FOREWORD 



During the summer and autumn of 1956, there was 

 considerable activity of U . S. Navy ships in arctic waters. 

 The operating areas of these ships offered excellent oppor- 

 tunities for the collection of oceanographic information in 

 support of the Hydrographic Office's arctic program. 



Personnel from the U.S. Navy Hydrographic Office 

 were aboard four vessels and made oceanographic observa- 

 tions whenever the primary objectives of the operations 

 permitted. The results of these observations are presented 

 in this report. 



Rear Admlfel, U.S. Navy 



HJ I 



