Y 



yaw — /See ship motion. 



yaw angle — See angle of yaw. 



young ice — 1. Newly formed level ice generally 

 in the transition stage of develoiDment from ice 

 rind or pancake ice to winter ice. It is 5 to 15 



centimeters (2 to 6 inches) in thiclcness. (74) 



2. Formerly newly formed level ice between 

 2 and 8 inches thick. 

 young polar ice — (also called two-year tee). 

 Polar ice that has survived its first summer of 

 melting and has passed on to its second year of 

 growth. At the end of its second winter, young 



polar ice may become thicker than 2 meters (6.5 

 feet). It differs from one-year ice in that a 

 greater portion shows above the water surface 

 and any hummocks present show more weather- 

 ing. (74) 



young shore ice — The primary stage of fonna- 

 tion of shore ice. It is of local formation and 

 usually consists of ice rind or thin young ice 

 usually some 10 meters (32.8 feet) wide, but 

 sometimes as wide as 100 to 200 meters (328 to 

 B56 feet). (74) 



yowling — See ice yowling. 



186 



