13 Technical requirements

  13.1.1 In addition to meeting the relevant requirements of resolution A.694(17)^footnote, the INS should comply with the requirements of these performance standards.

  13.1.2 Means should be provided to monitor and to display hardware malfunctions of the INS. Alerts should be provided in case of malfunctions.

  13.2.1 Sensor

  13.2.1.1 A sensor or part thereof is not part of the INS, if it only supplies raw data.

  13.2.1.2 Processing of raw data from sensors may be part of the INS.

  13.2.1.3 In case sources perform functions of the INS these functions and interfaces should conform with the relevant parts of these performance standards.

  13.2.2 Actuator and controller

 An actuator, controller or part thereof is not part of the INS, if it only receives data or commands and does not perform other functions of the INS as required by these standard.

  13.3.1 The operational software should fulfil the requirements of the relevant international standards related to maritime navigation and communication equipment.

  13.4.1 Power supply requirements applying to parts of the INS as a result of other IMO requirements should remain applicable.

  13.4.2 The INS including the sensors for position, speed, heading and depth should be supplied:

• .1 from both the main and the emergency source of electrical power with automated changeover through a local distribution board with provision to preclude inadvertent shutdown; and

• .2 from a transitional source of electrical power for a duration of not less than 45 s.

  13.5.1 After a power interruption full functionality of the INS should be available after recovery of all subsystems. The INS should not increase the recovery time of individual subsystem functions after power restoration.

  13.5.2 If subjected to a power interruption the INS should, upon restoration of power, maintain the configuration in use and continue automated operation, as far as practicable. Automatic control functions should only be restored upon confirmation by the operator.

  13.6.1 Standardized and approved communication protocols for interfaces should be used where possible^footnote.

  13.7.1 The INS should be installed so that it can meet the requirements of the relevant International Standards.

  13.7.2 The INS should be installed taking into account the guidelines in MSC/Circ.982 and relevant guidance on application of SOLAS regulation V/15, adopted by the Organization.