Regulation 117(1) A manager shall ensure that a dredge used at the mine is equipped with (a) adequate and suitable fire-fighting equipment; (b) adequate guard rails to prevent any worker from falling over the edge into the water;(c) a suitable gangplank for exit to a permanent walkway; (d) a ladder on each side of the dredge that extends from the deck to the water level for rescue purposes; (e) an adequate means of exit from the engine room and control cabin; and(f) an effective means of communicating with workers on the dredge.(2) Where a worker is required or permitted to be on a dredge in the mine that is not connected to the shore by a walkway, the manager shall ensure that at least two suitable boats, one based at the dredge and the other based at the shore, are available for immediate use and that a suitable landing bay is also provided at the shore.(3) The manager shall ensure that in the mine,(a) flammable materials, other than lubricant and fuel necessary for twenty-four hours of operation, are not stored on a dredge; and(b) every dredge is equipped with a lightning protection system.