Trump orders the Pentagon to remove modern electromagnetic catapults from a new US aircraft carrier and revert to steam catapults, a major shift in naval aviation technology. The decision, reported in live coverage, follows years of criticism from the president about the Electromagnetic Aircraft Launch System (EMALS). This move could delay carrier deployments and raise costs, but aligns with Trump's preference for proven steam technology.
Why Trump Favors Steam Catapults Over EMALS
Trump has long argued that steam catapults are more reliable and cost-effective than the newer electromagnetic systems. He previously called EMALS "not good" and "too complex." The Pentagon now faces the challenge of retrofitting the new carrier, likely the USS John F. Kennedy, with legacy steam launch equipment.
Steam catapults have been the standard for decades, using pressurized steam to launch aircraft. EMALS uses linear induction motors, offering smoother acceleration and less stress on airframes. However, Trump's directive prioritizes simplicity and proven performance over advanced technology.
Impact on Carrier Construction and Defense Budget
Reverting to steam catapults on a new carrier will require significant engineering changes. The ship's design must accommodate steam generation and distribution systems, which were omitted in EMALS-equipped vessels. This could add billions to the budget and extend construction timelines by years.
Defense analysts note that the switch may also affect the carrier's ability to launch heavier aircraft, such as F-35C fighters, which benefit from EMALS' precise power control. Yet, Trump's order is clear, and the Pentagon will comply, though experts question the strategic rationale.

Comparison: Steam vs. Electromagnetic Catapults
| Feature | Steam Catapult | EMALS |
|---|---|---|
| Technology | Pressurized steam | Linear induction motor |
| Reliability | Proven, but high maintenance | Newer, with initial teething issues |
| Aircraft stress | Higher stress on airframes | Smoother acceleration, less stress |
| Cost | Lower initial, higher operational | Higher initial, lower operational |
| Launch capability | Limited to lighter aircraft | Can launch heavier aircraft |
Key Takeaways from the Pentagon Directive
- Trump orders removal of EMALS from a new carrier in favor of steam catapults.
- Retrofit will likely delay carrier delivery and increase costs.
- Steam technology is proven but may limit future aircraft compatibility.
- Pentagon must redesign ship systems to accommodate steam generation.
Reactions and Strategic Implications
Military officials have expressed mixed reactions. Some support Trump's push for reliability, while others warn of lost technological edge. The decision also comes amid broader defense budget debates, with critics arguing that funds could be better spent on modernizing other capabilities.
Australia's prime minister, Anthony Albanese, also spoke with Trump about tariff exemptions, but the carrier decision remains a focal point. The USS Abraham Lincoln's mental health crisis, which was "completely misrepresented" per Hegseth, adds another layer of scrutiny to naval operations.
FAQ
FAQ
What is EMALS?
EMALS stands for Electromagnetic Aircraft Launch System, a modern catapult technology using linear motors to launch aircraft from carriers.
Why does Trump prefer steam catapults?
Trump believes steam catapults are more reliable, simpler, and cost-effective compared to EMALS, which he has criticized as too complex.

What are the consequences of reverting to steam?
Reverting to steam may delay carrier construction, increase costs, and limit the ability to launch heavier aircraft like the F-35C effectively.
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