Maritime and Coastguard Agency (Great Britain). <br/><br/>
Proper use of VHF channels at sea / 
Maritime and Coastguard Agency.  
 - Southampton :  Maritime and Coastguard Agency,  1998. 
 - 7 p. :  ill. ;  30 cm. +  pbk. 
 - Marine guidance note ;  MGN 22 (M+F) .
 - Marine guidance notes. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio in navigation.<br/>Ships--Safety regulations<br/>Boats and boating--Safety regulations.
<br/><br/><label>Dewey Class. No.: </label>623.893