Putative – commonly regarded as such; reputed

“[T]he Red October‘s crewmen met with American sailors, some of whom were Russian-speaking officers disguised as enlisted men, others of whom were Russian language specialists in the enlisted rates flown out jus as the last load of Soviets had arrived aboard. The fact that they were aboard a putatively hostile vessel and had found friendly Russian-speaking men had been overpowering for many of the young conscripts.”

The Hunt for Red October, Tom Clancy