1 30 NAVIGATION. 



is bound to bear up> or heave about to avoid dan- 

 ger. If the latter does not give way, her owners 

 will be answerable for any injury the vessel on the 

 starboard tack may sustain by their coming in con- 

 tact. 



Musts and Yards. 



Ft. In. 

 Suppose the extreme breadth of beam 7 .~ Q 



of a 44 gun frigate to be j 



Multiply by .... 2 



Length of the main yard .... 87 

 And one-sixth of the sum ... 1 4 6 



Length of the main-mast . . . .101 6 



Foremast 93 8 



Mizen-mast 93 8 



Mainyard ...*.... 87 



Foreyard . , . 82 



Bowsprit ... G2 



Hollow masts of iron for the navy are now con- 

 structing as an experiment. 



Admiral of the Red. 



There is no admiral of the red squadron, the red 

 flag having been laid aside on the union of England 

 and Scotland, when the union flag was adopted in 

 its place, and is usually hoisted by the Commander- 

 in-chief* 



Green Water. 



Green water at sea generally indicates shallows, 

 and blue a deep sea. 



Captain Parry's Voyage. 

 In Captain Parry's voyage of 1819-20, the great- 



