The launch and recovery system provides a dive wing and drogue assembly
that is towed behind a ship by cables. The dive wing imparts a downward
thrust to the drogue, so that the drogue is towed underwater, placing
tension on the cables. The cables become stiff due to the speed of the
ship and the weight and depth of the dive wing and drogue assembly, so
that the cables take on the character of rails. The boat or watercraft to
be launched is placed on a sling carriage that is slidably mounted on the
cables, so that the sling slides down the cables, launching the
watercraft in the stable wake of the ship. The watercraft is recovered by
tying a winch cable or line to the watercraft, winching the watercraft
back onto the sling, and winching the sling back onto the fantail of the
ship.