Project 90600 Krab
It turns out that the tug of the Black Sea Fleet of the RB-45, built by JSC "Leningrad shipyard" Pella "in 2011, yet in 2013 received the container with additional equipment and was transferred to the General Directorate of deep-sea research (GUGI) of the Ministry of Defense of the Russian Federation, while the tug's new name was "Crab".
The harbor tug operating in the Black Sea named "Krab". Flying the Russian Navy flag, is based in Temryuk (Sea of Azov), but regularly visits Novorossiysk. It was built at Pella Shipyard in 2011 and transferred via the inland waterway system to Temryuk, where it arrived in October of that year. Originally called "RB-45" ("RB" stands "harbor tug" in Russian), it was renamed "Krab" in 2012 or 2013.
Since arriving in the Black Sea, the harbor tug performed mission profiles that go beyond what would be expected of a harbor tug to perform. In fact, in late July 2013, during the keel-laying ceremony for the Project 16609-class harbor tug "Belukha", Vice Admiral Burilichev (head of the Ministry of Defense's uber-secret Directorate for Deep-Sea Research (Russian abbreviation: GUGI)) stated that "Krab" and two other harbor tugs built by Pella were performing tasks not typical for their class.
The vice admiral states: "The ships that were delivered in 2011 and 2012... I am happy to report that they are being used a lot. Moreover, we are using them not exactly as intended - not as harbor tugs for operations with ocean- and sea-going vessels. We are using them as integrated platforms for testing radio-technical equipment. And, the tug "Krab" is currently participating in events related to providing security for the 2014 Olympic Games. The [Project 16609] tugs "Kasatka" and "Delfin" participate in training events related to rescuing and assisting submarines in distress. They also are assigned other serious tasks that go far beyond those of harbor tugs."
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