The British Also Have Ensigns - S3.E8

Binghamton has an ulterior motive, when he temporarily assigns a clumsy, bumbling British Sub-Lieutenant to the 73 Crew. When the Britisher captures Fuji, and places him under arrest as a spy, McHale and Parker work up a rather risky plan to free their Japanese friend, which is complicated by a visit from the Sub-Lieutenant's Admiral-Cousin.