Almost all the industrial facilities  located along the northern shores of the Gulf of Izmit have a port or jetty structure. Damage to these structures are concentrated within 20km of Golcuk and vary from small displacements to settlement and total collapse. In the naval base, where the fault passes through, damage is extensive. In most cases the attached structures, cranes and the piping systems have collapsed and heavily damaged. In Izmit marina the port structure has slightly displaced and the fill area behind the port heaved. However the marina is operational.  In Derince port the fill area behind the port structure has subsided and caused  overturning  damage to mobile cranes on the rails. In Shell and Klor-Alkali Ports the the jetties have evidently been exposed a strong longitudinal ground pulse that has first push them towards the shore and then pulled them  towards the sea. The second part of this pulse caused slumping towards the sea which took away a substantial portion of the jetty with the mobilized land mass. This motion is most probably directly related with the transverse pulse in the field of the fault rupture as evidenced by the strong motion record at YPT station.

(damage at Degirmendere)

(The damaged jetty in Shell and Klor-Alkali Ports)

(susbsided jetty and damaged piping system)

(overturning damage to cranes at Derince Port)