the astern throttle.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1956
- Accession Number
- ADA068735
Entities
People
- James A. Heffner