SUBMARINE CABLES AND PIPELINES Mariners are advised not to anchor or trawl in the vicinity of submarine cables and pipelines. Furthermore, anchoring or trawling is prohibited within 1·5 miles of all pipelines in the Mubarraz Oilfield (Concession Area), centred on 24°30ŽN, 53°42ŽE. Pipelines are not always buried and their presence may significantly reduce the charted depth. They may also span seabed undulations and cause fishing gear to become irrecoverably snagged, putting a vessel in severe danger.