Bridge watchkeeping :  a practical guide / 
Nautical Institute. 
 - London :  Nautical Institute,  1994. 
 - 180 p. ;  29 cm.  
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>1870077172 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Merchant marine--Watch duty.
<br/><br/><label>Dewey Class. No.: </label>623.89