OIL AND GAS PIPELINES

Mariners are advised not to anchor or trawl
in the vicinity of the pipelines. Gas from a
damaged oil or gas pipeline could cause an 
explosion, loss of a vessel's buoyancy or
other serious hazards. Pipelines are not 
always buried and may effectively reduce
the charted depth by up to 2 meters. They
may also span seabed undulations and
cause fishing gear to become irrecoverably
snagged, putting a vessel in severe danger.