OFFSHORE OIL AND GAS FIELD RESTRICTED AREA

Production platforms and associated structures, including tanker moorings, 
storage tankers and platform on pipelines, generally exhibit Mo(U) lights, 
aircraft obstruction lights and audible fog signals. 
Mariners are advised not to anchor or trawl in at least 500 - 1750 metres
from all structures due to the pipelines and other submarine installation existences in this area. 
Submarine pipelines are not always buried and may also span seabed undulation it may effectively reduce the charted depth.

