bine ▁and ▁subst ation ▁transport ▁& ▁installation , ▁cable ▁lay ing , ▁Oper ations ▁& ▁Main ten ance ▁activities , ▁as ▁well ▁as ▁full ▁Engineering , ▁Pro c ure ment , ▁Const ruction ▁and ▁Install ation ▁( EP CI ) ▁and ▁Bal ance ▁of ▁Plant ▁contract s . ▁For ▁oil ▁& ▁gas , ▁services ▁includes ▁land falls ▁and ▁off sh ore ▁civil ▁works , ▁rock ▁pla cement , ▁heavy ▁lift , ▁sub se a ▁construction , ▁um bil ical ▁lay ing ▁and ▁the ▁installation ▁and ▁de comm ission ing ▁of ▁off sh ore ▁platforms . ▁Through ▁its ▁subs idi aries ▁C ath ie ▁Associ ates ▁and ▁G - te c , ▁DE ME ▁Off sh ore ▁provides ▁also ▁ge osci ences ▁expert ise . ▁ ▁DE ME ▁Off sh ore ▁oper ates ▁several ▁vessels : ▁heavy - l ift ▁vessel ▁( Or ion ), ▁jack - up ▁vessels ▁( In nov ation , ▁Apol lo , ▁Sea ▁Inst aller , ▁Sea ▁Ch allen ger , ▁Ne pt une , ▁Thor , ▁G oli ath ), ▁rock - install ation ▁vessels ▁( Fl int stone , ▁Rol ling ▁Stone , ▁Se ah or se ), ▁cable - lay ▁vessel ▁( L iving ▁Stone ) ▁and ▁dr illing ▁vessel ▁ ▁( O mal ius ) ▁ ▁DE ME ▁Environment al ▁Cont ract ors ▁( DE C ) ▁DE ME ▁Environment al ▁Cont ract ors ▁( DE C ) ▁was ▁incorpor ated ▁in ▁ 1 9 9 9 ▁as ▁a ▁mer ger ▁of ▁various ▁DE ME