The applicable international minimum standard to be met, additional requirements adopted by individual flag state administrations and provisions imposed by classification societies are introduced. Equipment, appliances and systems subject to specific statutory or class maintenance requirements are identified, also in terms of on board maintenance and service to be provided by shore-based service suppliers. By means of practical case studies the presented material is discussed and the participant’s knowledge is broadened. The scope of maintenance exemplarily illustrated for selected fixed fire-fighting systems completes this module.