Page:United States Statutes at Large Volume 79.djvu/1507

 79 STAT. ]

PROCLAMATION 3 6 3 2 - D E C. 29, 1964 "Rule 30 "Reservation of Rules for Harbours and Inland Navigation

"Nothing in these Rules shall interfere with the operation of a special rule duly made by local authority relative to the navigation of any harbour, river, lake, or inland water, including a reserved seaplane area. "Rule 31 "Distress Signals " (a) When a vessel or seaplane on the water is in distress and requires assistance from other vessels or from the shore, the following shall be the signals to be used or displayed by her, either together or separately, namely— " (i) A gun or other explosive signal fired at intervals of about a minute. "(ii) A continuous sounding with any fog-signalling apparatus. "(iii) Rockets or shells, throwing red stars fired one at a time at short intervals, "(iv) A signal made by radiotelegraphy or by any other signalling method consisting of the group... ... in the Morse Code. "(v) A signal sent by radiotelephony consisting of the spoken word 'Mayday'. "(vi) The International Code Signal of distress indicated by N.C. "(vii) A signal consisting of a square flag having above or below it a ball or anything resembling a ball. "(viii) Flames on the vessel (as from a burning tar barrel, oil barrel, &c.). "(ix) A rocket parachute flare or a hand flare showing a red light. " (x) A smoke signal giving oflf a volume of orange-coloured smoke. "(xi) Slowly and repeatedly raising and lowering arms outstretched to each side. "NOTE.—Vessels in distress may use the radiotelegraph alarm signal or the radiotelephone alarm signal to secure attention to distress calls and messages. The radiotelegraph alarm signal, which is designed to actuate the radiotelegraph auto alarms of vessels so fitted, consists of a series of twelve dashes, sent in 1 minute, the duration of each dash being 4 seconds, and the duration of the interval between 2 consecutive dashes being 1 second. The radiotelephone alarm signal consists of 2 tones transmitted alternately over periods of from 30 seconds to 1 minute. " (b) The use of any of the foregoing signals, except for the purpose of indicating that a vessel or seaplane is in distress, and the use of any signals which may be confused with any of the above signals, is prohibited. " A N N E X TO THE RULES "RECOMMENDATIONS ON THE USE OF RADAR INFORMATION AS AN AID TO AVOIDING COIXISIONS AT SEA

"(1) Assumptions made on scanty information may be dangerous and should be avoided. "(2) A vessel navigating with the aid of radar in restricted visibility must, in compliance with Rule 16(a), go at a moderate speed. Information obtained from the use of radar is one of the circumstances to be taken into account when determining moderate speed. In this regard it must be recognised that small vessels, small icebergs and similar floating objects may not be detected by radar. Radar indications of one or more vessels in the vicinity may mean that "moderate speed"

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