If you look at this shot mostly behind the door frame in front of Doug a little bit of the gyro repeater can be seen,
Here’s a shot of Chief Al, between the two yellow compensation spheres (navigator’s balls) the top of the magnetic compass can be seen. The auto pilot mechanism bridges across the top of the compass. It’s hard to see but there is a small knurled knob just above the stbd ball on the auto pilot. Course changes could be made by turning that knob. That’s probably where Doug has his left hand in the first photo.
Because the magnetic compass heading couldn’t be trusted the knob could be turned (you could hear a relay energizing and see the rudder angle indicator move) till the desired gyro course was reached.
Of course after the gyro failed you’d just set the course by eye, either steering by hand or by mike. The throttles and steering joy stick can also be seen.
One more shot, alongside in Dutch, the Snowbird, in all her non-SOLAS glory.
Photos are mine but also posted on this thread; YO and FS Hulls