Boatswain's Mate 14343 Study Guide

Front 1

Which of the following descriptions best defines the hoist on a signal flag?

Back 1

The hoist is the part of the flag that hauls up the next flag in the signal

Front 2

A signal should be read from what direction?

Back 2

Top down and from outboard in

Front 3

When a signal is long enough to be shown in three displays, where should the heading be hoisted?

Back 3

On a seperate halyard and kept flying until the last hoist of the text is hauled down

Front 4

You want a flag hoist display to read MIKE, MIKE, OSCAR, MIKE, ALFA. Which of the following flags should you fly?

Back 4

MIKE, FIRST SUBSTITUTE, OSCAR, SECOND SUBTITUTE, ALPHA

Front 5

The absence of both the unit commander and the commanding officer from an anchored flagship for less than 72 hours is indicated by the flying of what pennant(s)?

Back 5

First substitute pennant outboard at the starboard yardarm and the third substitute pennant outboard at the yardarm

Front 6

You are aboard a cruiser having the hull number 148. When no other cruisers are in the vicinity, the visual call sign for your ship is represented by the flag display

Back 6

Cp4p8

Front 7

What flag should your ship fly when transferring fuel or explosives?

Back 7

BRAVO

Front 8

Your ship is preparing the berth with its port side to the starboard side of a ship at Bremerton Navy Yard. What is the proper signal display for your ship?

Back 8

INDIA at the dip on the port yardarm

Front 9

You are standing petty officer of the watch and recognize your ship’s call sign followed by Juliet hoisted on another ship. What does this mean?

Back 9

The ship has a semaphore message for your ship

Front 10

What flag should your ship fly when it has the medical duty for the day?

Back 10

MIKE

Front 11

CG46 of your task unit has the visual communications duty in port. What flag should CG46 be flying from its foretruck?

Back 11

YANKEE

Front 12

What flag(s) is/are carried made up and ready to break?

Back 12

OSCAR and FIVE

Front 13

In the United States, which of the following weather signals is hoisted by day to indicate a gale warning?

Back 13

Two red pennants

Front 14

Which of the following lights displayed by the national weather service on a station indicates small craft warnings?

Back 14

A red light over a white light

Front 15

Why are radiotelephone (R/T) transmissions the LEAST secure method of communicating?

Back 15

There is no way to prevent unathorized interception

Front 16

Which of the following actions can result from poor circuit discipline?

Back 16

All of the above

Front 17

Which of the following security precautions is NOT required of a R/T operator?

Back 17

Writing every message before transmission

Front 18

Before transmitting a message on a voice radio circuit, which of the following techniques should you always practice?

Back 18

Make sure no one else is using the circuit

Front 19

For transmitting a message by R/T, proper speaking technique is to

Back 19

speak naturally, by phrases

Front 20

For R/T transmissions, you should concentrate on keeping your voice at what level?

Back 20

Moderately strong

Front 21

Difficult words in plain text messages may be spelled out if preceded by the proword

Back 21

I SPELL

Front 22

If you are transmitting a R/T message worded so that the addressee might confuse numbers with words, you should precede the numbers by proword(s)

Back 22

FIGURES

Front 23

By voice radio, the number 16,000 is spoken as

Back 23

WUN SIX TOU-SAND

Front 24

Voice calls normally consist of

Back 24

spoken words

Front 25

What are the two types of voice calls?

Back 25

Collective and unit

Front 26

What is the minimum number of stations necessary to constitute a radio net?

Back 26

Two

Front 27

When a message is transmitted and a repetition is requested by a called station, what proword is used?

Back 27

SAY AGAIN

Front 28

An error is made in a R/T transmission. When should the operator send the proword correction?

Back 28

Immediately before the break

Front 29

When can a message that has already been transmitted be canceled?

Back 29

At any time during transmission

Front 30

Another station requests a radio check, the signal received is strong and of satisfactory quality. What would you reply?

Back 30

ROGER

Front 31

Under which of the following conditions must a R/T message be authenticated?

Back 31

When there is any chance that the message may be of enemy origin

Front 32

You are assisting a BM2 in adjusting the tensions in shrouds of the mast. First you slack the shrouds and then remove that slack from them. At this point the second class is called away, but tells you to complete the job. How much should you tighten each turnbuckle?

Back 32

1 inch for each 60 feet of shroud

Front 33

How often should all rigging be inspected?

Back 33

As indicated by PMS

Front 34

A block's size is determined by measuring its

Back 34

Cheek lenght

Front 35

How many times the diameter of a wire rope should the diameter of the sheave be on a wire rope block?

Back 35

20

Front 36

What is the block called that is located at the base of the boom?

Back 36

Head

Front 37

What is the name of the small single-sheave block located in the middle of the booms?

Back 37

Slack-Wire

Front 38

How often should you inventory all blocks on board your ship?

Back 38

Quarterly

Front 39

What combination of blocks is used to make up a gun tackle?

Back 39

Two Single Blocks

Front 40

What type of tackle is made up by using one treble block and one double block?

Back 40

Double luff Tackle

Front 41

What advantage does the right-angle method of reeving a threefold purchase have over the parallel method?

Back 41

It reduces the chance of chafing

Front 42

What factor determines the mechanical advantage of a simple tackle?

Back 42

The number of parts of the falls at the moveable block

Front 43

What is the mechanical advantage of a single luff tackle?

Back 43

3 to 1

Front 44

Taking friction into consideration when using a single luff tackle, you can lift a 300-pound load by applying a force of

Back 44

130 lbs

Front 45

What is the safety factor that must be applied for a fiber line that is to be used in a critical working application?

Back 45

10

Front 46

To find the size of line to use for lifting any given weight, what must you do first?

Back 46

Identify the type and construction of the line

Front 47

When using the breaking strength tables in figuring the safe working load of a line, what should you do if the breaking strength is between sizes?

Back 47

Go to the next larger size line

Front 48

Which of the following is the weakest part of a chain hoist?

Back 48

Lower Hook

Front 49

What should you do if you find warped links on the chain of a chain hoist?

Back 49

Have the hoist surveyed

Front 50

Which of the following statements best identifies the classes of shackles available in the Navy?

Back 50

Round pin, screw pin, safety bolt and nut

Front 51

A sure sign that a fiber rope block has been overloaded is when

Back 51

The pin is bent

Front 52

Which of the following coatings should be used as a protective coating on wooden blocks?

Back 52

Varnish

Front 53

The last step you perform in disassembling a roller bearing block is to remove the

Back 53

bearings

Front 54

To hoist aboard a pile of Douglas fir measuring 16 feet by 8 feet by 10 feet, approximately how many crane loads will you need if your crane capacity is 6 tons?

Back 54

a

Front 55

What is the area of a triangle that has a 6-foot base and is 8 feet tall?

Back 55

24 sq ft

Front 56

What is the area of a circle having a 10-foot diameter?

Back 56

78.54 sq ft

Front 57

What is the area of the side of an oil drum that is 2 feet in diameter and 4 feet tall?

Back 57

a

Front 58

Which of the following is the formula for the area of a cone?

Back 58

A=1/2 ShxC

Front 59

The volume of a sphere having a diameter of 6 feet is

Back 59

a