FOM-3.19	Fleet Operations Manual Navigation LRIT and BNWAS	Doc No.: FOM-3.19 Revision: 01 Date: 15 Oct 2024 Issued by: DPA Approved by: MD

1. Long Range Identification and Tracking System (LRIT)

• The LRIT System components consist of the following:
  • The shipborne LRIT information transmitting equipment;
  • The Communication Service Provider(s);
  • The Application Service Provider(s);
  • The LRIT Data Centre(s), including any related Vessel Monitoring System(s);
  • The LRIT Data Distribution Plan; and
  • The International LRIT Data Exchange.
• Inmarsat C, which includes mini-C, will be the primary system used for LRIT as it is a reliable, proven system and the majority of ships required to comply with the regulation are already fitted with LRIT compatible Inmarsat C GMDSS or mini-C equipment.
• The terminal must be capable of being configured to transmit the following minimum information set in an Automatic Position Report (APR):
  • The identity of the ship,
  • The position of the ship, and
  • The date and time of the position.
• In addition, the terminal must be able to respond to polling for an on-demand position report and instructions to modify the APR interval to a frequency of a maximum of one every 15 minutes.
• APRs will be transmitted at a minimum 4 times per day to a National Data Centre (NDC), a Cooperative Data Centre (CDC), or a Regional Data Centre (RDC) nominated by the flag.

2. Bridge Navigation Watch Alarm System (BNWAS)

Purpose

To monitor bridge activity and detect operator disability which could lead to marine accidents. Monitor the watch officer’s presence through watch safety system functions.

2.1 Basic Operation

A watch officer is required to press the button on a Timer Reset Panel or to operate navigation equipment (e.g., ECDIS, Radar, etc.) at certain intervals.

When the officer fails to press the button within pre-set intervals, visual and audible alarms will be generated in the wheelhouse.

If the officer doesn’t respond to the alarm, the system transfers the alarm to the Cabin Panels installed in other sections of the vessel in order to inform backup officers of the watch officer’s incapacity.

2.2 Operational Modes

The BNWAS available on-board may have the following operational modes:

• Automatic: Automatically brought into operation whenever the ship’s heading or track control system is activated and inhibited when this system is not activated.
• Manual ON: In this mode, the System will be activated continuously irrespective of the Auto Pilot or Track control activated or not activated. In this Mode, Master will require to put into operation BNWAS when ship is at sea and on Auto Pilot by using the key or password as provided. Similarly, Master will be required to use the key or password as provided for inhibiting when vessel is Manoeuvring and is on manual steering.
• Manual OFF: This will inhibit the System completely and there will not be any monitoring or Alarm.

2.3 Alarm Criterion

Once the System is made active or has been reset, it remains dormant for a period of 3 - 12 minutes time delay. At the end of this dormant period, Alarms are initiated in the following sequence:

• It initiates a visual indication on the bridge.
• If not reset, the BNWAS will additionally sound a first stage audible alarm on the bridge 15 seconds after the visual indication is initiated.
• If not reset, the BNWAS will additionally sound a second stage remote audible alarm in the back-up officer’s and/or Master’s location 15 seconds after the first stage audible alarm is initiated.

2.4 Third Stage Alarm

If not reset, the BNWAS will additionally sound a third stage remote audible alarm at the locations of further crew members capable of taking corrective actions 90 seconds after the second stage remote audible alarm is initiated.

2.5 Resetting Alarm

The timer reset may be facilitated by one of the following means:

• Pressing the reset button on the Main Panel/Timer Reset Panel.
• Provoking the motion sensor.
• Initiate operation of various navigation equipment.

The Reset button function is only available on the Bridge and in the following locations:

• Inside Bridge
• Bridge Wings
• If fitted on board by Track Ball movement of Radars / ECDIS / ARPA