• Login
    About WHOAS
    View Item 
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • WHOI Technical Reports
    • View Item
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • WHOI Technical Reports
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of WHOASCommunities & CollectionsBy Issue DateAuthorsTitlesKeywordsThis CollectionBy Issue DateAuthorsTitlesKeywords

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    A pop-up float recovery system for coastal oceanographic tripods

    Thumbnail
    View/Open
    WHOI-89-52.pdf (4.331Mb)
    Date
    1989-11
    Author
    Dunn, Christopher V. R.  Concept link
    Gordon, Allan G.  Concept link
    Metadata
    Show full item record
    Citable URI
    https://hdl.handle.net/1912/6450
    DOI
    10.1575/1912/6450
    Keyword
    Oceanographic instruments
    Abstract
    The recovery package described here was used as the primary retrieval system to recover tripod instrument platforms from a depth of 90 meters. The device uses dual in-line burn wires, one of which is acoustically commanded from the surface ship. The other is set to release by back-up timer, ensuring recovery in the event of a poor acoustic command channel. The burn wire activates spring loaded cam latches which release the float package and pull a ~ inch Dacron line to the surface. The float package is recovered and the line is used to winch the tripod to the surface for recovery by the ship's crane. Major benefits of the system are reliability, low cost, light weight, and use of many off-the-shelf components. The float package provides 50 pounds of buoyancy and is fabricated using commercial fish trawl net floats. The retrieval line container is separate from the float assembly, and is fabricated from plastic storage containers. The line is coiled and restricted to prevent unpackaging due to waves or current action. The system described here is not appropriate in areas of high current or great depth due to drag and dead weight of the lift line.
    Collections
    • Applied Ocean Physics and Engineering (AOP&E)
    • WHOI Technical Reports
    Suggested Citation
    Dunn, C. V. R., & Gordon, A. G. (1989). A pop-up float recovery system for coastal oceanographic tripods. Woods Hole Oceanographic Institution. https://doi.org/10.1575/1912/6450
     

    Related items

    Showing items related by title, author, creator and subject.

    • Thumbnail

      Predicting sonic pulse shapes of underwater spark discharges 

      Caulfield, David D. (Woods Hole Oceanographic InstitutionWoods Hole Oceanographic Institution, 1962-03)
      Measurements of the acoustic pressure of spark discharges were made at a shallow depth (10 feet) for various voltages, stored energies, inductances and capacitances of the system, and electrode areas. The voltages ranged ...
    • Thumbnail

      Little Ice Age climate in the Western Tropical Atlantic inferred from coral geochemical proxies 

      Alpert, Alice (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2016-09)
      Paleoclimate archives place the short instrumental record of climate variability in a longer temporal context and allow better understanding of the rate, nature and extent by which anthropogenic warming will i ...
    • Thumbnail

      Interaction of high frequency internal waves and the boundary layer on the continental shelf 

      Sanford, Lawrence P. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1984-08)
      Intermittent, shoreward propagating packets of high frequency first mode internal waves are common on the continental shelf when the water column is stratified and may induce large fluctuations in near bottom velocity. ...
    All Items in WHOAS are protected by original copyright, with all rights reserved, unless otherwise indicated. WHOAS also supports the use of the Creative Commons licenses for original content.
    A service of the MBLWHOI Library | About WHOAS
    Contact Us | Send Feedback | Privacy Policy
    Core Trust Logo