Starting Thursday, Aug. 25, Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY&IMF) will resume use of the shipyard’s horn.
The horn will sound at the beginning and ending of work shifts and lunch breaks. Officials say it’s historically been the most effective method to communicate the day-to-day rhythm of the shipyard workforce of more than 5,000 personnel — military, civilian, and contractors.
This will be the first use of the refurbished horn since 2013.
The horn, which will sound from Building 149 on PHNSY&IMF, may be heard across Joint Base Pearl Harbor Hickam and at some locations adjacent to the base.
Horn signals will mark the following events during the shipyard work day:
- 6:25 a.m. – Five-minute alert to the start of first shift (5 second tone)
- 6:30 a.m. – Start of first shift (10 second tone)
- 11:00 a.m. – First shift lunch break (10 seconds)
- 11:30 a.m. – Return to work following first shift lunch break (5 seconds)
- 3:00 p.m. – End of first shift, beginning of second shift (10 seconds)
- 6:30 p.m. – Second shift lunch break (10 seconds)
- 7:00 p.m. – Return to work following second shift lunch break (10 seconds)
Alerts on the shipyard horn will not be sounded after 7 p.m., nor will they sound on weekends or federal holidays.