This new Code was published in 1899 and brought into force on 1st January, 1901, the old Code being used concurrently with it until the 31st December of that year. It has now reached the seventeenth edition, and a complete revision of it, which will probably entail the alteration of many of the flags, is occupying the attention of an International Commission, but it will be several years before this is brought into use.
In making a signal, a ship first hoists her ensign with the code flag under it, and if necessary the distinguishing signal of the vessel or station with which she desires to communicate. On seeing this signal the ship (or station) addressed then hoists the "Answering Pendant" (i.e. the Code flag) at the "Dip," that is, some little distance below its position when hoisted "close up" to the block at the masthead or yardarm through which the signal halliards are rove. The first ship then hoists her own distinguishing signal, consisting of the four letters appropriated to her name, and then proceeds with the signal she wishes to make. When the first hoist is noted down and translated in the ship receiving the signal, this ship hauls the answering pendant "close up" to show that the signal is understood and keeps it there until the signalling ship has hauled that hoist down; the answering pendant is then again lowered to the "Dip" until the next hoist is disposed of, and when the ship signalling has finished, she hauls down her ensign to indicate that the message is at an end.
Among signals of distress by means of flags—which from their nature are of international use and common to both men-of-war and merchant ships—the earliest appears to have been made by tying the ensign in a knot in the middle, or making a weft as it was called. Another, which appears to have been in use in the seventeenth century, was to invert the ensign; this, of course, could not be done with those ensigns (such as the modern French) which are symmetrical in design. The signal appears sometimes to have been given by placing the ensign in an unusual position, such as at the main topmast-head or in the shrouds. An instance in which the ensign was placed inverted in the shrouds will be found on [page 199].
FOOTNOTES:
[338] Herodotus, vii, 128.
[339] Thucydides, i, 49.
[340] Ibid. ii, 84; vii, 34.
[341] Thucydides, iii, 90.
[342] Polyaenus, Strategemata, i, 48 (2).
[343] Livy, xxxvii, 24: "Eudamum in alto multitudine navium maxime Hannibal, ceteris omnibus longe praestantem, urgebat; et circumvenisset ni signo sublato ex praetoria nave, quo dispersam classem in unum colligi mos erat, omnes quae in dextro cornu vicerant naves ad opem ferendam suis concurrissent."