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Underway Replenishment (UNREP)

Page 10 of 14
  • Riding lines. Four inch manila lines about 45 to 60 feet long that are used for hogging to prevent double heads from popping out due to weight.
  • Tie-down lines.  Lines used to secure various rigs and hoses.
  • Easing out line. A line with a bight on one end that is thrown over the hook on a delivery hose, and then run back to and secured to a cleat. It is used to retrieve the hose during high line operations.
  • Contour lights. Lights used to show the contour of the delivery ship. Two blue lights are shown by the control (delivery) ship during the approach and while the receiving ship is alongside. If the control ship is over 600 feet in length, a third blue light is used. Six red lights are displayed in a horizontal line along the deck edge or on a level with the highest obstruction outboard of the receiving stations landing or work area.
  • Whips. Wires 1/2 or 3/4 inches in diameter with a minimum length of 450 feet that are used for heaving in or slacking off.
  • Hose saddles. Devices used on hose rigs to keep the 7-inch hose from kinking. The Type A hose saddle is 19 inches long and is used with a single hose rig. The Type B hose saddle is 32 inches long and is used with the upper hose on the two hose rig.
  • Trolley. Connected to hose saddles and rides the span wire. It is used to bring the hose over from the delivery ship.
  • Ram tensioner.  A hydraulic device used to keep a constant strain on the span wire. It consists of a ram cylinder, accumulator cylinder, air flasks, and an indicator assembly.
  • STREAM (Standard Transfer REplenishment Alongside Method). There are two basic STREAM rigs, the surf and concord. Both are equipped with two hauling winches and are used for transferring cargo and ammunition.
    • STREAM cargo drop reel. A device that lowers the load from the tensioned highline allowing the STREAM rigs to be used by ships having only fixed pad eyes, a pendant station, or support legs. It is provided by the delivery ship and is attached to the STREAM trolley.
    • STREAM sliding pad eye. Raises and lowers the attachment pad eye, bringing the rig down to the deck.
    • STREAM support leg. Combines the features of a fixed pad eye and pendant receiving station. It is usually installed on aircraft carriers.