The ''Yan Nyein Aung''-class submarine chaser (Project PGG 063), also known as 63m stealth submarine chaser, is the first indigenous

stealth Stealth may refer to: Military *Stealth technology, technology used to conceal ships, aircraft, and missiles **Stealth aircraft, aircraft which use stealth technology ** Stealth ground vehicle, ground vehicles which use stealth technology ** Ste ...

submarine chaser A submarine chaser or subchaser is a type of small naval vessel that is specifically intended for anti-submarine warfare. They encompass designs that are now largely obsolete, but which played an important role in the wars of the first half of th ...

class of the

Myanmar Navy The Myanmar Navy (; ) is the naval warfare branch of the Tatmadaw, the armed forces of Myanmar. With 19,000 active personnel, the navy operates more than 227 vessels. Prior to 1988, the navy was small, and its role in counterinsurgency, counte ...

. The lead ship of the class is UMS ''Yan Nyein Aung'' (443) and she was commissioned with UMS ''Yan Ye Aung'' (446) on 24 December 2020. This class is intended to replace the ten old Hainan-class submarine chasers.

History

Project PGG 063 was approved at the 31st council meeting of

. The construction of the

lead ship The lead ship, name ship, or class leader is the first of a series or class of ships that are all constructed according to the same general design. The term is applicable to naval ships and large civilian vessels. Large ships are very comple ...

, UMS ''Yan Nyein Aung'' started in March 2016 and she was launched in March 2019. UMS ''Yan Nyein Aung'' (443) was commissioned with UMS ''Yan Ye Aung'' (446) on 24 December 2020. During the inauguration ceremony, the event was attended by Commander-in-Chief of the Myanmar Armed Forces Senior General Min Aung Hlaing, Russian Ambassador to Myanmar H.E.Dr. Nikolay A. LISTOPADOV; Indian Ambassador to Myanmar H.E. Mr. Saurabh Kumar; Senior military officers from the Office of the Commander-in-Chief; Indian Navy Eastern Naval Command Headquarters and Head of Head Admiral Atul Kumar Jain; Commander, Yangon Division Military Headquarters.

Design

The hulls of the ships are constructed of steel and their

superstructure A superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships. Aboard ships and large boats On water craft, the superstruct ...

s of aluminium to reduce the ship's displacement. The uniqueness of this class is that the ships are equipped with three waterjet propulsers to secretly track and attack

submarine A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) The term "submarine" is also sometimes used historically or infor ...

s and to improve maneuverability by reducing noise produced from the engines and propellers. The basic purpose of this class is to quietly track and destroy submarines in the country's

exclusive economic zone An exclusive economic zone (EEZ), as prescribed by the 1982 United Nations Convention on the Law of the Sea, is an area of the sea in which a sovereign state has exclusive rights regarding the exploration and use of marine natural resource, reso ...

. They can also carry out various constabulary tasks within country's

maritime boundary A maritime boundary is a conceptual division of Earth's water surface areas using physiographical or geopolitical criteria. As such, it usually bounds areas of exclusive national rights over mineral and biological resources,VLIZ Maritime Boun ...

against maritime terrorism, environmental

pollution Pollution is the introduction of contaminants into the natural environment that cause harm. Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the component ...

smuggling Smuggling is the illegal transportation of objects, substances, information or people, such as out of a house or buildings, into a prison, or across an international border, in violation of applicable laws or other regulations. More broadly, soc ...

and can also be deployed for

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 ...

operations and transportation of aids when necessary.

Armament

The ships of this class are equipped with one Type-66 57 mm semi-automatic twin gun, two 2M-3M 25 mm twin guns and two locally made QJG-02G 14.5 mm guns for

anti-aircraft warfare Anti-aircraft warfare (AAW) is the counter to aerial warfare and includes "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It encompasses surface-based, subsurface (Submarine#Armament, submarine-lau ...

. Armament for air defense role may seem weak, but this category does not need much because this class focuses only on the anti-submarine role. The ships are also equipped with two triple torpedo launchers for Shyena torpedoes, two

RBU-1200 The RBU-1200 (Russian language, Russian: Реактивно-Бомбовая Установка, Reaktivno-Bombovaja Ustanovka; reaction engine-bomb installation & Смерч; waterspout) is a anti-submarine rocket launcher. The weapon system is r ...

ASW rocket launchers and two LDC (large depth charge) throwers and

naval mine A naval mine is a self-contained explosive weapon placed in water to damage or destroy surface ships or submarines. Similar to anti-personnel mine, anti-personnel and other land mines, and unlike purpose launched naval depth charges, they are ...

s as the

anti-submarine weapon An anti-submarine weapon (ASW) is any one of a number of devices that are intended to act against a submarine and its crew, to destroy (sink) the vessel or reduce its capability as a weapon of war. In its simplest sense, an anti-submarine weapon ...

s (ASW).

Ships of the class

References

{{commons category, Yan Nyein Aung-class submarine chaser Ships of the Myanmar Navy Ship classes built by Myanmar Navy