BUOY (from the Dutch word "boei" * EN: buoy; DE: Boje, Schwimmer; FR: bouee, flotteur; ES: flotador, boya; RU: буй) is the floating, voluminous, anchored sign, with the fixed coordinates of the location. It is used within the marine mining craft for the indication of the contours of the deposit, of the approaches to this deposit, for the orderly rational mining of the excavation field by the marine extractive means, and so on.


  1.  the casing;
  2.  the mast;
  3.  the signaling device;
  4.  the meteorological instruments;
  5.  the rope;
  6.  the hydrological instruments;
  7.  the anchor.

Buoy (see the Figure) comprises the hollow body, which has been made of metal or polystyrene foam, which is equipped with the mast together with the signaling devices and meteorological instruments, the rope, on the brackets of which they fixate the hydrological instruments, and the anchor or the load with several anchors. There serve as the signaling devices the special colouration, the flashing light, the passive reflector, and the radio transmitter (radio beacon). The distance for the detection of the buoy is approximately 10 kilometres (during the roughness of the sea of up to 3 points), in case of the height of the passive reflector of 4 metres, and of the height of the radio direction finder on the vessel of 10-15 metres. They equip the buoy with the strap together with the float, for the retrieval of the buoy onto the board of the vessel during the relocations. Within the modern designs of the buoy, there is provided the possibility for the short duration (during the storms), or for the long duration (during the ice period), immersion into the water.