238 



SOCIETY NAVAL ARCHITECTS AND MARINE ENGINEERS. 



4. Floeberg. 



5. Field ice. 

 sible to navigate. 



6. Pack ice. 



7. Land ice. 



8. Derelict. 



9. (Not allotted.) 



Thick piece of salt-water ice like a small iceberg. 



Ice extending as far as the eye can reach, but through which it is pos- 



Pieces of ice broken from berg or floe, partly closed together. 

 Ice attached to the shore since the winter. 



The code of the above message would thus be : 

 S.S. to S.S. 



Ice, 1S4S4, 57462 : 15634, 61447 



Part II. 



15784, 64440 : 16214, 73402. 



METEOROLOGICAL INFORMATION. 



Information respecting weather, etc., is given by four groups of five figures each. These 

 groups are preceded by the word "weather." 



First group (DDPPP). — The day of the month; two figures (DD), according to 

 Code I. 



The position of the ship when transmitting the message, indicated by three figures 

 (PPP), representing the 1° square in which the ship is situated, according to Code IV and 

 the numbered chart annexed to this Article. 



Second group ( WWCCX) . — ^Wind direction and force, at 8 a.m. at the 75th. meridian 

 of west longitude; two figures {WW), according to Code V. 



Set and velocity of current; two figures {CC), according to Code VI. 



Weather or state of the sky at the same hour; one figure {X), according to Code VII. 



Third group (BBBAA). — The barometric height to tenths of a millimeter, at 8 a.m. at 

 the 75th meridian of west longitude; three figures (BBB), according to Code VIII. 



Air temperature at the same hour; two figures (AA), according to Code IX. 



Fourth group (bbSSS). — Barometric tendency, at 8 a.m. at the 75th meridian of west 

 longitude; two figures (bb), according to Code X. 



Sea-surface temperature at the same hour; three figures (SSS), according to Code XL 



CODES. 



Code IV. — Position of vessel. 

 The chart annexed to this Article gives the numbers to be assigned to each 1 ° square in 

 the North Atlantic. The position of the ship, when the meteorological data given in Part 



