1. NS100 Navigation Instrument s Fundamentals of Naval Science

2. Measurement of Direction Azimuth Circle

4. Measurement of Direction Telescopic Alidade

6. Measurement of Distance Radar

7. Measurement of Distance Stadimeter - very accurate under 2000 yards

9. Measurement of Speed Terms: Speed over Ground - “True” speed, or speed relative to the earth. Speed through the water - Relative speed between the water and the ship, not accounting for the effect of current or seas.

10. Measurement of Speed Impeller Log

11. Measurement of Speed Pit Log Dynamic pressure static pressure

12. Measurement of Speed Doppler Speed Log – can be extremely accurate Shaft RPM vs. speed

13. Measurement of Depth Fathometer