UNSC Ready or Not
From Halopedia, the Halo wiki
The UNSC Ready or Not' was a Frigate. It as patrolling the 18 Scorpii System for Covenant activity when it picked up unusual slipspace readouts.[1]
The 6mile long "covenant battle fleet" turned out to be the remains of "the Rubble, a hollowed-out Asteroid with a Slipspace drive.[2]
Sources
- ^ Halo: The Cole Protocol page 343
- ^ Halo: The Cole Protocol page 344