Profile
- Origin
- Singapore
- Built by
- ST Engineering
- Type
- Vehicle-mounted 81 mm and 120 mm advanced mortar system
- Service note
- 2020s-present
- Designer
- ST Engineering Land Systems
- Designed
- Publicly marketed by 2024
- Produced
- 2020s-present
Artillery
Ground Deployed Advanced Mortar System (GDAMS)
Also known as
- GDAMS
- 120 mm GDAMS
- 120mm GDAMS
- Ground Deployed Advanced Mortar System
GDAMS is ST Engineering's lightweight Ground Deployed Advanced Mortar System for wheeled military platforms. Official material describes an 81 mm or 120 mm compatible, vehicle-agnostic mortar with digital fire control, a two- to three-person crew, 15-second deployment and stowage, and compatibility with precision-guided 120 mm mortar bombs.
Profile / Specs
Specifications
- Caliber
- 81 mm and 120 mm smoothbore
- Crew
- 2 to 3
- Deployment and stowage
- 15 seconds / 15 seconds
- Maximum range
- 9 km, ammunition dependent
- Traverse
- +/-90 degrees
- Elevation
- 45 to 80 degrees
- Maximum rate of fire
- 15 rounds per minute for 3 minutes
- Sustained rate of fire
- 4 rounds per minute for 20 minutes
- Fire-control
- Digital mission assignment, automatic laying from target coordinates
Compatible Ammunition
ST Engineering's GDAMS brochure says the system supports 81 mm and 120 mm qualified ammunition, including precision-guided rounds and the Precision Guided 120 mm Mortar Bomb.
| Ammunition | Ammunition type | Firing evidence |
|---|---|---|
 | 120 mm GPS-guided precision mortar bomb | The GDAMS brochure states compatibility with the Precision Guided 120 mm Mortar Bomb, and DefenceWeb reported a TAC-6/GDAMS demonstration of ST Engineering's PM120 GPS-guided round. Sources: GDAMS brochure, Armormax Defence and ST Engineering demo mortar-mounted TAC-6 vehicle |
 | 120 mm high-explosive mortar round | The GDAMS brochure lists 120 mm qualified ammunition compatibility, while Janes identifies Extended Range High Explosive as part of ST Engineering's SRAMS Mk II 120 mm ammunition suite. Sources: GDAMS brochure, IDEX 2018: Singapore's ST Engineering launches SRAMS 120 mm Mk II |
| 120 mm infrared smoke mortar round | The GDAMS brochure lists 120 mm qualified ammunition compatibility, and ST Engineering's mortar-bombs page describes its 120 mm extended-range mortar bombs as compatible with smooth-bore mortar systems. Sources: GDAMS brochure, Mortar Bombs |
Component Scope
Public sources currently describe GDAMS through product data, integration proposals, and demonstrations rather than direct use in a named armed conflict.
| Scope | Source-backed detail | Catalog treatment |
|---|---|---|
| Launcher role | ST Engineering describes GDAMS as a lightweight mortar system for wheeled military platforms with rapid deployment and patented blast-diffuser technology. | The record is an artillery support page rather than a conflict-backed weapon entry. |
| Ammunition compatibility | The official brochure lists 81 mm and 120 mm qualified ammunition, including precision-guided rounds and the Precision Guided 120 mm Mortar Bomb. | The relationship section links existing ammunition pages without copying their histories onto GDAMS. |
| Demonstration evidence | DefenceWeb reported a 2025 TAC-6/GDAMS demonstration in South Africa where conventional rounds and PM120 GPS-guided precision ammunition were demonstrated. | The timeline records the demonstration as system context, not conflict use. |
Sources: Ground Deployed Advanced Mortar System (GDAMS); GDAMS brochure; Ground Deployed Advanced Mortar System - Babcock International Group; Armormax Defence and ST Engineering demo mortar-mounted TAC-6 vehicle.
Timeline
Ground Deployed Advanced Mortar System (GDAMS) Key Events
GDAMS marketed as a lightweight vehicle-mounted mortar
ST Engineering product material described GDAMS as a lightweight, vehicle-agnostic mortar system with 81 mm and 120 mm compatibility, digital fire control, and rapid deployment.
Sources: GDAMS brochure
TAC-6/GDAMS demonstration in South Africa
DefenceWeb reported that Armormax Defence and ST Engineering demonstrated a TAC-6 vehicle fitted with GDAMS at Armscor's Alkantpan range, including PM120 GPS-guided ammunition context.
Sources: Armormax Defence and ST Engineering demo mortar-mounted TAC-6 vehicle
Media
Ground Deployed Advanced Mortar System (GDAMS) Images
Related Weapon Systems
Sources
Ground Deployed Advanced Mortar System (GDAMS)Publisher: ST Engineering | Note: Supports official GDAMS identity, ST Engineering manufacturer background, wheeled-platform integration context, rapid-deployment framing, blast-diffuser feature, and official image provenance. | Accessed: 2026-07-01GDAMS brochurePublisher: ST Engineering | Note: Supports GDAMS specifications, including caliber compatibility, crew, deployment and stowage time, range, traverse, elevation, rate of fire, digital fire-control notes, and precision-guided 120 mm mortar-bomb compatibility. | Accessed: 2026-07-01Ground Deployed Advanced Mortar System - Babcock International GroupPublisher: Babcock International Group | Note: Supports Babcock/ST Engineering collaboration context, 120 mm GDAMS vehicle-agnostic carriage, two-person operation, 15-second deployment and stowage, and standard smoothbore ammunition compatibility. | Accessed: 2026-07-01Armormax Defence and ST Engineering demo mortar-mounted TAC-6 vehiclePublisher: DefenceWeb | Note: Supports TAC-6/GDAMS demonstration context, the 2025 Alkantpan range demonstration, PM120 GPS-guided ammunition carriage and demonstration, and GDAMS tactical-vehicle integration. | Accessed: 2026-07-01IDEX 2018: Singapore's ST Engineering launches SRAMS 120 mm Mk IIPublisher: Janes | Note: Supports SRAMS Mk II ammunition-suite context for linked ST Engineering 120 mm ammunition records. | Accessed: 2026-07-01Mortar BombsPublisher: ST Engineering | Note: Supports ST Engineering 120 mm extended-range mortar-bomb family compatibility with smooth-bore mortar systems. | Accessed: 2026-07-01