on deck

English

(nautical) On the deck of a ship, especially of a captain or officer; in charge.
- 1899 September – 1900 July, Joseph Conrad, chapter 19, in Lord Jim: A Tale, Edinburgh, London: William Blackwood and Sons, published 1900, →OCLC, page 213:
  In every sense of the expression he is ‘on deck’; but my Jim, for the most part, skulked down below as though he had been a stowaway.
(baseball) Being the batter who will be up next, typically when that player is waiting on the field.
Jones is the on-deck batter.

on the deck of a ship