Kondor and Kondor-II are very versatile MCM ships that were built in East Germany in late 60's and early 70's.
21 Kondors were built; they were armed with a single 2M3 gun.
Two were built as torpedo retrievers.
The other two were completed as small reconnaissance vessels (basically, spy ships).
In 1994 both were sold to Estonia where they served as patrol boats till 2000.
In 1997 a single ship of Kondor-I class was sold to Cape Verde where she was used for patrol duties and fisheries protection. The armament and the minesweeping gear were removed and minor modifications were done. A helipad was built on the stern although the Cape Verdean Coast Guard didn't have any helicopters at that time.
This Kondor was built with extended superstructure to be used as a training ship in Volksmarine. After 10 years in service in 1981 she was converted into a fisheries protection vessel "Warnemunde".
After German reunification in 1990 the ship was transferred to Kustenwache (German Coast Guard) where she served for another decade.
In 2000 she was sold to Tunisia as a patrol boat "Ras Ifrikia".
This Kondor was launched as a training ship in 1970 and then in 1977 got modified, renamed "Ernst Thälmann" and transferred to the Society of Sport and Technics (Gesellschaft für Sport und Technik).
Kondor-II was slightly longer and armed with two additional 2M3 guns. 30 of them were built.
In 1991 four of these ships were sold to Uruguay where they were re-armed with 40mm guns (some sources say it's a Bofors 40L70) and used as patrol minesweeper. One of them - Valiente - sunk in 2000 after colliding with a Greek vessel "Skyros".
In 1993 two Kondors-II were given to Latvia without armament. The Latvians armed them with 23mm Polish Wróbel on the bow and two Reihnmetal FK-20 aft.
Nine Kondos-II were sold to Indonesia in the early 1990's. They are still in service as minesweepers.
There were other types of ships based on the Kondor project.
Here's a hydrographic vessel Carl Fr. Gauss.
And this is the government yacht Ostseeland: