This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.
In 2256, Morska's location was labeled on the star chart "Alpha/Beta Quadrant Overview" in the ready room aboard the USS Discovery. This star was located in the territory of the Klingon Empire. (Star Trek VI: The Undiscovered Country; DIS: "Choose Your Pain", "Magic to Make the Sanest Man Go Mad", "The War Without, The War Within")
The USS Enterprise-A passed near Morska, when on course to Rura Penthe to rescue Kirk and McCoy, in 2293. Fortunately, Communications Officer Uhura was able to convince two Klingon officers stationed on Morska that the Enterprise was a legitimate Klingon ship, sent to ship food and supplies down to the prison. Star Trek VI: The Undiscovered Country;