Wilkes, Kenneth. <br/><br/>
Exercises for the ocean yacht navigator / 
Kenneth Wilkes. 
 - Lymington :  Nautical Publishing Co.,  1976. 
 - 176 p. :  ill., charts ;  21 cm. 
<br/><br/> With answers. 
<br/><br/><label>ISBN: </label>0245528717 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nautical astronomy--Problems, exercises, etc.<br/>Navigation--Problems, exercises, etc.
<br/><br/><label>LC Class. No.: </label>VK555 
<br/><br/><label>Dewey Class. No.: </label>527/.02/47971  / WIL 1976