Speaking at the ceremony, the Russian president stated that the pipeline had shown the effectiveness of work with Turkey on the extremely complicated projects.
"We are here to witness a very important event that clearly shows how our countries can effectively work together as partners on implementing the most complicated and ambitious projects," Putin said.
READ MORE: TurkStream Gas Pipeline to Contribute to EU Energy Security — Erdogan's Office
Putin further noted that projects like TurkStream are not directed against anyone and added that the pipeline project was fully in line with Turkey's national interests.
"The projects of this kind, and this project, in particular, are not directed against anyone's interests. The projects of this kind have a purely constructive character. They are aiming to develop the relationship between the states, create sustainable conditions for economy development, for the growth of our countries' citizens' well-being based on this," Putin said.
Putin thanked Erdogan for the political will and courage in the TurkStream implementation, saying that such projects were impossible without that.
The Russian president said he was expecting the onshore stretch of the pipeline to be built just as fast as the offshore one.
"We are expecting the work to be done just as fast so as to launch the pipeline as planned before the end of 2019," Putin said.
The TurkStream pipeline project envisages the construction of a gas pipeline comprising two strings, each with the capacity to deliver 15.7 billion cubic meters (554 billion cubic feet) of gas per year.
The first leg is set to bring Russian gas across the Black Sea directly to Turkey, while the other one will run across the Turkish territory to its western border, transporting natural gas to countries in the south and southeast of Europe.
