SS Üsküdar was a small passenger ferry built in Germany for the Turkish company Şirket-i Hayriye and launched in 1927.

She was the first of two identical vessels the Turkish urban transportation company Şirket-i Hayriye commissioned in the Republican era.

[1] As the ferry headed to Değirmendere, high waves raised by the storm blowing at 130 km/h (81 mph) rocked the small vessel.

Water filled the engine room and the front passenger department after breaking the window glass.

[1] 26 minutes from her departure, SS Üsküdar careened over on the port side and sank at 12:53 local time.