Sorum-class tugboat
{{Short description|1972 Russian seagoing tug}}
| {{Infobox ship begin |sclass=2}}
{{Infobox ship image |Ship image=МБ-99. Парад ВМФ Владивосток 2008.07.27.JPG |Ship caption=The Russian Navy Sorum-class seagoing tug {{Transliteration|ru|{{nowrap|MB-99}}}} (Project 745) during the Navy Day celebrations at Vladivostok in 2008 }} {{Infobox ship class overview |Name=Sorum class |Builders=* Yaroslavl Shipyard
|Operators=* {{navy|Soviet Union}} (former)
|Class before= |Class after= |Subclasses= |Cost= |Built range= |In service range= |In commission range=1972 |Total ships building= |Total ships planned= |Total ships completed={{circa|43}}{{sfn|Russianships.info}} |Total ships cancelled= |Total ships active= |Total ships laid up= |Total ships lost= |Total ships retired= |Total ships preserved= }} {{Infobox ship characteristics |Hide header= |Header caption=(Project 745) |Ship class= |Ship type=Seagoing tug |Ship displacement={{cvt|1452|t|lk=in}} |Ship length={{cvt|56.5|m|ftin|lk=in}} |Ship beam={{cvt|12.64|m|ftin}} |Ship height= |Ship draught= |Ship draft={{cvt|4.47|m|ftin}} |Ship depth= |Ship hold depth= |Ship decks= |Ship deck clearance= |Ship ramps= |Ship ice class= |Ship power=* 2 × 1,000 kW main diesel gensets
|Ship propulsion={{unbulleted indent list|IEP; two shafts:{{unbulleted indent list|indent=0.4em|2 × {{cvt|1500|PS|shp|adj=on|lk=on |
| 1}} DC propulsion motors{{sfn|Grigoryev|2023|p=120}}}}}}
|Ship sail plan= |Ship speed=Max: {{convert|13.2|kn|lk=in}} |Ship range={{convert|6200|nmi|lk=in|abbr=on}} at {{convert|13|kn|lk=in|abbr=on}} |Ship endurance=40 days |Ship test depth= |Ship boats= |Ship capacity= |Ship troops= |Ship complement=35 |Ship crew= |Ship time to activate= |Ship sensors=* 2 × Don navigational radars |Ship EW= |Ship armament={{unbulleted indent list|One unit since 2015:{{unbulleted indent list|indent=0.4em|2 × twin 12.7 mm {{nowrap|Utyos-M}} machine gun turrets{{efn|name=Korets}}}}}} |Ship armour= |Ship armor= |Ship aircraft= |Ship aircraft facilities= |Ship notes= }} |
The Sorum class, Soviet designation Project 745, is a series of seagoing tugs built for the Soviet Navy and KGB Border Troops, and later operated by the Russian Navy and FSB Border Service.{{sfn|Polmar|1986}}
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, search and rescue, and fisheries protection.
Design
; Project 745 seagoing tug: The oceangoing tugs are auxiliary vessels for the Soviet Navy, later the Russian Navy.{{sfn|Polmar|1986|pp=9, 82, 322}}{{sfn|Russianships.info}}
; Project 745P patrol ship: The border patrol ships are modified versions of the original Project 745. They are armed with two 30 mm {{nowrap|AK-230M}} or {{nowrap|AK-306}}{{efn|The AK-306s were mounted on the last five of nineteen ships built.{{sfn|Russianships.info}}}} gun mounts giving them the ability to fire on surface, air and ground targets, and are equipped with the {{nowrap|Kolonka-1}} fire-control system to control these weapons.{{sfn|Polmar|1986|pp=9, 385}}{{sfn|Russianships.info}}
; Project 07452 experimental vessel: The reconnaissance vessel is a version of the original Project 745, which is a testbed for SIGINT and hydroacoustic equipment.{{sfn|Russianships.info}}
; 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 ({{convert|2720|PS|shp|abbr=out|disp=or|lk=on}}), and a bow thruster.{{sfn|Zelenodolsk Shipyard}}{{sfn|Grigoryev|2023|p=120}}{{sfn|Russianships.info}}
; 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.{{sfn|Grigoryev|2023|p=120}}{{sfn|Russianships.info}}
Externally, the Projects 745MB and 745MBS tugs can be distinguished from the original Project 745 tugs by twin funnels instead of one.
MB-307 oceangoing tug (DN-SC-94-00168).jpg|The Russian Navy Project 745 seagoing tug {{Transliteration|ru|{{nowrap|MB-307}}}} in the North Atlantic Ocean in 1993
Ходові випробування двох малих артилерійських бронекатерів у відритому морі (27834880515).jpg|The Ukrainian Navy Project 745 seagoing tug {{Transliteration|uk|Korets}} and the {{sclass2|Gyurza-M|gunboat|2}} {{Transliteration|uk|Berdiansk}} (U175) in the Black Sea in 2016
ZABAYKALYE border patrol ship (DN-SC-93-06072).jpg|The Russian Border Troops Project 745P border patrol ship {{Transliteration|ru|Zabaykalye}} 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 {{Transliteration|ru|Bug}} and the Yamaha {{nowrap|S-329}}-type border patrol boat {{Transliteration|ru|Steregushchy}} during the Russian-Japanese exercise in Aniva Bay in 2009
OS-572 experimental vessel (DN-SN-89-06987).jpg|The Soviet Navy Project 07452 experimental vessel (de facto reconnaissance vessel) {{Transliteration|ru|{{nowrap|OS-572}}}}
MB-12 oceangoing tug (SF and RGO 2020-08-27).jpg|The Russian Navy Project 745MB seagoing tug {{Transliteration|ru|{{nowrap|MB-12}}}} at Cape Zhelaniya in 2020
Naval review on the last day of Marine Security Belt 2019 (57).jpg|The Russian Navy Project 745MBS rescue tug {{Transliteration|ru|Viktor Konetsky}} and {{ship|IRIS|Shahid Mahdavi|P313-1}} during the CHIRU 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 in the Arctic in 2013.{{cite news|title=Russia 'seizes' Greenpeace ship after Arctic rig protest|work=BBC News|date=23 September 2013|url=https://www.bbc.com/news/world-europe-24170129|accessdate=29 June 2017}}
Another Project 745P border patrol ship rammed a Ukrainian tug in the Kerch Strait on November 25, 2018.{{cite web|title=Navy tugboat Yani Kipi vs Russian coastguard|url=https://liveuamap.com/en/2018/25-november-navy-tugboat-yani-kipi-vs-russian-coast-guard|website=liveuamap|accessdate=25 November 2018}}
See also
Notes
{{notelist}}
References
{{reflist}}
Further reading
- {{cite book |last=Polmar |first=Norman |author-link=Norman Polmar |title=Guide to the Soviet Navy |year=1986 |place=Annapolis, Md. |publisher=Naval Institute Press |pages={{nowrap|8–9}}, 82, 322, 385 |edition=4th |isbn=0-87021-240-0}}
- {{cite magazine |last=Grigoryev |first=Andrey V. |date=June 2023 |script-title=ru:История и современное состояние судовых систем электродвижения |url=https://www.korabel.ru/journal/view/61.html |url-access=registration |format=PDF |magazine=WWW.KORABEL.RU |language=ru |location=Saint Petersburg |number=2 |pages={{nowrap|116–122}} |access-date=10 March 2024}}
External links
{{commons category}}
- {{cite web |title=Seagoing tug - Project 745 |url=https://russianships.info/eng/support/project_745.htm |website=Russianships.info |access-date=10 March 2024 |url-status=live |archive-url=https://web.archive.org/web/20231117202408/https://russianships.info/eng/support/project_745.htm |archive-date=17 November 2023 |ref={{harvid|Russianships.info}}}}
- {{cite web |script-title=ru:Морской буксир проекта 745МБ |url=https://www.zdship.ru/products/shipbuilding/spec-ships/441/ |trans-title=Project 745MB seagoing tug |website=JSC "Zelenodolsk Plant named after A.M. Gorky" |language=ru |access-date=10 March 2024 |url-status=live |archive-url=https://web.archive.org/web/20200718065147/https://www.zdship.ru/products/shipbuilding/spec-ships/441/ |archive-date=18 July 2020 |ref={{harvid|Zelenodolsk Shipyard}}}}
{{DEFAULTSORT:Sorum class seagoing tug}}
Category:Auxiliary ships of the Soviet Navy
Category:Cold War patrol vessels of the Soviet Union