Admiralty list of radio signals.  Vol. 5,  Global Maritime Distress and Safety System (GMDSS). 
 ALRS :  Global Maritime Distress and Safety System. 

 - [2015/16 ed.]. 
 - Taunton, Somerset :  United Kingdom Hydrographic Office,  c2015. 
 - 1 v. :  col. ill., col. maps ;  30 cm. 
<br/><br/> NP 286 (5). 
<br/><br/><label>ISBN: </label>9780707744179 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio in navigation.
<br/><br/><label>LC Class. No.: </label>VK397  / .A36 2015