A Federation starship under Captain Lisa Cusak that left on a long exploration of the Beta Quadrant and was destroyed by an energy barrier around a planet, leaving Cusak as the only survivor.
The USS Olympia is the lost ship of the sixth-season Star Trek: Deep Space Nine episode The Sound of Her Voice. Under Captain Lisa Cusak she left the Federation in the 2360s for a deep-space survey of the Beta Quadrant that lasted eight years.
On the way home the Olympia scanned a planet surrounded by an unusual energy barrier. The scan set off a reaction that wrecked the ship. Cusak reached the surface in an escape pod, apparently the only one of the crew to do so, and began calling for help.
In 2374 the Defiant picks up her signal and races to reach her, with Sisko, Bashir and O'Brien keeping her company by talking to her for days. When they land they find that she has been dead for over three years: the barrier shifted her signal forward through time and theirs back.