UC San Diego, Library, Special Collections and Archives > Scripps Institution of Oceanography Photographs > Stroked Out Position-The Heave Compensator aboard D/V Glomar challenger is shown in a partially stoked out position. The lower lifting block and piston rod supports the full weight of th drill string and the upper cylinder portion is linked to the traveling block. The system is designed to improve core and extend bit life by eliminating the movement and bottom pounding of the drill string due to vessel heave. This is accomplished by maintaining a constand hydraulic supporting under the piston as the compensating cylinder heaves with the vessel. Maximum working load is 600,000 pounds and maximum heave compensated 15 feet. Load variation at 400,000 pounds (plus or minus) 2,500 pounds

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Title
Stroked Out Position-The Heave Compensator aboard D/V Glomar challenger is shown in a partially stoked out position. The lower lifting block and piston rod supports the full weight of th drill string and the upper cylinder portion is linked to the traveling block. The system is designed to improve core and extend bit life by eliminating the movement and bottom pounding of the drill string due to vessel heave. This is accomplished by maintaining a constand hydraulic supporting under the piston as the compensating cylinder heaves with the vessel. Maximum working load is 600,000 pounds and maximum heave compensated 15 feet. Load variation at 400,000 pounds (plus or minus) 2,500 pounds
Creator
Deep Sea Drilling Project
Contributing Institution
UC San Diego, Library, Special Collections and Archives
Collection
Scripps Institution of Oceanography Photographs
Rights Information
Under copyright
Constraint(s) on Use: This work is protected by the U.S. Copyright Law (Title 17, U.S.C.). Use of this work beyond that allowed by "fair use" requires written permission of the UC Regents. Permission may be obtained from the UC San Diego Library program having custody of the work. Responsibility for obtaining permissions and any use and distribution of this work rests exclusively with the user and not the UC San Diego Library.
Use: This work is available from the UC San Diego Library. This digital copy of the work is intended to support research, teaching, and private study.
Rights Holder and Contact
UC Regents
Description
Special Collections & Archives, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/sca)
This digital image is a surrogate of an item from the SIO Deep Sea Drilling Project Records, 1961-1987
Type
image
Subject
Ships--Dynamic positioning systems
Drilling and boring
Oceanographic research ships
Deep-sea drilling ships
Deep Sea Drilling Project
Glomar Challenger (Ship)

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