The Sorum class, Soviet designation Project 745, is a series of seagoing tugs built for the

Soviet Navy The Soviet Navy was the naval warfare Military, uniform service branch of the Soviet Armed Forces. Often referred to as the Red Fleet, the Soviet Navy made up a large part of the Soviet Union's strategic planning in the event of a conflict with t ...

and

KGB Border Troops The Soviet Border Troops () were the border guard of the Soviet Union, subordinated to the Soviet state security agency: first to the ''Cheka''/OGPU, then to NKVD/ MGB and, finally, to the KGB. Accordingly, they were known as NKVD Border Secu ...

, and later operated by the

Russian Navy The Russian Navy is the Navy, naval arm of the Russian Armed Forces. It has existed in various forms since 1696. Its present iteration was formed in January 1992 when it succeeded the Navy of the Commonwealth of Independent States (which had i ...

and FSB Border Service. These vessels perform the standard missions of a seagoing tugboat with other missions such as protecting and patrolling Russian maritime borders, enforcing navigational rules and

law enforcement Law enforcement is the activity of some members of the government or other social institutions who act in an organized manner to enforce the law by investigating, deterring, rehabilitating, or punishing people who violate the rules and norms gove ...

search and rescue Search and rescue (SAR) is the search for and provision of aid to people who are in distress or imminent danger. The general field of search and rescue includes many specialty sub-fields, typically determined by the type of terrain the search ...

, and

fisheries protection Maritime patrol or maritime reconnaissance is the task of monitoring areas of water. Generally conducted by military and law enforcement agencies, maritime patrol is usually aimed at identifying human activities. Maritime patrol refers to active ...

Design

; Project 745 seagoing tug: The oceangoing tugs are

auxiliary vessel An auxiliary ship is a naval ship designed to support combatant ships and other naval operations. Auxiliary ships are not primary combatant vessels, though they may have some limited combat capacity, usually for purposes of self-defense. Auxil ...

s for the Soviet Navy, later the Russian Navy. ; Project 745P patrol ship: The

border Borders are generally defined as geography, geographical boundaries, imposed either by features such as oceans and terrain, or by polity, political entities such as governments, sovereign states, federated states, and other administrative divisio ...

patrol ship A patrol boat (also referred to as a patrol craft, patrol ship, or patrol vessel) is a relatively small naval ship, naval vessel generally designed for Coastal defence and fortification, coastal defence, Border control, border security, or law ...

s are modified versions of the original Project 745. They are armed with two 30 mm or gun mounts giving them the ability to fire on surface, air and ground targets, and are equipped with the

fire-control system A fire-control system (FCS) is a number of components working together, usually a gun data computer, a director and radar, which is designed to assist a ranged weapon system to target, track, and hit a target. It performs the same task as a hum ...

to control these weapons. ; Project 07452 experimental vessel: The reconnaissance vessel is a version of the original Project 745, which is a

testbed A testbed (also spelled test bed) is a platform for conducting rigorous, transparent, and replicable testing of scientific theories, computing tools, and new technologies. The term is used across many disciplines to describe experimental research ...

for

SIGINT Signals intelligence (SIGINT) is the act and field of intelligence-gathering by interception of ''signals'', whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly u ...

and hydroacoustic equipment. ; Project 745MB seagoing tug: The oceangoing tug is a modernized version of the original Project 745. It is equipped with two main diesel gensets (2 × 1,500 kW), three auxiliary diesel gensets (2 × 200 kW + 1 × 100 kW), an asynchronous propulsion motor (), and a

bow thruster Manoeuvering thrusters (bow thrusters and stern thrusters) are transversal propulsion devices built into or mounted to either the Bow (watercraft), bow or stern (front or back, respectively) of a ship or boat to make it more manoeuvrable. Bow th ...

. ; Project 745MBS rescue tug: The rescue tug is a SAR version of the modernized Project 745MB, which is equipped with a switched reluctance propulsion motor instead of an asynchronous one. Externally, the Projects 745MB and 745MBS tugs can be distinguished from the original Project 745 tugs by twin

funnels A funnel is a tube or pipe that is wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening. Funnels are usually made of stainless steel, aluminium, glass, or plastic. The material used in its constructi ...

instead of one. MB-307 oceangoing tug (DN-SC-94-00168).jpg, The Russian Navy Project 745 seagoing tug in the

North Atlantic Ocean The Atlantic Ocean is the second largest of the world's five oceanic divisions, with an area of about . It covers approximately 17% of Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for se ...

in 1993 Ходові випробування двох малих артилерійських бронекатерів у відритому морі (27834880515).jpg, The Ukrainian Navy Project 745 seagoing tug and the (U175) in the

Black Sea The Black Sea is a marginal sea, marginal Mediterranean sea (oceanography), mediterranean sea lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bound ...

in 2016 ZABAYKALYE border patrol ship (DN-SC-93-06072).jpg, The Russian Border Troops Project 745P border patrol ship in the western Pacific in 1992 RIAN archive 400846 Large-scale Russian-Japanese exercise in Sakhalin to prevent criminal activity at sea.jpg, The Russian Coast Guard Project 745P border patrol ship and the Yamaha -type border patrol boat during the Russian-Japanese exercise in

Aniva Bay Aniva Bay (Russian: Залив Анива (''Zaliv Aniva''), Japanese: 亜庭湾, Aniwa Bay, or Aniva Gulf) is located at the southern end of Sakhalin Island, Russia, north of the island of Hokkaidō, Japan. The largest city on the bay is Korsako ...

in 2009 OS-572 experimental vessel (DN-SN-89-06987).jpg, The Soviet Navy Project 07452 experimental vessel (de facto reconnaissance vessel) MB-12 oceangoing tug (SF and RGO 2020-08-27).jpg, The Russian Navy Project 745MB seagoing tug at

Cape Zhelaniya Cape Zhelaniya (, ; being Russian for 'wish/desire') is a headland in the Russian Federation. It is an important geographical landmark. The area in the vicinity of the cape is a desolate place, exposed to bitter Arctic winters. The cape along wi ...

in 2020 Naval review on the last day of Marine Security Belt 2019 (57).jpg, The Russian Navy Project 745MBS rescue tug and during the

CHIRU The Tibetan antelope or chiru (''Pantholops hodgsonii'') (, pronounced ; ) is a medium-sized bovid native to the northeastern Tibetan plateau. Most of the population live within the Chinese border, while some scatter across India and Bhutan in ...

exercise in 2019

History

A Project 745P border patrol ship was involved in an incident involving Greenpeace vessel where the Russian ship fired warning shots, and later seized a Greenpeace vessel after they attempted to board an

oil rig An oil rig is any kind of apparatus constructed for oil drilling. Kinds of oil rig include: * Drilling rig A drilling rig is an integrated system that Drilling, drills wells, such as oil or water wells, or holes for piling and other construc ...

in the

Arctic The Arctic (; . ) is the polar regions of Earth, polar region of Earth that surrounds the North Pole, lying within the Arctic Circle. The Arctic region, from the IERS Reference Meridian travelling east, consists of parts of northern Norway ( ...

in 2013. Another Project 745P border patrol ship rammed a Ukrainian tug in the Kerch Strait on November 25, 2018.

Notes

References

External links

* * {{DEFAULTSORT:Sorum class seagoing tug Auxiliary ships of the Soviet Navy Cold War patrol vessels of the Soviet Union Auxiliary ships of the Russian Navy Patrol vessels of Russia

Design

History

See also

Notes

References

Further reading

External links