Records

RECORDS

compass be removed from the ship, its service record

book accompanies it.

The PMS of the 3-M Systems has cut the records

and inspections of the gyrocompass to a minimum.

Naval Ships' Technical Manual, chapter 252, no longer

requires lengthy records to be kept on gyrocompass

SUMMARY

equipment; however, it specifically requires the record

book that is sent with each compass to be scrupulously

In this chapter, we have discussed basic gyroscopic

maintained.

principles and the making of the gyroscope into a

gyrocompass. We have identified and discussed the

The gyrocompass service record book is used to

major components of some of the most common

record important repair information (major part

gyrocompass systems installed on board Navy ships

replacement, overhaul, and field change installation),

today and described the procedures for starting, standing

providing a continuous repair history of each

watch on, and securing these gyrocompasses.

gyrocompass. Instructions for maintaining the record

book are given in the front of the book.

We have also described the purpose of the synchro

The service record book remains with the master

signal amplifiers and ship's course indicators used with

gyrocompass throughout its service life. Should the

the various gyrocompass systems.