Dredging International’s client ZAO Tamanneftegas is in the process of developing an LPG and Crude Oil Terminal at the Port of Taman. There is an existing finger jetty of approximately 2,000 m in length that connects the Terminal to Berths 5 and 6.
The access channel and the berthing areas needed to be dredged to accommodate vessels of 120,000 DWT with a draught of 14 m.
Dredging works comprised the deepening of an access channel, turning basin and berthing areas at Berth 5 (South) and 6 (North) and the disposal of the dredged material offshore at a distance of 17 nm. The access channel is designed for one-way traffic and has a bottom width of 200 m.
The existing water depth in the access channel varied from approximately -14.5 m to 15.5 m. The existing water depth in the turning basin varied from -12 m to -13 m and in the areas North and South of the existing jetty the water depth was -12.5 m and 13.5 m respectively. The final dredging depth was -15.8 m in the access channel and -16.1 m in the turning basin and at Berths 5 and 6.
The soils dredged comprised an upper layer of soft marine clays followed by stiff clays and in the berthing areas the stiff clays could be underlain by weak claystone. Total dredging quantities were 2.73 million m³.
During the project Dredging International encountered extremely challenging weather conditions with a dry Siberian east wind that sometimes reached up to 60 knots at temperatures down to -25°, not counting wind chill.