FIGS. 24, 25, 26. Sperry Gyro-Compass Bearing Repeater With Azimuth Circle.
FIGS. 27, 28, 29, 30. Bearing Repeater Mounted in Pelorus Stand.
Malay pirates use the swift-sailing Proa.
Figure 31.
Sperry Recording Compass
An outstanding feature of the Gyro-Compass is that it makes possible the recording of the actual courses steered by a vessel. The recording compass is connected to the electrical circuits like a repeater and follows the movements of the Master Compass. It not only indicates the heading at any instant, but also makes a graphic record on a chart. Radial lines on the chart represent the various courses. Concentric circles represent time—each small division five minutes—each large division one hour.