Bayraktar TB3 Goes Submarine Hunting: ASELSAN Sonobuoy Test Announced by Cihat Yaycı
Bayraktar TB3 is gaining anti-submarine capabilities. Retired Rear Admiral Cihat Yaycı has announced that the TB3, developed by Baykar and instrumental in giving TCG ANADOLU the title of the world's first UAV carrier, has dropped ‘Sonobuoy’ sensors into the sea for submarine detection.
The Bayraktar TB3, which gave TCG ANADOLU the title of the world's first short-runway UAV carrier, appears to have taken the first step in a critical test related to submarine hunting. Retired Rear Admiral Cihat Yaycı stated that the expendable 'Sonobuoy' device used for submarine detection was deployed from the TB3 UAV into the water.
After being dropped into a specific location in the sea by the aerial vehicle, multiple Sonobuoys are positioned in the depths. Using passive directional frequencies, they can detect the presence of a submarine when it passes through that region.
BOTH TB3 AND AKSUNGUR TO HUNT SUBMARINES
Yaycı emphasized the historical importance of the Sonobuoy test with the TB3 in a broadcast on Haber Global, stating:
“Sonobuoys have been deployed for conducting anti-submarine warfare with UAVs. Sonobuoy means... Sensors are dropped to detect submarines, and these devices pick up signals from submarines. Once a signal is received, this information is transmitted to a surface ship or aircraft.
It works through magnetic anomalies. It detects the submarine and reports the information either to the aircraft or the ship. Bayraktar TB3s launched from TCG ANADOLU will detect submarines from great distances and transmit the information to TCG ANADOLU, other ships, and airborne assets involved in anti-submarine warfare. We are probably the first country to do this with an unmanned aerial vehicle.”
The test, which Yaycı announced based on his sources, has not yet been officially confirmed by Baykar as of April 16, 2025. However, it is known that Baykar has long intended to carry out Sonobuoy tests with the Bayraktar TB3.
A similar mission is expected to be carried out by TUSAŞ's AKSUNGUR UAV. AKSUNGUR is planned to carry both the Sonobuoy and the lightweight torpedo ORKA. However, no information has yet been published about AKSUNGUR conducting Sonobuoy deployment tests.
Meanwhile, the Sonobuoy test by Bayraktar TB3 is considered a world first. Although Sonobuoy deployment from UAVs has been done before, Bayraktar TB3 gains a unique distinction for being the first UAV in its class with short-runway aircraft carrier take-off and landing capability to perform such a test. In other words, no UAV that could operate from a ship similar to TCG ANADOLU had previously conducted a Sonobuoy drop.
U.S.-made UAVs like the MQ-9C Fire Scout, MQ-4C Triton, and MQ-9B SeaGuardian can also deploy Sonobuoy sensors.
ASELSAN-MADE SENSOR: ASELBUOY SPECIFICATIONS
It is considered almost certain that the sensor used in Bayraktar TB3’s anti-submarine tests is the ASELBUOY-100P.
ASELSAN describes its passive directional submarine-hunting sensor as follows:
“ASELBUOY-100P is a passive directional Sonobuoy developed in NATO A-size, deployable from maritime patrol aircraft, UAVs, unmanned surface vessels, or surface ships. When deployed from air or surface platforms, it descends to the sea surface via a stabilizing parachute.
After entering the water, it quickly deploys into components that stay underwater (acoustic sensors and mechanical parts) and those that remain on the surface (control/communication parts).
ASELBUOY-100P can collect omni-directional and directional acoustic information in the 5-2400Hz frequency band on a horizontal plane at two different operational depths. It transmits this information in real-time using one of 96 VHF channels via an antenna housed in the floating buoy to air and surface platforms for passive submarine signal detection.
The Sonobuoy’s operational depth, VHF communication channel, and operational duration can be programmed from its own user interface (EFS) before deployment.
Once the programmed operational time ends, the expendable Sonobuoy self-scuttles. After deployment, RF broadcast on/off, operational duration, and VHF communication channel can be modified via the UHF band through the CFS command interface.”
ASELBUOY WEIGHT, LENGTH, AND OPERATING DEPTH
- Size: A-size
- Length: 915 mm
- Diameter: 120 mm
- Weight: 10 kg
- Power Source: Lithium Alloy Battery
- Programming: EFS, CFS
- Operating Depth: 30m–150m (EFS programmable)
- Operating Life: 0.5, 1, 2, 4, 8 hours (EFS programmable)
- RF Channel: 1–99 (EFS programmable), 96 selectable channels
- VHF Broadcast RF Output: 1 Watt nominal
- RF Command Receiver: UHF-single channel (291.4 MHz)
- RF Transmitter Stability: +/- 25 kHz
- Acoustic Frequency Range: DIFAR (5 Hz–2400 Hz)
- Shelf Life: 5 years