In this as in other cases England owed a great deal to the geographical position which saved her from the temptations and necessities besetting her rival. It is enough to say that from 1514 to 1544 the English fleet carried troops across the Channel or escorted the armies marching into Scotland, practically unresisted. This interval was, however, of great importance in the history of the navy. The establishment of the Navy Office was not completed till 1546, but the dockyards were more thoroughly organised, and were greatly extended. There was still very much to be done in the formation of a permanent service. A certain lingering confusion between the Navy Royal and the general shipping of the country probably accounts for the king's decision to leave the management of Deptford Dockyard in the hands of the Trinity House. But the tendency was always towards the formation of special services to be employed for definite ends. Although no regular naval service was as yet formed, the foundations were laid. Even when there was no expedition to be carried out against the French or the Scotch, the king took care never to leave the seas without their winter or their summer guard--small squadrons of vessels appointed to patrol the Straits and the Channel. This force was very small--in quiet times hardly exceeding six or seven little vessels, and the crews were hired only for the summer or winter commission. The fact that a man had commanded a ship in one or other guard did not give him any right to continued employment, but from the very nature of the case a certain continuity of service would arise. Officers who proved satisfactory, or had good friends at court, were employed again and again, and the king's captains began to be a recognised body; while it is safe to presume that there were some soldiers and mariners who found his service more acceptable than that of private employers, and who volunteered into it with regularity. It was during these years, too, that the first efforts to improve the construction of ships were made by the introduction of skilled shipwrights from the Italian ports. Of these Henry must have had a respectable staff in constant employment. When the =Mary Rose= was sunk at St. Helens, the efforts made to raise her were mainly directed by Italian workmen.