Final answer:
The division of boiler inspection can suspend or revoke the license of a Master pilot or engineer if they are under the influence of drugs or alcohol on duty.
Step-by-step explanation:
The division of boiler inspection has the authority to suspend or revoke the license of any Master pilot or engineer if they are found to be under the influence of drugs or alcohol while on duty. This is done to ensure the safety of everyone involved and prevent accidents or mishaps.
Therefore, the statement is true that the division of boiler inspection may suspend or revoke the license of any Master pilot or engineer found under the influence of drugs or alcohol when on duty.