Alan Minyard wrote:

The LM2500 definitely has a reduction gear, and is not (in the USN)
used to power a generator. In most applications two LM2500 are
connected to a common reduction gear.

If by "most" you mean the numerical majority, most LM2500
installations are in power generation. A single engine
direct drives a generator.

Comparatively few of the engines are used for geared marine
propulsion systems.

Rick