Lieutenant Commander (also hyphenated lieutenant-commander and abbreviated Lt Cdr,[1]LtCdr.,[2]LCDR,[3][4] or LCdr[5]) is a commissioned officer rank in many navies. The rank is superior to a lieutenant and subordinate to a commander. The corresponding rank in most armies and air forces is major, and in the Royal Air Force and other Commonwealth air forces is squadron leader. It is roughly equivalent to the Corvette Captain rank in central European countries and the Captain 3rd rank rank in eastern European/CIS countries.
The NATO rank code is mostly OF-3.[6]
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.[7] They are also department officers in naval aviation squadrons.
^"Triservice Officers Pay and Grade" (PDF). UK Government. Archived (PDF) from the original on 4 March 2016. Retrieved 25 April 2013.
^"A Dane giving the orders". Admiral Danish Fleet. Archived from the original on 22 October 2013. Retrieved 25 April 2013.
^"US Navy Ranks". United States Navy. Archived from the original on 2 May 2013. Retrieved 2013-04-25.
^"Uniform Ranks". Royal Australian Navy. Archived from the original on 24 January 2015. Retrieved 25 April 2013.
^"Royal Canadian Navy ranks and badges". Department of National Defence (Canada). 2023-08-30. Archived from the original on 2023-04-27. Retrieved 2023-11-03.
^"NATO Standard Agreement (STANAG) 2116: NATO Codes for Grades of Military Personnel". NATO standardization agreement (5 ed.). NATO Standardization Agency (published 25 February 2010). 13 March 1996. Archived from the original on 1 September 2011. Retrieved 13 July 2017.
^"United States Navy - O-4 Lieutenant Commander". FederalPay.org. Archived from the original on 8 May 2018. Retrieved 22 May 2017.
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