How to use the online alarm clock
Handing the watch to someone else means making the tide check unmistakable before the fishing boat leaves. Set the alarm for 2:52 am, explain what must be checked, and confirm who will respond when it sounds. That leaves a brief handover window before 3:00 am without relying on either person to keep watching the clock.
The right sound depends on where the next crew member will be waiting. A gentle tone may suit a quiet wheelhouse, while a persistent one is more sensible if engines, radios or work on deck could mask the first notes. Keep this browser alarm active and the computer or phone awake; otherwise the tide check may pass without any alert sounding.
Before leaving the night watch, listen from the position where the other person will actually be working. Background noise can shift quickly as equipment starts, crew arrive and harbour activity picks up towards 3:00 am. Place the phone or computer clear of coats and paperwork, raise the volume enough to stand above that changing noise, and use vibration as an extra cue if the device supports it.
Common questions
Can I use this on a phone?
It works in a mobile browser, but phones lock the screen and suspend background tabs far more readily than a laptop does, which can stop the alarm sounding. For anything important, a desktop or a plugged-in laptop is the steadier option.
Does the alarm still work if I close the tab?
No. Everything runs inside this page, so closing the tab — or quitting the browser altogether — ends the countdown there and then. Leaving it open in the background is all it asks, and switching to another tab makes no difference.
What happens if my laptop goes to sleep before 2:52 am?
The tab sleeps along with it and the alarm will not sound on time, if at all. If you are relying on it, change the power settings so the machine stays awake, or keep a phone alarm running as well.
Do I need an account or an app?
Neither. Choose a time and a sound, press Start, and it runs in this browser tab. Nothing is downloaded, nothing is registered, and closing the page leaves nothing behind on the device.
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