LKL Kursis (M51) is a minehunter

Minehunter

Minehunters are mine countermeasure vessels that actively detect and destroy individual naval mines. Minesweepers, on the other hand, clear mined areas as a whole, without prior detection of mines...

 of the Lithuanian Naval Force

Lithuanian Naval Force

The Lithuanian Navy is the naval arm of the Lithuanian Armed Forces. Though formally established on 1 August 1935 its roots stretch back as far as naval engagements on the Baltic Sea in the Medieval period...

. Built in West Germany

West Germany

West Germany is the common English, but not official, name for the Federal Republic of Germany or FRG in the period between its creation in May 1949 to German reunification on 3 October 1990....

 in 1958 as Marburg (M1080), a (or Type 320) minesweeper

Minesweeper (ship)

A minesweeper is a small naval warship designed to counter the threat posed by naval mines. Minesweepers generally detect then neutralize mines in advance of other naval operations.-History:...

 for the German Navy

German Navy

The German Navy is the navy of Germany and is part of the unified Bundeswehr .The German Navy traces its roots back to the Imperial Fleet of the revolutionary era of 1848 – 52 and more directly to the Prussian Navy, which later evolved into the Northern German Federal Navy...

, she was upgraded to a Type 331 minehunter in the early 1960s. Germany donated Marburg in 2001 to the Lithuanian Naval Force, which renamed the ship Kursis. The vessel augmented the Squadron of Mine-hunters, which had been established in 1999 with the similar donation of sister ship

Sister ship

A sister ship is a ship of the same class as, or of virtually identical design to, another ship. Such vessels share a near-identical hull and superstructure layout, similar displacement, and roughly comparable features and equipment...

Koblenz, which became .