The Engineering Operational Sequencing System (EOSS) sets policies and procedures for the safe operation of a ship’s engineering plant, boat drills, rescue, etc.
- Emergency Bills. Provide and organize prescribed procedures and assign responsibilities for controlling the effects of a major emergency or disaster suffered by the ship, such as man overboard, assist another ship when dead in the water, crash on the flight deck, or collision at sea.
- Special Bills. Assign responsibility for and promulgate procedures for defense against sneak/swimmer attack, evacuating civilians, prisoners of war, troop lifts, etc.
- Shipboard Procedures. Provide for standard routines for in port and at sea evolutions, such as UNREP, VERTREP, etc.
- Ship's Regulations. Created to supplement and amplify those regulations contained in the SORM. The Chief of Naval Operations (CNO) sets the guidelines.