Web alarm clock for 3:19 a.m.
You are midway through sorting bags or checking a passenger message when the 3:19 am alarm needs to pull you away to meet the night ferry at the pier. Set it for the exact time before returning to what you are doing, so the task does not carry you past departure preparations. With 4:00 am approaching, the alert leaves time to reach the waterfront without treating the round hour as your cue.
Your ferry pickup may already have an engine, electric fan, television, or conversation filling the room, so choose a strong alert volume and test whether you can hear it from where you are working. Keep the phone close instead of leaving it beneath clothes or inside a bag. The alarm will not sound if you close this browser page or let the phone sleep, which could leave the ferry arriving with nobody waiting at the pier.
Before leaving for the pier, listen for what is masking the alert rather than assuming the night is quiet. Traffic may thin by 3:19 am, yet rain on a metal roof, barking dogs, karaoke nearby, or a running air conditioner can still cover a brief signal. Lower one source of noise, use vibration as a second cue, and place keys beside the phone so waking to the alarm leads straight into leaving.