Which of the following is NOT a main role of a Ship's Serviceman?

The role of a Ship's Serviceman primarily revolves around managing shipboard morale, overseeing retail sales, and providing customer service to crew members. These functions are essential for maintaining a positive environment and meeting the daily needs of the ship's crew.

Administering medical services is not a primary responsibility of a Ship's Serviceman. This duty typically falls under the purview of medical personnel, such as corpsmen or hospital corpsmen, who are specifically trained to manage health-related issues. The emphasis of the Ship's Serviceman's role lies more in aspects that contribute directly to crew wellbeing through morale-boosting services and managing amenities rather than providing medical care. Thus, understanding the distinct functions within the ship's organization helps clarify the responsibilities of various service members.