This mission was a rendezvous flight with Vostok 4. Both spacecrafts came close to 6.5 km (visibility), although the Vostok capsules had no maneuvering capability. They quickly drifted apart. Vostok 3 also conducted several scientific observations and further improvement of the space ship systems, communications (spaceship ground control and spaceship to spaceship), guidance and landing. There were no problems with his spacesuit, but there was only a minor problem with the Tral telemetry system.