The term "Action Stations" was a battle condition in which a Royal Navy vessel manned all of its guns with gun crews, stood up damage control and emergency medical teams, and called the ship's senior officers to the quarterdeck in order to direct the ship in battle. A sailor's action station was independent of their watch station or division, although in many cases groups of sailors manning the same action station were assigned from the same division or watch section. A unique readiness condition of some Royal Navy vessels was known as "in ordinary". Such vessels were usually permanently moored with masts and sails removed and manned only by a skeleton crew. In ordinary vessels did not maintain full watch sections and were normally maintained as receiving ships, shore barges, or prison ships.  1748–67 The first uniforms of the Royal Navy were issued to commissioned officers only and consisted of a blue dress uniform or 'suit', which featured 'boot cuffs'; based upon formal court wear of the time,  and a 'frock', which was a simpler uniform that featured 'mariners cuffs' which were used to turn back the cuffs of the coat when strenuous or dirty work was being done. The frock also featured (unlike the single-breasted suit) double-breasted lapels that could be worn either buttoned back or worn buttoned across the chest to protect the wearer from the elements. Both the dress suit and frock worn by lieutenants were rather plain, the dress suit featuring plain white boot cuffs and the frock being plain blue with no other distinction. Although included in the 1748 dress regulations, midshipmen were only issued with a frock to act as an all-purpose uniform. This featured (from 1758) the white 'turnback' that is still used as rank insignia for midshipmen to the present day. Both the dress 'suit' and undress 'frock' uniforms were worn with blue breeches and black cocked hats; which were gold-laced and featured a black cockade.  1767–1774 The next major change in Royal Navy uniforms occurred in 1767 when the dress uniform 'suit' was abolished, and the frock became an all-purpose uniform. This state of affairs continued until 1774; when the former frock became the full dress uniform, and a new working or 'undress' uniform was introduced. Enlisted sailors had no established uniform, but were often issued standardised clothing by the ship on which they served to create a uniform appearance among seaman.  1774–1787 In this year the former 'all-purpose' uniform became full dress.