LCC20 121: Underwater Log

Question 1

what is it used for

Answer 1

used to measure speed and distance traveled

Question 2

rod meter (pit sword)

Answer 2

houses the speed sensing element of the log system

Question 3

dummy log

Answer 3

sends a simulated electrical signal when the pit sword is not in use.

Question 4

Sea Valve

Answer 4

water tight support for the pit sword and allows removal and installation while ship remains in water.