There are many customs and traditions associated with the Royal Navy of the United Kingdom, many of these traditions have carried on to other Commonwealth navies, such as Canada, Australia and New Zealand. These include formal customs including separate crests associated with ships, ensigns and fleet reviews. There are also several less formal customs and traditions including Naval slang commonly referred to as Jack Speak and the traditional games of Uckers and Euchre. Winston Churchill probably never dismissed the customs of the Royal Navy as "..nothing but rum, sodomy and the lash.”
Commissioned ships and submarines wear the White Ensign at the stern whilst alongside during daylight hours and at the main-mast whilst under way. When alongside, the Union Jack is flown from the jackstaff at the bow, but can only be flown underway on special circumstances i.e.: when dressed with masthead flags (when it is flown at the jackstaff), to signal a court-martial is in progress (when it is flown from the starboard yardarm) or to indicate the presence of an Admiral of the Fleet,including the Lord High Admiral or the Monarch (when it is flown from the highest hoist).
The Royal Navy assigns badges to every ship, submarine, squadron and shore establishment. Prior to the age of steam ships, ships were identified by their figurehead. With the removal of the figurehead, ships badges and mottos were created to graphically represent the ships. The official process for creating the badge was initiated by Charles ffoulkes after World War I who was appointed as the Admiralty Advisor on Heraldry. Soon after his appointment The Ships' Badges Committee was established. This was amalgamated in 1983 with the Ships' Names Committee (founded in 1913) to create the Ships' Names and Badges Committee. The Naval Crown adorns the top of all the badges. The frame is gold rope. Originally, different classes of ships had different shapes, but currently all ships and submarines have a circular design. Shore establishments have an offset square design.
The Fleet Review is an irregular tradition of assembling the fleet before the monarch. For example, at the most recent Review on 28 June 2005 to mark the bi-centenary of the Battle of Trafalgar, 167 ships of the RN, and 30 other nations, were present. The fleet review in 2005 showed the marked contrast between the size of the Navy in 2005 compared to the last review in 1977. In total the Royal Navy had 67 ships on display, with the largest ship present being the French carrier Charles De Gaulle at over 200 feet longer than HMS Invincible.