Design
The PT-76 has a typical tank layout: the steering compartment at the front, the combat compartment in the center and the engine compartment at the back. The tank has a three-man crew, with the commander also acting as the radio operator and gunner. This reduces his effectiveness as an observer. The commander and loader stations are located inside the turret, the commander sits on the left-hand side of the main gun and the loader sits on the right. They have a large oval shaped double hatch which opens forwards on top of the turret. The driver sits in the center of the front of the hull and has a one piece hatch that opens to the right, with three vision blocks and periscopes located beneath the main gun at the top of the sloping glacis plate. Under the driver's seat there is an emergency hatch which can be used by all crew members. At night the center periscope is swapped for a TVN-28 night vision device which gives the driver clear vision up to 60 meters.
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