21st century seamanship/ 
Witherby Seamanship international. 
 - UK:  Witherby Seamanship international.  2015. 
 - 1289 p.;  pbk.  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cargo ship types.<br/>Oil spills.<br/>Stability.
<br/><br/><label>Dewey Class. No.: </label>623.88   / SEA