Donnelly J. D.

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Donnelly
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J. D.
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  • Working Paper
    Alvin users manual
    (Woods Hole Oceanographic Institution, 1976-11) Bland, Edward L. ; Donnelly, J. D. ; Shumaker, Lawrence A.
    In order to plan a successful cruise utilizing the ALVIN/LULU system it is important for the user to understand the capabilities and limitations of the system. The Deep Submergence Engineering and Operations Section provides this manual as a means for the user to become familiar not only with the deep submersible ALVIN and its mother ship LULU, but also with the constraints put on the system by the environment, both above and below the ocean surface, and by geographic considerations. We strongly urge that, after reading this manual, potential ALVIN users contact us to discuss their plans and objectives. Such detailed discussion with experienced members of our group often lead to improved methods for accomplishing scientific objectives.
  • Working Paper
    Alvin battery charging procedures
    (Woods Hole Oceanographic Institution, 1975-04) Hosom, David S. ; Donnelly, J. D. ; Page, W.
    The following procedures are currently used for initial activation and routine maintenance on the lead acid storage batteries used on the DSRV ALVIN.
  • Working Paper
    Alvin gyrocompass performance report : 5 June 1974 to 15 September 1974
    (Woods Hole Oceanographic Institution, 1975-05) Hosom, David S. ; Donnelly, J. D.
    This report documents the performance of two gyrocompasses used on ALVIN between 5 June and 15 Sept., 1974. During this period ALVIN participated in Project FAMOUS and completed a series of dives on the new England Sea Mounts. A Gyrosystems, Inc., Model 800 gyrocompass was used from June 5th until August 9th. A Sperry Marine Systems Company subminiature gyrocompass was used from August 9 through September 15. The Sperry and Gyrosystems compasses provided an accuracy within several degrees when cmpared to the ship's compass. The data does not represent a controlled evaluation since it was impossible to take reading simultaneously on ALVIN's and the support ship's compasses. Therefore this report should be considered as an at sea operational evaluation. Within the limitations of the evaluation and using the method described for calculating "offset" and "average error" the following summary comparison can be made. The Sperry gyrocompass had an average error of about 1.4°. The Gyrosystems Model 800 had an average error of 4.6°.