Proud Helios is a Star Trek: Deep Space Nine novel written by Melissa Scott.
The attacking is going after Cardassian ships as well, causing the powerful Gul Dukat to show up.
Dukat doesn't care that these people are in harm's way and now the rest of Deep Space Nine's forces must rescue their trapped comrades, neutralize the ship and keep war at bay.
"John Ordover approached me, knowing I was a Trek fan as well as an established SF writer in my own right, and asked if I'd be interested in doing a book in the DS9 universe.
This article about 1990s novels and other printed work relating to Star Trek is a stub.