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Minesweeping Day Shape
Rule 27(f): Three black balls: one at foremast head, one at each fore-yardarm end. Danger 1000 m ahead, 500 m each side.
Minesweeping
Three black balls: one at foremast head, one at each fore-yardarm end
Danger 1000 m ahead, 500 m each side
Rule 27(f)
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