But while in the English fleet the Banner of Council signal underwent no development until the end of the sixteenth century, the Mediterranean instructions of 1366 contain three signals of this nature: one to call the council, another to call all the ships when some order had to be communicated, and a third to call one or more particular vessels. These, with the addition of one signal for calling aid, one manoeuvring signal, and a recognition signal, to which were added signals by sails and, at night, by lanterns, contain the germ of a complete system of signalling. It is not until the middle of the seventeenth century that we meet with so advanced a system in the English navy. If an explanation of this be sought it will be found in the fact that the rowing galley was not suited to the waters of the English Channel and North Sea. If the Mediterranean nations had, in the Middle Ages, a comparatively advanced system of tactics and therefore--for the one inevitably follows the other--a comparatively complete method of signalling, it was because they had inherited the foundations of it with the galley from the Romans and Greeks. The sailing-ship did not assert its superiority over the older weapon until the early part of the sixteenth century, and it was another century before the seamen who manned it could be persuaded that the methods of tactics invented for the despised galley could be of use when applied to vessels whose motive power was of another order. It was the soldier-admirals, who were well acquainted with the value of formal tactics on shore, who taught the English navy the lesson it was so loath to learn. The Instructions of 1366 just quoted may be taken as representative of the fourteenth century. For the fifteenth century we have at least two good examples; the orders for the Venetian navy drawn up by Mocenigo[351] in the year 1420 and the orders for the navy of Castile drawn up by Fadrique Henriquez[352] in 1430. It will be sufficient to extract from the Venetian orders, which are the more interesting for our immediate purpose, the various articles relating to flag signals. Questi sono i ordeni et commandamenti dati per il magnifico M. Piero Mozenigo del mar Zeneral Capitan--1420-- 5. Quinto che andando à uela nulla Galia ardisca passar el fogo à Misser lo capetanio saluo quella Galia che sarà de guarda, ma tuttauia debia attendere à non spartirse da lui sotto pena de lire diese à zaschedun che contrefarà, massime quando se uorà raggattar. Misser lo capetano farà metter la bandiera al mezzo. In quella uolta à chi piaserà ragattar habbi libertà di poterlo fare non si luntanando da lui mia dò al più, sotto la detta pena. 13. Quando messer lo capitanio uorà domandar da parte el farà meter una bandiera in la popa, in quella fiada tutte le Galie se debia accostar à lui perche el possa saper el sò parer.