ANNEX 3
DRAFT RECOMMENDATION ON PERFORMANCE STANDARDS FOR AN INTEGRATED NAVIGATION SYSTEM (INS)
1 Scope
1.1 The purpose of an integrated navigation system (INS) is to provide 'added value' to the functions and information needed by the officer in charge of the navigational watch (OOW) to plan, monitor or control the progress of the ship.
1.2 The INS supports mode and situation awareness.
1.3 The INS supports safety of navigation by evaluating inputs from several independent and different sensors, combining them to provide information giving timely warnings of potential dangers and degradation of integrity of this information* Integrity monitoring is an intrinsic function of the INS.
1.4 The INS aims to ensure that, by taking human factors into consideration, the workload is kept within the capacity of the OOW in order to enhance safe and expeditious navigation, and to complement the mariner's capabilities, while at the same time to compensate for their limitations.
1.5 The function of passage execution in an Integrated Bridge System (IBS), as defined by the Organization･, may be performed by an INS.
2 Application
2.1 This performance standard is applicable to any combination of navigational aids that provides functions beyond the general intent defined in the respective performance standards adopted by the Organization for individual equipment.
2.2 The purpose of this performance standard is to support the proper and safe integration of navigational equipment and information.
2.3 This performance standard defines three categories of INS：
2.3.1 INS(A) for systems that provide the minimum functional requirements of the INS including a consistent common reference system;
2.3.2 INS(B) for systems that, in addition to the functional requirements of INS(A), provide the information needed for decision support in avoiding hazards;
2.3.3 INS(C) for systems that, in addition to the functional requirements of INS(B), provide the automatic control functions of heading, track or speed.
* IMO resolution MSC.64(67) Annex 1- Integrated Bridge Systems
