The three-cylinder Class 5700 tank engines were acquired in the 1950's as helper and banking machines to complement 2-10-0 tender lokomotives on heavy mountain grades. They are similar to DB baureihe 85 tank engines, but they have a larger boiler and firebox.
TCDD tank engine 5703 resting at
Sazlidere.
TCDD tank engine 5703 resting at
Sazlidere.
TCDD tank engine 5703 shoving on the
rear of a heavy goods train at Ulugecit Pass.

TCDD tank engine 5703 shoving hard on the rear of heavy coal train at
Ulugecit Pass.
TCDD 56134 and 56085 are working hard as they climb Ulugecit Ramp as tank
engine 5703 returns light to Kemalpasa for another banking assignment.