PERMEABLE MOLES TO IMPROVE MARINA WATER EXCHANGE  <B>PERMEABLE MOLES TO IMPROVE MARINA WATER EXCHANGE</B><P>Izmail G. Kantardgi1, and Yury I. Dreizis2</B><I><P> 1 Prof., Dr., Ecology Institute, ViceRector, 484, Maiakovskogo street, Zheleznodorozhny, Moscow Region, 143980, Russia Phone: +(095) 522 23 84 (h) Fax:+(095) 257 77 92 EMail: ikantar@patience.msk.ru<P> 2 D.Sc., Institute of Recreation and Tourism, Assoc.Prof. 26a, Sovetskaia street, Sochi, 354000, Russia Phone: +(8 622) 936 257, +(8 662) 970 317 (h) Fax: +(8 662) <P> 790 Email: postmast@elite.sochi.su</I><P> Abstract<P> The modelling of the marina near Anapa city, Black Sea coast have been carried out. The configuration of the marina protected breakwaters is chose to protect the marina area of the incoming wave impact, to guarantee the need water exchange and to preserve the existing sand beach in the neighbour bay "Malaya". The breaking wave induced currents are considered as a main factor of water exchange. Moreover, the forced flushing of the marina is tested. The whole shoreline duration of the study area is about 760 m. Physical modelling have been carried out in the wave basin (41x33.5x1.7 m) with scale 1:40. The several variants of the mole configuration are tested, the whole duration of the protected moles is about 500 m. The best results both for wave damping and marina flushing are obtained with the permeability of the root part of the western mole. The 105 flushing ports with diameter 32 cm and with whole area 7.42 m2, placed with the distance 2 m from each other give the need permeability of the mole. The last value was computed before physical testing by the numerical modelling of the wave transmission through the permeable structures. The using of the shutters at the each port gives the possibility to control the direction of the flushing flow to the marina, only. Additionally, the construction of the caisson with duration 100 m in the front of the western marina mole from the sea side is tested. Due the wave setup, the strong flow inside the marina is generated in this case. The combine using of the permeable mole and caisson gives the best conditions for water exchange. The forced pumping is considered as an alternative variant of the marina flushing. The sea water is pumped to the marina through the system of the permeable pipes, placed in the marina along the perimeter of the moles. The propagation of the inflows to the marina is studied by the numerical modelling. also. The comparison of the measured and calculated flow velocities shows the good correlation.<P>