tattoo

In naval practice, tattoo is a drum or bugle signal sounded five minutes before taps, announcing to personnel that the working day is finished and that lights will be extinguished shortly. It serves as a formal warning to secure stations, complete final tasks, and prepare for rest. The signal is part of the shipboard routine that structures the day for both active crews and those in port.

The term originates from the Dutch taptoe, literally meaning "close the tap" or "turn off the tap," referring to an order in 17th-century taverns to stop serving alcohol as closing time approached. When Dutch seafaring traditions merged with British naval practice, the word became anglicized as "tattoo" and acquired its modern meaning as a regimented evening call.

Tattoo is played on the same instruments as taps, most commonly a bugle or drum, and follows a specific rhythmic pattern that is recognizable to all hands. The signal is sounded ship-wide through the general announcing system or by a musician positioned where it carries through berthing compartments and work spaces. On smaller vessels without electronic systems, a bosun's mate may sound it on a traditional pipe or drum.

The five-minute interval between tattoo and taps gives personnel time to finish writing logs, stow tools, secure equipment, and move to sleeping quarters without rush. In shipyard work, tattoo may mark the transition from day shift to evening maintenance or alert night-watch personnel to begin their preparations. The regularity of this routine is critical for maintaining discipline and ensuring all personnel understand the operational schedule.

Tattoo appears in standing orders and watch bills aboard all naval vessels and many commercial ships that maintain formal maritime routine. Its place in the daily schedule remains largely unchanged from the 19th century, though electronic announcing systems have replaced much of the traditional live signaling. Understanding tattoo as a formal call rather than a casual announcement distinguishes properly run vessels from those operating without established shipboard protocol.