The present invention relates generally to the field of retrieval of sunken objects and also to the field of securing and lifting devices. Attachment of lifting lines to sunken objects using remote controlled manipulators is one of the most difficult tasks involved in recovering objects from the deep ocean. This is often a very difficult task if the object is partially buried in mud or sand. The present invention was developed to assist in inserting slings under partially buried objects. The present invention is particularly useful for inserting a lift sling under objects resting in sand or mud. Features of the sling include a lightweight jetting tube supported and guided by a special sling holder assembly. The sling is attached to the nozzle end of the jetting tube and is pulled under the object as the jetting tube is advanced. Jetting water is provided by a vehicle mounted pump through a hose with a manipulator operable quick disconnect fitting. Once the sling has been drawn under the object to be recovered, a rope attached at one of its ends to the sling holder assembly can be looped over the object and through an eye in the opposite end of the lift sling to cinch or choke up the sling around the object.
Lift Sling Emplacement Device
1981
14 pages
Report
No indication
English
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