Anchorage areas are available for ships in the outer harbor, providing water depths from 6 to 40m in good holding ground. Smaller vessels can anchor in the area north of the oil harbour approach channel and west of the inner harbour approach channel. Vessels with a draft of ten meters or more can anchor to the south of the oil harbour approach channel. They generally anchor to the west of the main approach channel to both harbours. Anchorage is prohibited within a radius of 5 cables of the channel entrance and within 2 cables of any port approach channel.
Vessels are warned that many disused cables exist in the area between Ras Tarshayn and Jazirat Salil. A fibre–optic cable is laid from SSE of the port entrance to the shore (see Admiralty Chart No. 7) and anchoring near this cable must be avoided.