The Mas To Gal-class (known in translation from Klingonaase as the Throne Seeker-class, alphanumeric designation T5-class) was a Klingon class VII assault starship in Imperial Defense Force service in the 23rd century, becoming active on reference stardate 2/0310. A second series, the T5B, became active stardate 2/1211. These vessels were produced, about 14 per year, at Fonawl and Mustaka