The STCW - Rating Forming Part of a Engineering Watch (RFPEW) is the senior most rating in the engine room and the entry level for any merchant marine Engineering Officers License. Each STCW - RFPEW rating must be endorsed separately, unless one qualifies for all ratings. STCW - RFPEW duties include, but are not limited to, inspection of equipment such as pumps, turbines, distilling plants, and condensers; lubrication and maintenance of generators, steering systems, lifeboats, and sewage disposal systems; cleaning and restoration of tools and other equipment.