BNWAS - Dormancy-Alert Timing
Bridge Navigational Watch Alarm System - dormancy period then stage 1 → 2 → 3 alarm per SOLAS V Reg. 19.2.2.3.
Stage 1 (reset only)
12.0min
Stage 2 (bridge audible + visual)
12.5min
Stage 3 (master/ship-wide)
13.5min
Formula, assumptions, and limits
Dormancy 3–12 min per master selection. Stage 2 at 30 s after stage 1; stage 3 at 90 s. All alarms must be silenced from OOW station. Required on all SOLAS ships ≥ 150 GT.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Period before first reset prompt | min | SOLAS V Reg.19 |