Anchor light

a 32-point light, visible from at least two miles away, shown at night near the bow and not more than 20 feet (6 meters) above the deck of a vessel lying at anchor.
Historical Examples

But he never lost sight of this anchor light for more than a few moments at a time.
The Meadow-Brook Girls Afloat Janet Aldridge

She was just discernible by the dim rays of the anchor light.
A Labrador Doctor Wilfred Thomason Grenfell

“Yonder’s my ship,” he said, indicating the anchor light of a large steamer.
The Strand Magazine Various

The anchor light tossed against the portentous gloom of the land.
Wyndham’s Pal Harold Bindloss

All he could see of the “Red Rover” was the anchor light, the night being very dark and a little hazy.
The Meadow-Brook Girls Afloat Janet Aldridge

They watched the “Red Rover” together until all the lights except the anchor light, had been put out.
The Meadow-Brook Girls Afloat Janet Aldridge

The anchor light seemed to fade away and merge into thin air before his very eyes.
The Meadow-Brook Girls Afloat Janet Aldridge

On the upper were two head-lights with a ship’s anchor light (Fresnel lens) between them.
The Gold Diggings of Cape Horn John R. Spears

There are the sidelights, the binnacle light, and the anchor light.
The Cruise of the Snark Jack London

It was coming on dark by then and I could see them making ready the anchor light on the Svend Foyn.
Sonnie-Boy’s People James B. Connolly