Admiralty in the 17th century

During the early 17th century, England's relative naval power deteriorated; in the course of the rest of the 17th century, the office of the Admiralty and Marine Affairs steered the Navy's transition from a semi-amateur Navy Royal fighting in conjunction with private vessels into a fully professional institution, a Royal Navy. Its financial provisions were gradually regularised, it came to rely on dedicated warships only, and it developed a professional officer corps with a defined career structure, superseding an earlier mix of sailors and socially prominent former soldiers.