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Signs and boards warning seafarers for
high-voltage overhead lines must have a
self-reflecting surface.
The signs and boards are made of 2 mm sheet
aluminium, edges bent, three sizes, high intensive
reflecting foil. Symbols and text are black on
white background.
Red border surrounds the edges, a red diagonal
line on prohibitive signs. Recommended height from
the ground to the lower side of the sign is
1200-1500 mm, making them clearly visible to
seafarers. |