Abstract: A stretcher and litter combination, including a buoyant raft-like structure adapted for use as a rescue or recovery litter, and a buoyant stretcher. The litter has pontoons on either side of an elongated body section. The stretcher is in the form of an elongated board releasably secured to the body section of the litter.

Abstract: A planisphere including a navigation west and east dial and scales, sky map, Greenwich and transit indicator dials having an Ariers indicator, a Greenwich indicator and a transit scale indicator respectively thereon, and a reference rule, constructed and arranged to facilitate programming of the elements thereof to provide an automatic computerized reading directly of local hour angle of stars from a local hour angle scale of the sky mask dial for entering sight reduction tables for navigation purposes. The planisphere also includes specific time zone indications to facilitate correct programming thereof and a declination scale on the reference indicator for determining declination of stars. The transit scale indicator includes opaque and transparent portions arranged so that scales of the planisphere are completely visible on one side or the other of the planisphere.

Abstract: A device for suspending a raft from a transport such as a helicopter so that the raft can be lowered and raised into and out of the water without subjecting persons attending or occupying the raft to an electric shock from a static charge that may be carried by the transport. The device comprises a metal plate attachable to the transport having straps provided with snap fasteners releasably attachable to the raft. A ground wire connected to the plate is sufficiently longer than the straps so as to contact the water and ground the transport before the straps contact the raft.