Archive · 14 Aug 2025
Pakistan's New Submarines Face Engine Troubles, Similar to Thailand
Pakistan is building new submarines called Hangor-class, similar to ones Thailand is building.
They were supposed to get engines from Germany, but Germany wouldn't sell them.
Instead, they're using Chinese engines.
This is a problem because the Chinese engines aren't proven and caused delays for Thailand's submarines.
This means the new Pakistani submarines might take longer to build and might not work as well, which could put them at risk in the ocean.
Pakistan's Hangor-class submarines face engine issues similar to Thailand's delayed S26T submarines.
Both projects were initially planned to use German MTU engines, but were denied export due to arms control.
The replacement Chinese CHD-620 engine is unproven and has caused delays and performance concerns.
Thailand's S26T project experienced significant delays, pushing back delivery dates and raising risks.
Any reduction in the submarine's endurance or stealth could reduce its survivability.
- Who
- Pakistan's Navy is affected, along with Thailand's Navy.
- What
- Pakistan's Hangor-class submarines are facing engine issues.
- When
- The issue arose during the construction of the submarines.
- Where
- The submarines are being built in China and Pakistan.
- Why
- Because of a change in engine suppliers which led to delays and performance issues.
Pakistan's Perspective
Analyst Perspective
Official Outlook
Pakistan's Perspective
Publicly optimistic about the Hangor's capabilities.
Analyst Perspective
Concerned about the impact of engine issues.
- Submarine Class
- Hangor-class
- Original Engine
- MTU 396
- Replacement Engine
- CHD-620
- Number of Boats
- Eight
- Primary Builder
- China
- Secondary Builder
- Karachi Shipyard