BNWAS Safety System – Global Maritime Standard

The Bridge Navigation Watch Alarm System (BNWAS) is a mandatory shipboard safety system that enhances navigational safety by continuously monitoring the watch officer’s presence and alertness on the bridge. It automatically triggers visual and audible alarms if no activity or acknowledgement is detected within preset intervals. BNWAS significantly reduces the risk of maritime accidents caused by officer incapacitation or inattention, ensuring safety, regulatory compliance, and continuous watchkeeping on all major vessels.

BNWAS – Operation & Escalation Sequence

Motion and manual input detection
Timed alert intervals with visual/audio alarms
Stage 1: Alert bridge officer for acknowledgement
Stage 2: Alert backup officer or master
Stage 3: General alarm throughout accommodation

Supports integration with ECDIS and radar
SOLAS-compliant across vessel categories
Can be reset manually or automatically
Improves bridge alertness and safety
Reduces fatigue-related navigational risks

Port Coverage & Service Availability

UAE Ports

Dubai, Fujairah, Sharjah, Jebel Ali, Port Rashid

India Ports

Mumbai, Chennai, Cochin, Vizag, Tuticorin

Oman Ports

Muscat, Sohar, Duqm

Egypt Ports

Port Said, Alexandria, Suez, Damietta

Frequently Asked Questions (FAQs)

The Bridge Navigation Watch Alarm System (BNWAS) is a maritime safety device that monitors the watch officer’s alertness and activates alarms if inactivity is detected.

It requires the officer to periodically confirm alertness through a button press or movement. If unacknowledged, it escalates the alarm to notify backup personnel.

Yes, BNWAS is required under the SOLAS Convention for most vessels, especially cargo ships and passenger vessels above specific tonnage.

Failure to detect input or movement within set time intervals triggers stage-wise alarms escalating from bridge to entire crew.

Yes, depending on configuration, the system allows manual reset or automatic time-based reset upon officer acknowledgment.

All passenger ships and cargo ships over 150 gross tonnage engaged on international voyages must have BNWAS.

Yes, it can be integrated with radar, gyro compass, and ECDIS systems for a comprehensive bridge alert framework.

Certified marine electronics service providers like SEANAV install, calibrate, and maintain BNWAS systems.

Yes, basic training is recommended to ensure watch officers and crew understand how to operate and respond to BNWAS alarms.

Enhanced safety, improved crew vigilance, reduced navigational errors, and SOLAS compliance are key advantages of BNWAS.