What are the "key shipboard operations" referred to in the last answer?

MCA Oral Exam Questions

(1) All those operations for which mandatory rules and regulations prescribe performance requirements or specific requirements for plans, procedures, instructions, records and checklists; 

(2) those operations connected to the particular ship's type and which may affect safety and pollution prevention, to the extent established by the Company; (3) those operations for which safe practices in ship operations and a safe working environment have been recommended by the IMO, Administrations, classification societies and other industry bodies; and (4) those operations which the Company considers may create hazardous situations if not controlled by plans and instructions. (IACS Recommendation No. 41 - Guidance for Auditors to the ISM Code)