Implementation a vessel engaged in mine clearance operation

A VESSEL ENGAGED IN MINE CLEARANCE OPERATION:
A vessel engaged in mine clearance operations shall in addition to the lights for a power driven vessel, exhibit:
– three all-round green lights or three balls. One of these lights or shapes shall be exhibited near the foremast head and one at each end of the fore yard.
– These lights or shapes indicate that it is dangerous for another vessel to approach within 1000 meters of the mineclearance vessel.