2.—The position of each mine having been determined, should be marked off by buoys.
3.—The utmost care should be taken to lay the electric cables, so that they shall be as far as possible away from the mines in the vicinity of which it may be necessary to take them, so as to lessen the liability of injury to them, by the explosion of the latter.
4.—The electric cables should be laid parallel, and never be allowed to cross directly over each other, otherwise the operation of underrunning them will be much complicated, also a certain amount of slack should be allowed to facilitate in picking the cables up for repair, &c.
5.—Every manner of device is to be used to conceal the electric cables, such as laying dummies, making detours inland, &c.
6.—All marks indicating position of the mines to be removed, after the mines have been placed in position.
7.—The identity of each cable and mine to be very carefully preserved throughout, by means of a number.
8.—A number of electro contact mines should be placed in advance of the leading line of mines, at irregular intervals, to prevent the enemy, having once ascertained the position of one mine of a line, from knowing within limits the position of the others of that line.
SYSTEMS OF DEFENCE BY SUBMARINE MINES.
