also: しるしばた
noun
identification flag; marking flag
A flag used for identification or marking purposes, such as in surveying, military, or maritime contexts.
測量士は標旗を立てて位置を示した。
The surveyor set up a marking flag to indicate the position.
船は標旗を掲げて国籍を示した。
The ship hoisted an identification flag to show its nationality.
Compound of 標 (hyō, 'mark/sign') and 旗 (ki, 'flag'). The reading しるしばた is a kun'yomi compound of 印/標 (shirushi, 'mark') and 旗 (hata, 'flag'), possibly an older or dialectal form.