The Lacrimosa-class heavy cruiser was originally designed to take advantage of recent advancements in slipspace technology, shielding and weapons, and at the time it was first drafted, the Lacrimosa-class was truly ahead of its time. But rapidly, the Lacrimosa's planned advancements fell behind before tooling was even begun. In 2488, the last three active ships of the line, including the UNSC Immortal, received major upgrades to their armament, hull and layout. These refits raised the quality of the three remaining vessels up-to that of any military-grade cruiser of that time period.