Require Tug Signal Flag Picture
International Code of Signals – Nautical flag used by ships at sea and the U.S. Navy. The flag is described as having a square shape with four interlocking triangles that are yellow, blue, red and black. The flag represents the letter Z or phonetic Zulu.
Z – ZULU, Require Tug
“I require a tug” or “I am casting nets”
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