USS Valdemar (NCC-26198)

The USS Valdemar (NCC-26198) was an Ambassador-class starship in service during the late-24th century.

In 2370, upon the Cardassian arrest of Deep Space 9 Chief of Operations Miles O'Brien, the Valdemar patrolled the border of the Cardassian Demilitarized Zone. (DS9: "Tribunal")