#BNWAS
Clem Burke bnwas my first celebrity sighting in NYC, on a trip during high school in the 1980s.
April 7, 2025 at 2:48 PM
Whilst there may be another explanation it is hard to see any other reason than Watchkeeper incompetence/fatigue in this issue. The only other plausible scenario I can think of is the Watchkeeper collapsed and not enough time elapsed between that and the BNWAS activating before the collision.
March 11, 2025 at 9:31 PM
Indeed. I'm not going to comment too much because I'm in the UK and theoretically contempt of court applies, but yes, BNWAS being off is certainly suggestive.
January 15, 2026 at 11:36 AM
Top marks, BNWAS motion sensors continually reset by balloons motion to save the watchkeeper from having to move past the sensor ca. every 12 minutes. Less irritating for the watch keeper but what happens if he has a heart attack or stroke, or even just gets absorbed in something else ?
March 11, 2025 at 10:42 PM
Amateurs.

Just need some ornament hanging in front of movement sensor or a ball-bearing ball on radar/ecdis trackpad (or equivalent) to defeat the dreaded #BNWAS
January 15, 2026 at 11:47 AM
BNWAS can be circumvented if not correctly set up (master key left available or password widely known)
I was once asked by a pilot if there was some special maritime event being celebrated because so many of the ships he visited had bunches of party balloons on the bridge.
Can u figure it out ?
March 11, 2025 at 10:28 PM
Many ships have a BNWAS (button you have to press regularly to show you’re awake) on the bridge. I think trains have something similar too. Actually kind of surprising that airliners don’t, because this is a known problem.
September 3, 2025 at 11:26 AM
2/x It also lists several shortcomings, such as a non-functioning bridge watch alarm. The Bridge Navigational Watch Alarm System (BNWAS) was disabled both before and during the grounding and must be repaired before the ship can sail.
May 29, 2025 at 9:09 PM
I was fortunate in my career never to be in that position but it was always a worry when caught short during the daylight watches. I'd need to check the Regs now, but I recall our BNWAS was set to pre alarm after about 20mins so lots of time for things to go wrong.
March 11, 2025 at 9:59 PM
BNWAS kan ook door kapitein afgezet worden....
May 24, 2025 at 6:49 PM
Nobody keeping a proper watch and BNWAS switched off.
If it is switched off the OOW can be anywhere, not even on board! Look up Selandia Swan.
March 11, 2025 at 10:16 PM
Is toegestaan (OMBO) ONE Man Bridge Operation. Onder voorwaarden. Er moet een BNWAS Bridge Navigational Watch and Alarm system aanwezig zijn, een soort dodemansknop. Via sensoren of een echte knop, moet de officier om de 3 tot 12minuten zijn aanwezigheid melden.
May 24, 2025 at 9:27 AM
I've been on vessels with the password for the BNWAS activation/deactivation posted on a dymo label next to the control unit, so yeah, the fact that accidents like this is so (relatively) rare is a miracle.
March 11, 2025 at 12:59 PM
Look up Selandia Swan, a perfect example of why the BNWAS is so important.
March 11, 2025 at 11:11 PM
Total redundancy in Radars and probably on GPS too.
Driver error in my opinion, nobody conscious on the bridge and the BNWAS switched off.
March 11, 2025 at 10:11 PM
"... autopilot."
"Children of the Magenta Line"...
... plus ECDIS/autopilot on track-follow, ARPA alarms off, collision alarms off, BNWAS disabled, and worse - no-one on the bridge, looking out the f-ing bridge windows!
March 10, 2025 at 2:42 PM
Sjøfartsdirektoratet gjennomførte Port State Control (PSC) på #NCLSalten i #Orkanger. Bridge Navigational Watch Alarm System (BNWAS) var slått av før og under grunnstøtingen, og Skipets ISM-system var ikke i henhold til kravene.
Inspeksjonsrapport klar etter havnestatskontroll
www.sdir.no
May 28, 2025 at 9:30 AM
#お🚢にゅーす

韓国でフェリーが座礁したらしい。
座礁・・・ってか、そこを少しこすったとか、海中の岩礁(海中の見えない大きな岩)に乗り上げたとかそういうのかと思ったら、めっちゃ島に突っ込んでるな。これは居眠り運転くさい。BNWAS勝手に消したりしてた?
まあ、でもこれなら過積載とか荷崩れがなければ満潮時にあっさり引き抜けそう。

韓国のフェリー、あんまり島国という印象がないけど、あっちこっちにフェリーが走ってて、結構乗客もいるの、個人的に謎。

bbc.com/news/article...
South Korea: All 267 passengers and crew rescued after ferry runs aground
The vessel remains stuck on a reef and unable to move, but there is no risk of sinking, the Coast Guard said.
bbc.com
November 19, 2025 at 11:20 PM
And that the BNWAS was disabled or not working.
March 13, 2025 at 2:38 PM
It's confusing. They would have no trouble spotting the tanker on radar. If asleep, or in capacitated km the bridge, the BNWAS should raise alarm to other personnel on the vessel.
March 10, 2025 at 3:47 PM