Authorization
When a vessel has been out to sea for 45 continuous days and has more than 5 days left before coming into port, then a ship captain may request permission from the Numbered Fleet Commander to conduct a beer day.. This authorization is not automatic and is subject to operational commitments, local threat assessments and the Commander's approval. This event is authorized once every 45 days at sea, so once a beer day is held, the ships crew has to wait another 45 continuous days without a port call until another beer day could be authorized.
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