THE HONGKONG GOVERNMENT GAZETTE, JANUARY 13, 1911.
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A steam vessel shall be provided with an efficient whistle or siren, sounded by steam or some substitute for steam, so placed that the sound may not be intercepted by any ob- struction, and with an efficient fog-horn, to be sounded by mechanical means, and also with an efficient bell.* A sailing vessel of 20 tons gross tonnage or upwards shall be provided with a similar fog-horn and bell.
In fog, mist, falling snow, or heavy rain-storms, whether by day or night, the signals described in this Article shall be used as follows, viz.:-
(a.) A steam vessel having way upon her, shall sound, at intervals of not more than
2 minutes, a prolonged blast.
(b.) A steam vessel under way, but stopped and having no way upon her, shall sound, at intervals of not more than 2 minutes, 2 prolonged blasts, with an in- terval of about 1 second between them.
(c.) A sailing vessel under way shall sound, at intervals of not more than 1 minute, when on the starboard tack one blast, when on the port tack two blasts in succession, and when with the wind abaft the beam three blasts in succession. (d.) A vessel, when at anchor, shall, at intervals of not more than 1 minute, ing
the bell rapidly for about 5 seconds.
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(e.) A vessel, when towing, a vessel employed in laying or in picking up a telegraph
cable, and a vessel under way, which is unable to get out of the way of an ap proaching vessel through being not under command, or unable to manœuvre as required by these Rules shall, instead of the signals prescribed in sub-divisions (a) and (e) of this Article, at intervals of not more than two minutes, sound three blasts in succession, viz.:
one prolonged blast followed by two short blasts. A vessel towed may give this signal and she shall not give any other,
Sailing vessels and boats of less than 20 tons gross tonnage shall not be obliged to give the above-mentioned signals, but if they do not, they shall make some other efficient sound- signal at intervals of not more than 1 minute. †
Speed of Ships to be Moderated in Fog, &c.
Article 16. Every vessel shall, in a fog, mist, falling snow, or heavy rain-storms, go at a moderate speed, having careful regard to the existing circumstances and conditions.
A steam vessel hearing, apparently forward of her beam, the fog-signal of a vessel the position of which is not ascertained, shall, so far as the circumstances of the case admit, stop her engines, and then navigate with caution until danger of collision is over.
Steering and Sailing Rules.
Preliminary-Risk of Collision.
Risk of collision can, when circumstances permit, be ascertained by carefully watching the compass bearing of an approaching vessel. If the bearing does not appreciably change,
such risk should be deemed to exist.
Article 17. When two sailing vessels are approaching one another, so as to involve risk of collision, one of them shall keep out of the way of the other, as follows, viz.
(a.) A vessel which is running free shall keep out of the way of a vessel which is
close-hauled.
(b.) A vessel which is close-hauled on the port tack shall keep out of the way of a
vessel which is close-hauled on the starboard tack.
(c.) When both are running free, with the wind on different sides, the vessel which
has the wind on the port side shall keep out of the way of the other.
(d.) When both are running free, with the wind on the same side, the vessel which is to windward shail keep out of the way of the vessel which is to leeward. (e.) A vessel which has the wind aft shall keep out of the way of the other vessel.
* In all cases where the Rules require a bell to be used a drum may be substituted on board Turkish vessels, or gong where such articles are used on board small sea-going vessels,
Dutch steam pilot-vessels, when engaged on their station on pilotage duty in fog, mist, falling snow, or heavy rain-storms are required to make at intervals of 2 minutes at most one long blast with the siren, followed after 1 second by a long blast with the steam whistle and again after 1 second by a long blast on the siren. When not engaged on their station on pilotage duty, they make the same signals as other steamships.
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