Chapter 10 Ships Order Indicating and Metering Systems

CHAPTER 10

SHIP'S ORDER INDICATING

AND METERING SYSTEMS

LEARNING OBJECTIVES

Upon completion of this chapter you will be able to do the following:

Describe the purpose of the ship's order indicating and metering systems.

Identify the various types of control consoles used with the ship's control order

and indicating systems.

Describe the operation of the ship's control order and indicating systems.

Describe the operation of some of the various metering and indicating systems

installed on Navy ships.

Describe the function of gears.

Identify the basic types of gears and their uses.

Describe the operation of various gear mechanisms.

Briefly describe the troubleshooting and maintenance procedures for various

ship's order indicating and metering systems.

ships will be discussed in this training manual. For

INTRODUCTION

information on the consoles installed on the newer gas

To operate a ship properly, watch personnel

turbine ships, refer to the applicable Ship Information

require vast quantities of information relative to

Book.

conditions within and outside the ship. Ship's order

indicating and metering systems are installed on ships

SHIP'S CONTROL CONSOLE

to measure and transmit this information.

The ship's control console incorporates, in a

single unit, the equipment required to transmit orders

SHIP'S CONTROL ORDER AND

relative to the speed of the ship. Figure 10-1 is an

INDICATING SYSTEMS

illustration of a double engine order ship's control

console. The order and indicator systems associated

Ship's control order and indicating systems

with the console are the propeller revolution order and

consist of the (1) propeller revolution order system

the engine order. The ship's control console also

(circuit M), (2) engine order system (circuit MB), (3)

contains circuits for control of the ship's speed lights.

rudder angle indicator (circuit N), (4) rudder order

The speed light circuits are maintained by the

(circuit L), and (5) steering emergency alarm signal

Electrician's Mates.

(circuit LB). On the older ships, the equipment for

these circuits is mounted in a ship's control console

Propeller Revolution Order System

and a steering control console. On the newer gas

turbine ships with automated propulsion systems, the

ship's control and steering consoles are combined into

The propeller revolution order system (circuit M)

one console using state of the art circuitry and

transmits the required propeller revolutions per

equipment. Only the consoles installed on the older

minute (rpm) from the pilothouse to each propulsion

10-1