The STM 500 is a Turkish modern
coastal submarine
A coastal submarine or littoral submarine is a small, maneuverable submarine with a shallow draft (hull), draft well suited to navigating coastal channels and harbors. Although size is not precisely defined, coastal submarines are larger than mi ...
of the 500-tonne class under construction since 2022. The shallow-water small
diesel-electric attack submarine
An attack submarine or hunter-killer submarine is a submarine specifically designed for the purpose of attacking and sinking other submarines, surface combatants, and merchant vessels. In the Soviet Navy, Soviet and Russian Navy, Russian navies ...
is being built by Turkish defense company
STM with completion of the first vessel not expected until 2026.
[ , the customer for the project had not yet been publicly released.
]
History
The STM-500 was announced in 2021 at the 10th Naval Systems Seminar in August 2021 as a lower cost and more cost effective subsurface warfare option.[
]
Description
The STM-500 will displace more than 500 tonnes, have a crew of 18, and be able to transport a squad of 6 special forces personnel. It is being designed to have an endurance of 30 days and a maximum dive depth of more than 200 meters.Displacement
Displacement may refer to:
Physical sciences
Mathematics and physics
*Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...
: 623 tonnes surfaced, 700 tonnes submerged
* Length: Overall , Beam:
* Diameter:
* Speed: cruise, max
* Endurance on diesel power on batteries
* Propulsion power:
* Power generation: 2x diesel generator
A diesel generator (DG) (also known as a diesel genset) is the combination of a diesel engine with an electric generator (often an alternator) to generate electrical energy. This is a specific case of an engine generator. A diesel compress ...
with Lithium-ion battery
A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li+ ions into electronically conducting solids to store energy. Li-ion batteries are characterized by higher specific energy, energ ...
storage and optional air independent propulsion system
* Crew: 22 + 8 additional space for special forces personnel
Weapons include up to eight "modern heavy-weight torpedo
A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such ...
es or guided missiles
A missile is an airborne ranged weapon capable of self-propelled flight aided usually by a propellant, jet engine or rocket motor.
Historically, 'missile' referred to any projectile that is thrown, shot or propelled towards a target; this u ...
, delivered via four torpedo tube
A torpedo tube is a cylindrical device for launching torpedoes.
There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboa ...
s.[ Torpedoes can be fired simultaneously. The submarine will be able to carry and launch ]underwater drone
Unmanned underwater vehicles (UUV), also known as underwater drones, are submersible vehicles that can operate underwater without a human occupant. These vehicles may be divided into two categories: remotely operated underwater vehicles (ROUVs) an ...
s.[
]
See also
* Reis-class submarine
*MILDEN project
The MILDEN project ( Turkish: ''Milli Denizaltı Projesi''; English: National Submarine Project) is a multi-year military design and procurement project to develop indigenous air-independent power attack submarines, intended to be commissioned ...
References
Submarines of Turkey
Attack submarines
Submarine classes
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