Cairn-class Tomb Ship

Cairn-class Tombships are the largest Necron vessels that the Imperium has encountered to date. Large and incredibly heavily-armed, Tombships are more than a match for Imperial battleships. Fortunately for the Necrons' enemies, Tombships are also very rare, having only been encountered seven times. Each time, the Tombship was part of a large force that included at least three Scythe-class Harvest Ships.

All the Tombships thus far encountered by the Imperium have all been of the same design, indicating a ship that has been developed to the pinnacle of its design. There is no indication of types of Tombship beyond the Cairn-class save a single rumor of a Space Hulk-dwarfing Necron ship is alledged to have engaged an Ork fleet, though this may or may not be simple Orkish exaggeration.