SAFETY OF LIFE AT SEA C147 



Examples 

 Ice 



TTT Ice. Large berg sighted in 4605 N., 4410 W., at 0800 GMT. May 15. 



Derelicts 



TTT Derelict. Observed derelict almost submerged in 4006 N., 1243 W., at 

 1630 GMT. April 21. 



Danger to Navigation 



TTT Navigation. Alpha lightship not on station. 1800 GMT. January 3. 



Tropical Storm 



TTT Storm. 0030 GMT. August 18. 2204 N.. 1 1354 E. Barometer corrected 



994 millibars, tendency down 6 millibars. Wind NW., force 9, heavy squalls. 



Heavy easterly swell. Course 067, 5 knots. 



TTT Storm. Appearances indicate approach of hurricane. 1300 GMT. 



September 14. 2200 N., 7236 W. (Barometer corrected 29.64 inches, tendency 



down .015 inches. Wind NE., force 8, frequent rain squalls. Course 035, 



9 knots. 



TTT Storm. Conditions indicate intense cyclone has formed. 0200 GMT. 



May 4. 1620 N., 9203 E. Barometer uncorrected 753 millimetres, tendency 



down 5 millimetres. Wind S. by W., force 5. Course 300, 8 knots. 



TTT Storm. Typhoon to southeast. 0300 GMT. June 12. 1812 N., 

 12605 E. Barometer falling rapidly. Wind increasing from N. 

 TTT Storm. Wind force 11, no storm warning received. 0300 GMT. 

 May 4. 4830 N., 30 W. Barometer corrected 983 millibars, tendency down 

 4 millibars. Wind SW., force 1 1 veering. Course 260, 6 knots. 



Icing 



TTT experiencing severe icing. 1400 GMT. March 2. 69 N., 10 W. Air 

 temperature 18. Sea temperature 29. Wind NE., force 8. 



Regulation 4 * 



Meteorological Services 



(a) The Contracting Governments undertake to encourage the collection 

 of meteorological data by ships at sea and to arrange for their examination, 

 dissemination and exchange in the manner most suitable for the purpose of 

 aiding navigation. Administrations shall encourage the use of instruments 

 of a high degree of accuracy, and shall facilitate the checking of such 

 instruments upon request. 



(b) In particular, the Contracting Governments undertake to co-operate in 

 carrying out, as far as practicable, the following meteorological 

 arrangements : — 



(i) To warn ships of gales, storms and tropical storms, both by the issue 

 of radio messages and by the display of appropriate signals at 

 coastal points. 



(ii) To issue daily, by radio, weather bulletins suitable for shipping, 

 containing data of existing weather, waves and ice, forecasts and, 



Ch. 5 



