Abstract: Described herein are methods and devices for underwater deployment of a structure. For example, the embodiments described herein are particularly focused on sonobuoys that are configured for autonomous deployment in an underwater environment. One embodiment provides a sonobuoy having a plurality of arms, which are in some embodiments telescopic. The sonobuoy is configured such that, upon deployment in an underwater environment, the arms extend and rotate from a collapsed storage configuration to an operative configuration. The rotation is brought about by way of tension in petal lines, which extend between an innermost telescopic segment of each arm and a central tether line intermediate the arms and a buoyancy device.

Abstract: Described herein are methods and devices for underwater deployment of a structure. For example, the embodiments described herein are particularly focused on sonobuoys that are configured for autonomous deployment in an underwater environment. One embodiment provides a sonobuoy having a plurality of arms, which are in some embodiments telescopic. The sonobuoy is configured such that, upon deployment in an underwater environment, the arms extend and rotate from a collapsed storage configuration to an operative configuration. The rotation is brought about by way of tension in petal lines, which extend between an innermost telescopic segment of each arm and a central tether line intermediate the arms and a buoyancy device.