Lieutenant commander (also hyphenated lieutenant-commander and abbreviated Lt Cdr, LtCdr. or LCDR) is a
commissioned officer rank in many
navies. The rank is
superior
Superior may refer to:
*Superior (hierarchy), something which is higher in a hierarchical structure of any kind
Places
*Superior (proposed U.S. state), an unsuccessful proposal for the Upper Peninsula of Michigan to form a separate state
*Lake ...
to a
lieutenant
A lieutenant ( , ; abbreviated Lt., Lt, LT, Lieut and similar) is a commissioned officer rank in the armed forces of many nations.
The meaning of lieutenant differs in different militaries (see comparative military ranks), but it is often ...
and subordinate to a
commander. The corresponding rank in most
armies and
air force
An air force – in the broadest sense – is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an ...
s is
major, and in the
Royal Air Force
The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) an ...
and other
Commonwealth air forces is
squadron leader
Squadron leader (Sqn Ldr in the RAF ; SQNLDR in the RAAF and RNZAF; formerly sometimes S/L in all services) is a commissioned rank in the Royal Air Force and the air forces of many countries which have historical British influence. It is als ...
.
The
NATO rank code is mostly OF-3.
A lieutenant commander is a department officer or the
executive officer (
second-in-command) on many warships and smaller shore installations, or the
commanding officer of a smaller ship/installation. They are also department officers in
naval aviation squadrons.
Etymology
Most Commonwealth and other navies address lieutenant commanders by their full rank or the positions they occupy ("captain" if in command of a vessel). The United States Navy, however, addresses officers by their full rank or the higher grade of the rank. For example, oral communications in formal and informal situations, a lieutenant (junior grade) is abbreviated as "lieutenant," and a lieutenant commander is abbreviated as "commander."
Origins
Lieutenants were commonly put in command of smaller vessels not warranting a commander or
captain. Such a lieutenant was called a "lieutenant commanding" or "lieutenant commandant" in the
United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
, and a "lieutenant in command," "lieutenant and commander," or "senior lieutenant" in the
Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against Fr ...
. The USN settled on "lieutenant commander" in 1862 and made it a distinct rank. The RN followed suit in March 1914.
Canada
In the
Royal Canadian Navy
The Royal Canadian Navy (RCN; french: Marine royale canadienne, ''MRC'') is the naval force of Canada. The RCN is one of three environmental commands within the Canadian Armed Forces. As of 2021, the RCN operates 12 frigates, four attack subma ...
, the rank is the
naval rank equal to
major in the
army
An army (from Old French ''armee'', itself derived from the Latin verb ''armāre'', meaning "to arm", and related to the Latin noun ''arma'', meaning "arms" or "weapons"), ground force or land force is a fighting force that fights primarily on ...
or
air force
An air force – in the broadest sense – is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an ...
and is the first
senior officer rank. Lieutenant commanders are senior to
lieutenants (N) and to army and air force
captains, and are junior to
commanders and
lieutenant colonels.
United Kingdom
Royal Navy
The insignia worn by a
Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against Fr ...
lieutenant commander is two medium
gold braid stripes with one thin gold stripe running in between, placed upon a navy blue/black background. The top stripe has the ubiquitous loop used in all RN officer rank insignia, except for the rank of Midshipman. The RAF follows this pattern with its equivalent rank of
squadron leader
Squadron leader (Sqn Ldr in the RAF ; SQNLDR in the RAAF and RNZAF; formerly sometimes S/L in all services) is a commissioned rank in the Royal Air Force and the air forces of many countries which have historical British influence. It is als ...
.
Having fewer officer ranks than the army, the RN previously split some of its ranks by seniority (time in rank) to provide equivalence: hence a lieutenant with fewer than eight years seniority wore two stripes, and ranked with an army captain; a lieutenant of eight years or more wore two stripes with a thinner one in between, and ranked with a major. This distinction was ostensibly abolished when the rank of lieutenant commander was introduced, although promotion to the latter rank was automatic following accumulation of eight years’ seniority as a lieutenant. Automatic promotion was stopped at the start of the 21st Century and promotion is now only awarded on merit.
Royal Observer Corps
Throughout much of its existence, the British
Royal Observer Corps (ROC) maintained a rank of observer lieutenant commander. The ROC wore a
Royal Air Force
The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) an ...
uniform and their rank insignia appeared similar to that of an RAF
squadron leader
Squadron leader (Sqn Ldr in the RAF ; SQNLDR in the RAAF and RNZAF; formerly sometimes S/L in all services) is a commissioned rank in the Royal Air Force and the air forces of many countries which have historical British influence. It is als ...
except that the stripes were shown entirely in black. Prior to the renaming, the rank had been known as ''observer lieutenant (first class)''.
United States
In the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
, the rank of lieutenant commander exists in the
United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
,
United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, m ...
,
United States Public Health Service Commissioned Corps, and
National Oceanic and Atmospheric Administration Commissioned Officer Corps.
Within the U.S. Navy, lieutenant commanders are listed as
junior officers
Junior officer, company officer or company grade officer refers to the lowest operational commissioned officer category of ranks in a military or paramilitary organization, ranking above non-commissioned officers and below senior officers.
The ...
. There are two insignia used by U.S. Navy and U.S. Coast Guard lieutenant commanders. On service khakis and all working uniforms, lieutenant commanders wear a gold oak leaf collar device, similar to the ones worn by
majors in the
United States Air Force
The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Si ...
and
United States Army
The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, ...
, and identical to that worn by majors in the
United States Marine Corps
The United States Marine Corps (USMC), also referred to as the United States Marines, is the maritime land force service branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations through c ...
. In all dress uniforms, they wear sleeve braid or shoulder boards bearing a single gold quarter-inch stripe between two gold half-inch strips (nominal size). Above or inboard of the stripes, they wear their speciality insignia (i.e., a star for officers of the line, single oak leaf for medical with silver acorn for Medical Corps, crossed oak leaves for
Civil Engineer Corps, United States shield for the Coast Guard, etc.) The
Uniformed Services of the United States designate the rank as O-4.
Gallery
File:Generic-Navy-5.svg, Lieutenant commander
( Antigua and Barbuda Coast Guard)
(Royal Australian Navy
The Royal Australian Navy (RAN) is the principal naval force of the Australian Defence Force (ADF). The professional head of the RAN is Chief of Navy (CN) Vice Admiral Mark Hammond AM, RAN. CN is also jointly responsible to the Minister o ...
)
( Royal Bahamas Defence Force)
(Bangladesh Navy
The Bangladesh Navy ( bn, বাংলাদেশ নৌবাহিনী, Bangladesh Nou Bahini) is the naval warfare branch of the Bangladesh Armed Forces, responsible for Bangladesh's of maritime territorial area, and the defence of impor ...
)
(Barbados Coast Guard
The Barbados Coast Guard is the maritime element of the Barbados Defence Force. Its responsibilities include territorial defence, patrolling Barbados' territorial waters and Exclusive Economic Zone (EEZ), as well as conducting maritime law enforc ...
)
File:Belize Coast Guard OF-3.svg, Lieutenant commander
( Belize Coast Guard)
File:Generic-Navy-5.svg,
( Royal Brunei Navy)
)
(Royal Canadian Navy
The Royal Canadian Navy (RCN; french: Marine royale canadienne, ''MRC'') is the naval force of Canada. The RCN is one of three environmental commands within the Canadian Armed Forces. As of 2021, the RCN operates 12 frigates, four attack subma ...
)
( Royal Danish Navy)
File:Generic-Navy-5.svg,
( Ethiopian Navy)
File:Generic-Navy-5.svg, Lieutenant commander
( Republic of Fiji Navy)
File:Generic-Navy-5.svg, Lieutenant commander
( Gambian Navy)
File:Generic-Navy-5.svg, Lieutenant commander
( Ghana Navy)
File:Generic-Navy-5.svg, Lieutenant commander
( Guyanan Coast Guard)
File:Generic-Navy-5.svg, Lieutenant commander
(Indian Navy
The Indian Navy is the maritime branch of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Navy. The Chief of Naval Staff, a four-star admiral, commands the navy. As a blue-water navy, it operates si ...
)
)
( Irish Naval Service)
(Jamaican Coast Guard
The Jamaica Defence Force (JDF) is the combined military of Jamaica, consisting of an infantry Regiment and Reserve Corps, an Air Wing, a Coast Guard fleet and a supporting Engineering Unit. The JDF is based upon the British military model, with ...
)
( Latvian Naval Forces)
( Liberian National Coast Guard)
( Lithuanian Naval Force)
( Royal Malaysian Navy)
( Namibian Navy)
( Royal New Zealand Navy)
( Nigerian Navy)
( Pakistan Navy)
( Papua New Guinea Maritime Element)
File:Generic-Navy-11.svg,
( Polish Navy)
( Romanian Naval Forces)
(Saint Kitts and Nevis Coast Guard
The Saint Kitts and Nevis Defence Force is the military of Saint Kitts and Nevis. It currently consists of an infantry unit (the St. Kitts Nevis Regiment) and a maritime unit (the St. Kitts Nevis Coast Guard). Both units having regular and reserv ...
)
File:Generic-Navy-5.svg, Lieutenant commander
(Sierra Leone Navy
The Republic of Sierra Leone Armed Forces (RSLAF) are the armed forces of Sierra Leone, responsible for the territorial security of Sierra Leone's borders and defending the national interests of Sierra Leone, within the framework of the 1991 Si ...
)
File:Generic-Navy-5.svg, Lieutenant commander
( South African Navy)
( Sri Lanka Navy)
( Tanzania Naval Command)
File:Generic-Navy-5.svg, Lieutenant commander
( Tongan Maritime Force)
(Trinidad and Tobago Coast Guard
The Trinidad and Tobago Defence Force (TTDF) is the military organization responsible for the defence of the twin island Republic of Trinidad and Tobago. It consists of the Trinidad and Tobago Regiment, the Trinidad and Tobago Coast Guard, the Tr ...
)
(Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against Fr ...
)
(United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
)
(United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, m ...
)
( Vanuatu Maritime Wing)
References
{{US officer ranks, collapse=collapsed
Naval ranks
Military ranks of Australia
Military ranks of Denmark