topside

/T AA1 P S AY1 D/
noun
  1. 1

    The side or part of something that is at the top.

  2. 2

    The surface of a shipโ€™s hull that is above the water line.

  3. 3

    The structure and assembly of modules above the jacket or gravity base sub structure.

  4. 4

    The structure and assembly of modules on the deck of any floating installation.

  5. 5

    The outer side of a round of beef.

adjective
  1. 1

    Above decks, such as on the weather deck or bridge.

Source: https://en.wiktionary.org/wiki/topside