Dictionary.com
Thesaurus.com

monobuoy

American  
[mon-uh-boo-ee, -boi] / ˈmɒn əˌbu i, -ˌbɔɪ /

noun

Nautical.
  1. a floating platform anchored offshore in deep water and equipped with pipelines leading to storage tanks onshore, to which large, deep-draft tankers moor to load or unload.


Etymology

Origin of monobuoy

First recorded in 1970–75; mono- + buoy