Look at any Royal Navy officer's sleeve and above the gold rank lace there is a loop — a small circle worked into the top ring. It is one of the most distinctive details in any uniform in the world, and it is not decoration.
It is called the Elliot's Eye
Also known as the executive curl. It appeared in the 1850s and its purpose was to identify officers of the executive branch — seaman officers, the ones who commanded ships and could take charge on the bridge.
Everyone else — engineers, surgeons, paymasters, instructors — wore the same gold rings but no curl, with coloured cloth between the stripes instead to show their specialisation. Purple for engineers, scarlet for medical, white for supply.
Then everyone got one
The distinction caused friction for the best part of a century. Engineers in particular objected to being visibly marked as non-executive when a modern warship could not move without them.
In 1955 the Royal Navy abolished the distinction. Every officer now wears the curl regardless of branch — with one exception. Chaplains wear no rank lace at all, on the principle that a chaplain is available equally to everyone aboard regardless of rank.
Where you see it
The curl appears on No1 dress jackets, mess dress and the reefer jacket — anywhere gold lace is worn on the cuff. Rank is read by counting the rings below it.
WRNS No1B Jacket British Royal Navy Women's Naval Officers Uniform
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Buying one
Cuff curls are worked into the sleeve, so an officer's jacket is manufactured for a specific rank — you cannot add or remove rings without a tailor. When buying, check the number of rings matches what you need.
Mess dress uses a different, finer lace than No1 dress, and the two are not interchangeable.
RN Royal Navy Naval Officers Flag Silver Mess Dress Buttons RN 19.1mm 30L AS
Reading the rings
Count the lace below the curl and you have the rank:
- One thin ring — Midshipman has none; Sub-Lieutenant carries one.
- Two rings — Lieutenant.
- Two and a half — Lieutenant Commander. The half-ring is thinner, and it is where the nickname "two and a half ringer" comes from.
- Three — Commander. Four — Captain.
- Above that — a broad band with rings above it for flag officers.
The coloured cloth
Between 1863 and 1955, the cloth showing between an officer's rings told you his branch. Purple for engineers, scarlet for medical, white for supply and secretariat, silver-grey for nursing, green for electrical.
Executive officers had nothing between the rings, and the curl. Everyone else had colour, and no curl.
Those distinction cloths are why older RN uniforms turn up with unexpected colours in the lace — and why they date so precisely. Coloured lace means pre-1955, full stop.
Not just the Royal Navy
The curl spread with the Royal Navy's influence. Commonwealth navies adopted it — Australia, New Zealand, Canada, India, Pakistan, South Africa — and several others copied it outright.
The United States Navy did not. American officers wear a star above the rings instead, which is the quickest way to tell an RN sleeve from a USN one in a photograph.
Buying an officer's jacket
The rank is built in, so what you buy is what it is. Two things worth checking: whether the lace is gold wire or gold-coloured synthetic (older jackets use real wire, and it tarnishes rather than peels), and whether the buttons match the branch.
Mess dress lace is finer than No1 dress lace. They look similar in a photo and are not interchangeable in person.
The Royal Navy set the template
Gold sleeve rings (sometimes called "curls" because of the distinctive loop on the top stripe, officially the "executive curl") were adopted by the Royal Navy in the 19th century as a clear, at-a-glance rank system — the number of rings indicating seniority, with a narrower "half ring" marking the intermediate ranks. As the world's dominant naval power through that period, the Royal Navy's uniform conventions became the reference point that many other navies, including Commonwealth and allied forces, built their own systems on.
Genuine Royal Navy Mess Dress jacket, Lieutenant Commander cuff curls clearly visible.
Not every branch wears it the same way
The executive curl itself is traditionally an "executive branch" mark — worn by seaman officers, the ones eligible for command at sea — while other branches historically distinguished themselves with a strip of coloured cloth between the gold rings rather than the curl itself: scarlet for the medical branch, for example. It's a subtle detail, but it means two officers can wear an identical ring count and still be signalling a different branch and role, not just identical seniority.
How far the template spread
Because so many navies were either founded directly from the Royal Navy or built their early officer corps around its conventions, the ring-and-curl system (or a close variant of it) turns up right across the Commonwealth — Australia, Canada, New Zealand and others all use recognisably similar sleeve ring systems today. Even navies with no direct Royal Navy lineage often converged on a broadly similar idea — gold rings, more rings meaning more seniority — simply because it's such a practical, visible system once one major navy had proven it worked.
Why it still matters
Once you know how to read Royal Navy cuff rings, you can tell a Lieutenant Commander from a full Commander at a glance — the half-ring is the tell. It's the naval equivalent of learning to read Army chevrons, and it makes identifying and dating genuine mess dress and No1 jackets a lot easier when you're buying — ring pattern and branch colour, where present, are two of the fastest ways to work out exactly what you're holding.