By the Commissioners for Executing the Office of the Lord High Admiral of the United Kingdom of Great Britain and Ireland, &c., &c. Whereas under, and by virtue of, the Act of Parliament, passed in the tenth year of the reign of her present Majesty, intituled an "Act for the Regulation of Steam Navigation," &c., we hereby require, in pursuance of the said act, that lights shall be exhibited by all British steam vessels, between sunset and sunrise, of such description and in such manner as hereinafter mentioned, that is to say-

When Under Weigh.-

1. Bright white light at the foremast head :
2. Green light on the starboard side ;
3. Red light on the port side.

When at Anchor.-

A common bright light.*

The following conditions to be observed, viz. :-

1. The mast-head light to be visible at a distance of at least five miles in a clear dark night, and the lantern to be so constructed as to show a uniform and unbroken light over an arc of the horizon of twenty points of the compass, viz., from right a-head to two points abaft the beam on each side of the ship.
2. The coloured side lights to be visible at a distance of at least two mites in a clear dark night, and the lanterns to be so constructed as to show a uniform and unbroken light over an arc of the horizon of ten points of the compass, viz., from right ahead to two points abaft the beam on their respective sides. :
3. The side lights to be moreover fitted with inboard screens, of at least three feet long, to prevent them from being seen across the bow. The screens to be placed in a fore and aft line with the inner edge of the side lights.

* The lantern used when at anchor to be so constructed as to show a good light all round the horizon.

It is understood to be the intention of the Lords of the Admiralty to issue regulations in accordance with the foregoing announcement, and to have them published in the London Gazette, so that they may he in force from the 21st of July next.- Economist. 29th June, 1848.

SG & SGTL ; Vol 5 ; Page 265 4 Nov 1848.

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