coxswain
noun /ˈkɒksn/
  /ˈkɑːksn/
- the person who is in charge of a lifeboat and who controls its direction
 - (also cox)the person who controls the direction of a rowing boat while other people are rowing
 
Word OriginMiddle English: from obsolete cock ‘small boat’ + swain. Compare with boatswain.