"Patrol Fleet Knarr did not return from investigating the mysterious energy readings beyond Hellissandur, and the Kingdom of Denmark immediately appealed to their allies, the Prussian Empire, for assistance. The threat of a foreign power operating in their territorial waters, especially one as impenetrable and secretive as the Covenant of Antarctica, was completely unacceptable.
From the fortified stronghold of Holsteinsborg, Prussian commander Karl-Ehrhart Grunner was instructed to send out a strong force of gunships to attack them directly, joining up with another fleet out of Iceland beyond Kap Farval. This Interdiction Fleet would be lead by his own flagship, the Hetzer, commanded by his subordinate Vice-Admiral Weichmann.
Covenant spies were aware of this plan even before Grunner, and unable to respond with their own fleet in time, engaged the services of the mercenary Black Company based at Ammassalik. They had suffered a disastrous defeat earlier in the year at Grunner's hands, and were eager to repay the Prussian Navy in kind. A force lead by the Death Bringer-class Submarine Grave Warden sallied from the Rogue Anchorage and intercepted the Prussians in the Labrador Sea, just before Kap Farval. Their target, the flagship of the hated Grunner..."
- Echoes of Greenland - Interception in the Labrador Sea
Naval Battles of 1872