What type of supervision is required for a Special Engineer serving as an apprentice?

The answer is based on the regulations governing the supervision of apprentices in boiler operation. A Special Engineer, when serving as an apprentice, must operate under direct supervision by a licensed engineer. This requirement ensures that the apprentice receives appropriate guidance and instruction while learning the essential aspects of operating and managing a boiler system safely and effectively.

Direct supervision means that a licensed engineer is present and can monitor the apprentice's work closely, providing immediate support and feedback. This level of oversight is critical not only for the safety of the apprentice but also for the overall safety and efficiency of boiler operations. It helps ensure that best practices are followed, and the apprentice is adequately trained in handling various scenarios they may encounter.

In contrast, other options suggest varying degrees of supervision that may not guarantee the same level of oversight necessary for a novice in a potentially hazardous environment. For example, while indirect supervision or supervision by anyone with boiler experience could seem adequate, they lack the regulatory assurance provided by direct oversight from a licensed engineer, potentially compromising safety and quality of instruction.