OIC – ENGINE

REPUBLIC OF THE PHILIPPINES DEPARTMENT OF TRANSPORTATION MARITIME INDUSTRY AUTHORITY STCW OFFICE

GUIDE QUESTIONNAIRES for seafarers

The Annual Publication of Database of Questionnaires is mandated in Republic Act 10635 or the Act Establishing the Maritime Industry Authority (MARINA) as the Single Maritime Administration Responsible for the Implementation and Enforcement of the 1978 International Convention on Standards of Training, Certification and Watchkeeping for Seafarers, 1978, as amended and International Agreements or Covenants related thereto and its Implementing Rules and Regulations.

These sample questions have been reviewed and validated by our respective Board of Examiners which may serve as a guide for the review of aspiring Marine Deck and Engineering Officers, towards the successful completion of the Theoretical Examination.

The following sample questions do not reflect the actual set of database of questions given during the theoretical examination. Examinees are encouraged to study the contained sample questions and probable answers as they are intended to give an indication of the format and difficulty level of the theoretical examination.

You may access these guide questionnaires with your smart gadgets anywhere and anytime at your convenience. Please consider the environment before printing.

Thank you.

A Publication of the MARINA STCW Office OIC - EW: COMPETENCE 3 - Use internal communication systems

No. Questions Choice A Choice B Choice C Choice D A polarization of a radio wave is determined by height of the length of the position of the width of the 1 a: aerial aerial aerial aerial

A radio-wave travels in the air at a speed of: 300.000 meters 300.000 300.000 per 300.000 meters per second kilometers per kilometers per per minute 2 second hour

A VHF transmission range is mainly determined the moment of the right position the height of the length of the by: propagation of the squelch- aerial aerial 3 adjustment

A VHF transmission range is mainly restricted the curvature of reflection by the the length of the atmospheric by: the surface of ionosphere aerial condition 4 the earth

A wire aerial for an MF/HF –transmitter must be to prevent to prevent burns to make the way the battery is low suspended between isolators: contact with when touching for aerial 5 earth the aerial currents as long as possible According to the “Regulation and Restrictions” of may be taken off may only be apart from its None of the the mariphone license, the mariphone: the ship present at the position as above temporarily, only place, as indicated also if suitable indicated in the be used in other measures are license places provided taken for the its call sign is at 6 prevention of the least transmitted use of the once at the start mariphone and at the end of each transmission

Acoustic feedback can arise: because the because outside because the because the loudspeaker noise is volume battery is strong works as a amplified by the adjustment of 7 microphone loudspeaker in the speaker is the microphone too high

All ships with periodically unattended machinery engineer's accommodation personnel alarm All of the above plants shall, in addition to the general alarm assistance- space required by Coast Guard Regulations (46 CFR), needed alarm communication 8 be provided with a/an : system Automatic amplifier regulation is used for the in absence of with weak with varying All of the above following reasons: incoming signals incoming signals incoming signals the noise is distortion is the variation in reduced reduced the out going 9 signal is as small as possible

Automatic amplifier regulation is used to: reduce noise if reduce distortion reduce distortion increase there is no of the strong of weak incoming signal signal incoming signal incoming signals 10

Before a mariphone is installed on board: a letter of contribution a license must the ship must registration must must be paid be issued pass the port 11 be applied for state control inspection

By DUAL WATCH in maritime VHF- automatic the possibility to to keep a None of the communication is understood: reduction of keep radio- listening watch above transmitting contact with two on two channels 12 power or more stations more or less simultaneously simultaneously

By frequency is meant: number of time lapse of number of Any of the vibrations vibrations. vibrations per above 13 unit of time

By non-reduced transmitting power in VHF is 1 – 6 watt 5 – 10 watt 6 – 25 watt 25 – 50 watt 14 meant in a power between: By the degree of selectivity of a receiver is ability to make ability to ability to make ability to meant: weak stations distinguish weak strong station distinguish audible stations from audible strong stations 15 adjacent from weak stronger stations stations

By wave length is understood: the distance the propagation the propagation the propagation travelled by a speed of a radio direction of a of wave signal 16 radio vibration in vibration in free radio vibration a period space

Calls, announcement and conversations from Intelligibility clarity understandabilit loudness one station to another on board should be as y 17 brief as possible and consistent with ______.

Channel 70 for digital selective calling for 158.526 MHz 157.526 MHz 156.526 MHz 159.526 MHz Distress, Safety and Calling frequency operate 18 at:

Due to the volume of traffic on the radio, you are Key the Broadcast Broadcast Broadcast unable to communicate with the vessel in microphone "Seelonce" "Seelonce "Charlie Quebec 19 distress. What action should you take? three times in immediately Distress" Mayday" quick succession For the connection between VHF and antenna a three vein a coax cable of a copper wire of an arbitrary coax must be used: cable with earth- proper sufficient cable 20 connection impedance diameter to minimize loses For the VHF-antenna connection is used: an arbitrary coax a 50-ohm a properly a coax cable of cable resistance coax insulated copper proper 21 cable wire of sufficient impedance diameter

How should the letter "D" be pronounced when DUKE DA VID DONKEY DELL TAH 22 spoken on the radiotelephone?

In daytime, as a result of sunlight, the number of increase decrease not change vanish 23 layers of ionization will:

In making VHF communication or test first tap on the identify yourself with DSC use, All of the above transmission you must: mike several with your call first broadcast times, but not sign and /or the carrier wave 24 more than ten ships name for at least three times seconds

In maritime communication two international Solas and its Solas and the The IMO at Both treaties are primarily involved. They are: rules international London and the international and treaty of far ITU at Geneva local rules 25 messaging

In maritime radio-communication by “low power” 0.5 – 1.0 watt 1.0 – 1.5 watt O.5 watt 2.0 - 2.5 watt given by a nautical phone is meant a transmitting maximum 26 power of: In radiotelephone communications, the prefix the message the message a ship is a calling station PAN indicates: following the following is a threatened by has an urgent prefix will be meteorological grave and message about 27 about the safety warning imminent danger the safety of a of navigation and requests person assistance

In radio-telex distress traffic preference is given Direct telex ARQ ISS IRS 28 to:

In shore-ship use, what is useful range of VHF? About 30-70 About 40-70 About 30-70 About 50-70 miles "Line of miles "Line of miles "Line of miles "Line of 29 sight" sight" sight" sight"

In subjecting a metal to an axial pull, its strength main haul breaking elasticity 30 ______can be found. strength

International NAVTEX service means the 518 KHz 2182 KHz 518 MHz 500 MHz coordinated broadcast and automatic reception 31 on______of maritime safety information by means of narrow-band direct-printing telegraphy using the English language.

Long distance communication in the HF-bands ionization layers ground wave satellites dimmer setting 32 depends on:

Modulation is ______: detecting blending LF & to enhance the controlling the frequencies HF signals side bands in wave signal 33 relation to the carrier wave Moored in a harbour, transmitting with a allowed in not allowed always allowed sometimes mariphone is ______. consultation with allowed 34 the harbour- master What does MUF stand for? highest possible highest possible most effective mega/ultra high frequency that frequency that frequency , to frequency will be reflected can be made make a 35 by the with an HF- connection with ionosphere transmitter on an HF- board transmitter

Of the AM-signal ______. amplitude and amplitude is both amplitude amplitude frequency of the variable and and frequency of modulation 36 carrier wave are frequency of the carrier wave constant carrier wave is are variable constant On board an accident happened. Urgent radio- routine safety urgency security medical advice is needed. We choose the 37 category ______.

On which frequency are navigational and 518KHZ 2182KHz 214KHz 216KHz meteorological messages normally sent on the 38 NAVTEX system?

One wishes to have a telephone conversation a personal call a collect call a direct call a private call with a person whose name is known. This is 39 what is called ______. Pledge of secrecy applies ______: for everybody only for those only to for Management who want to certificate Level officers 40 send and/or holders only receive a message Polarization of a radio wave means the direction of the beam-angle the propagation transmission of 41 ______: the electrical of a transmitting speed of the radio wave field aerial signal

Radio signals in the HF channels propagate through hops between the along the in the mainly: between the earth and curvature of the ionosphere 42 ionized layers satellites earth and the earth

Radio waves used in satellite communication are the frequency of a disc aerial is TDM-signals are the frequency of not affected by ionosphere because the radio waves used used the radio waves 43 ______. is to high is to very high

Regulations require that any tankship making a means of fire pump relief watertight door emergency voyage of over a 48 hour duration' must have communication valve to the shaft alley lighting system certain tests conducted not more than 12 hours between the 44 prior to leaving port. Meeting this requirement bridge and includes the testing of the: engine room

Squelch mode serves to suppress: background noise in noise in speech- noise in noise in absence of an breaks in an transmission 45 receiving a weak FM-signal SSB-signal FM-signal

The legal type VHF-antenna has a length of: 7 meters 3.5 meters 1 meter 10 meters 46 The “squelch” adjustment on the front panel of a adjust the noise limit the noise of adjust the None of the mariphone serves to ______: threshold of the the mariphone transmitting above 47 mariphone transmitter power of the receiver mariphone The button or switch “dimmer” of a mariphone to suppress the to regulate the to regulate the All of the above serves: noise light transmitting 48 power

The call sign of a vessel is meant to: be able to provide the gain a quicker gain recognition identify oneself certificate holder transit at bridges 49 with unique and locks identification

The carrier frequency is also given as suppressed carrier frequency assigned frequency 50 ______. frequency frequency identity

The HF-band is in the frequency range 3 - 30 kHz 3 - 30 MHz 3 - 30 GHz 3 - 30 THz 51 ______:

The holder of ship low power radiotelephone F4 emissions A1 emissions A3 of F2 A3 or F3 52 operator's permit is authorized to operate emissions emissions equipment or station using: The ID of an Inmarsat M station on board starts 1 3 5 7 53 with:

The maritime radio system consisting of a series NAVTEX NAVAREA SAFESEA HYDROLANT/H 54 of coast stations transmitting coastal warnings is YDROPAC called: The maximum range of a VHF radio-set from 2 Nautical Miles 20 Nautical 200 Nautical 100 Nautical 55 ship to ship at sea is ______: Miles Miles Miles

The MF-band is in the frequency range 30 - 300 kHz 300 - 3000 kHz 3 - 30 MHz 3 - 30 THz 56 ______:

The obligation to identify oneself when using only when only when always only when VHF is ______: sailing in a block navigating by navigating in a 57 area radar heavily congested areas

The portable walkie talkies required to be carried Channels 6, 13 Channel 16 only Channels 13 & Channels 6 & 16 by GMDSS regulations should have which & 16 16 58 channels as a minimum?

The prescribed test of an approved portable week month year day VHF radio set (portophone) must be done once 59 a ______.

The presence of a VHF-installation is primarily take part in enhance the take part in take part in all intended to: harbour traffic safety of lives at public traffic traffic 60 sea

The propagation of radio-signals in the VHF- almost dependent on dependent on dependent on band is: rectilinear the power the hour of the weather 61 emitted and the transmission condition temperature of (day or night) the atmosphere The recommended connection between antenna coax cable three vein cable band cable cable 62 and VHF is: connection

The responsibility for the transmitting equipment ship owner master user of the charterer 63 lies with the: installation

The rule for having a radio transmitter license is Radio SOLAS Search and Association of 64 internationally laid down in ______: Regulations rescue treaty of Radio Users Hamburg

The sound-level of the speaker on e.g. an AF-Gain RF-Gain can not be AM-Gain 65 MF/HF radiotelephony installation is adjusted adjusted with ______.

The squelch on a mariphone serves to suppress to suppress to increase or to adjust volume ______: noise background decrease the noise in the transmission 66 wheelhouse range when transmitting

The squelch on the control panel of a VHF-sat adjust the adjust the sound to suppress to suppress serves to: threshold level level of the noise background for admitting signal received noise in the 67 signals and wheelhouse refusing noise when transmitting

The transmitting power of the mariphone is dual watch squelch high/low power volume 68 adjusted by setting ______: The transmitting range of an HF transmitter is the transmitting the height of the the time of day atmospheric mainly determined by ______: power transmitting in relation to condition 69 antenna propagation

The type-indication of the radio set is mentioned the survey of the equipment the safety radio license in ______: equipment appendix certificate 70

The typical “daylight-frequencies” for long 16 or 22 MHz- 4 or 6 MHz-band 8 or 12 MHz- 24 - 26 MHz- distance transmission are located in the: band band band 71

The VHF radiotelephone calling/safety/distress 156.6 MHz 156.7 MHz 156.65 MHz 156.8 MHz frequency is: (channel 12) (channel 14) (channel 13) (channel 16) 72

The VHF radiotelephone frequency for Channel 156.65 MHz 156.70 MHz 156.75 MHz 156.80 MHz 13 is: 73

The VHF radiotelephone frequency for Channel 156.8 MHz 156.7 MHz 156.75 MHz 156.80 MHz 74 14 is:

The VHF radiotelephone frequency for Channel 156.0 MHz 156.7 MHz 156.75 MHz 156.8 MHz 75 15 is:

The VHF radiotelephone frequency for Channel 156.0 MHz 156.75 MHz 156.8 MHz 156.85 MHz 76 16 is:

The VHF-band is in the frequency range 30 - 300 kHz 30 - 300 MHz 30 - 300 GHz 3 - 30 THz 77 ______: The volume button of a mariphone controls the volume the transmitting the squelch the clarity of ______: power transmission 78

The wave length is ______. proportional to inversely independent of direction of the frequency proportional to the frequency frequency 79 the frequency

The wave length of a radio signal in the ether is frequency weather propagation wave speed mainly determined by ______. conditions speed 80

The wavelength of a radio-signal reflected 15 cm 1.5 m 15 m 1.5 cm against the F-layer may be ______: 81

To choose the HF-band, the time difference irrelevant is hardly is important negligible between 2 stations is ______. relevant 82

To make a “call-request” one should select the telex select the telex select the ID of select the telex ______: in off-line in on-line the NCS in stand-by 83 position position position

Via a coast-station radio medical advice is asked pan + 38 + 42 + 52 + using NBDP. What command has to be given 84 after ga+?

What do you call the communication within the Internal Give the vessel Shore to ship Shipboard ship's emergency organization or communication communication a wide berth as communication communication 85 within the shore emergency response team? she is carrying dangerous goods What is the calling and distress frequency on a 1492 kHz 1892 kHz 2082 kHz 2182 kHz single side band (SSB) marine radiotelephone? 86

What is the main purpose of a radio transmitting to enhance the safe navigation public traffic all traffic installation onboard ______: safety of lives at and internal 87 sea communication

What is the minimum number of portable two 3 sets 2 sets 1 set There is no way VHF walkie talkies for use in survival craft, requirement to 88 that should be carried onboard vessels which carry them. comply with GMDSS regulations?

What is the minimum number of portable two 3 sets 2 sets 4 sets 5 sets way VHF walkie talkies for use in survival craft, 89 that should be carried onboard vessels which comply with GMDSS regulations?

What is the recommended connection between band cable three vein cable coax cable single vein cable antenna and VHF? connection connection connection connection 90

What is the secondary purpose of a radio To take part in To enhance the To communicate To stand by for installation onboard? public traffic safety of lives at in distress cases navigational 91 sea warning

What is understood by assigned frequency? frequency of the the upper side the frequency Between high carrier wave band (USB) actually used by and low 92 transmitter and frequency receiver What is/are the content of table #1 of Nature of Phonetic Position in code All of the above radiotelephony procedures? distress in code alphabets and from the 93 from the figure spelling International International code of signals code of signals What is/are the content of table #2 of Nature of Phonetic Position in code All of the above radiotelephony procedures? distress in code alphabets and from the from the figure spelling International 94 International code of signals code of signals

What is/are the content of table #3 of Nature of Phonetic Position in code All of the above radiotelephony procedures? distress in code alphabets and from the from the figure spelling International 95 International code of signals code of signals

What should you include in the body of a radio the name and The patient's The patient's All of the above message seeking advice for a medical owner of the name and next age, sex, nature emergency at sea? ship, its position of kin of the and destination emergency, 96 pulse and length of illness, treatment given and diagnosis

What statement is correct with frequency Between high the frequency is frequency the amplitude modulation? and low constant modulation is fluctuating an LF- frequency often applied in rhythm 97 the maritime VHF-range (band) When a licensed mariphone is replaced the old nothing should the seller must None of the ______: mariphone must be done, for a check in the set above be checked out license was at the authority and the new one already issued concerned 98 must be checked in

When modulating the amplitude ______: the amplitude is the carrier wave the LF-vibration the frequency is 99 modulated is modulated is modulated modulated

When onboard channel 16 is used for a shore semi-duplex duplex simplex triplex radio-connection, you always work: 100

Which equipment must be tested NOT more Steering gear Emergency All internal All of the above than 12 hours prior to getting underway from a generator vessel control 101 U.S. port when the voyage is to be of 48 hours communications or greater duration? systems

Which of the following types/sizes of vessels in Cargo ships Passenger ships Passenger ships Cargo ships of international trade do not have to be fitted with a below 300 tons of less than 100 carrying less 300 - 1600 tons 102 radiotelephone station? gross tons gross than 36 gross passengers Which one of the following requirements While at sea the The There shall be An instruction regarding radio telephone stations do not installation shall radiotelephone an efficient card giving a correspond to present regulations? be maintained in station shall be communication clear summary a satisfactory located in the between the of the distress condition upper part of the radio station and procedure shall ship, sheltered the bridge be displayed at 103 to the greatest the operators extent from position noise impairing reception of messages/signal s

Which one of the listed entries in the radio log the condition the time when a the time at details of for radiotelephone station do not correspond to and results of listening watch which a listening maintenance of present regulations? Entries in the radio log shall tests of the main begins watch is batteries, include ______. radiotelegraph discontinued, including a installation and the reason record of charging 104

Which one of the listed requirements regarding Transmitter and The apparatus The apparatus New equipment portable radio apparatus for survival crafts do receiver to be shall be capable shall be readily shall be as light- not correspond to present regulations? tested with of being portable and weight and 105 intervals of not dropped into the watertight compact as more than one water without practicable month damage Which one of the listed requirements regarding The installation The main The reserve A main and a radiotelegraph installations do not correspond to shall include installation shall installation shall reserve antenna present regulations? equipment for include a main include a shall be installed radiotelephone receiver, a main reserve communication transmitter, transmitter, a 106 on distress radiotelephone reserve receiver frequencies in distress and a reserve addition to frequency watch source of energy working receiver and frequencies main source of energy Which one of the listed requirements regarding direct access to spare parts, either an electric a reliable clock radiotelegraph stations do not correspond to the navigating tools and testing inspection lamp with a dial not present regulations? A radiotelegraph station bridge equipment or a flashlight less than 12,5 107 shall be provided with ______. cm diameter, and marked to indicate silence periods Which one of the listed requirements regarding in presence of as far as be capable of be capable of radiotelephone auto alarm do not correspond to atmospheric or practicable give withstanding withstanding present regulations? Automatic receiving interfering warning of faults vibration, variations in equipment shall ______. signals preventing the humidity and power supply 108 automatically apparatus from temperature voltages, and adjust itself performing changes shall continue to normal functions operate under such conditions Which one of the listed requirements regarding The apparatus While at sea, The apparatus When necessary two-way radiotelephone apparatus for survival shall be capable the equipment shall be the battery shall crafts do not correspond to present regulations? of being shall be operated from a be brought to operated on maintained in battery of the fully charged 109 VHF channel 16 satisfactory adequate position or condition capacity to changed ensure operation for at Which one of the listed requirements regarding Cargo ships of Controls for the Facilities should As far as VHF radiotelephone installations do not less than 500 channels be available to practicable, the correspond to present regulations? tons gross shall required for permit radio antenna shall have the navigational communication have 110 batteries located safety shall be from the wings unobstructed in the upper part immediately of the bridge view in all of the ship available on the directions navigating bridge, Which radio frequency/channels are reserved for 2182 kHz/VHF 2128convenient kHz/VHF to 2812 kHz/VHF 2812 kHz/VHF emergency communication? channel 16 channel 16 channel 17 channel 12 111

Which radio frequency/channels are reserved for 2182 kHz/VHF A message of 2182 kHz/VHF 2188 kHz/VHF emergency communications? channel 16 an urgent nature channel 6 channel 8 about the safety 112 of a ship will follow Which VHF channel should be used for Ch. 13 Change course Ch. 12 Ch. 06 internship navigation safety communications? to keep clear of the vessel 113 because she is maneuvering with difficulty

Which wave length applies to a frequency of 150 20 cm 50 cm 200 cm 500 cm MHz? 114

Which wave length applies to a frequency of 150 meters 15 meters 1500 meters 200 meter 2000 kHz? 115

Wire antenna of 12 meters long is probably A MF/HF- A MF-antenna An Inmarsat- An HF-antenna ______. antenna antenna 116

With a distress alert via an Inmarsat-A terminal it All vessels in the Wait three The telephone is Any of the is recommended to use the telex-mode because: Ocean Region minutes and if slower and more above concerned can no prone to 117 read it acknowledgeme interference nt is heard from a coast station you should relay the alert With an Inmarsat-C terminal the option “PSTN” To have the Desire to To deliver a Any of the for addressing is available. This option: operator read communicate by message by above the message by radio telephone via a 118 phone modem on the computer of the subscriber With the DCS format specified geographical Westerly and An updated Easterly and Southerly and area call besides a reference position the northerly copy of the “Wet northerly easterly number of the full degree difference in longitude direction op de direction direction 119 and latitude must be fed in: telecomuniactiev oorzieningen”

With the squelch mode on the VHF: Undesirable Ch. 16 Range is Range is noises is increased constant suppressed 120

With the squelch mode on the VHF: range is another channel undesirable range is fixed increased is chosen noise is suppressed 121

With the VHF on board there has to be: A license Another channel A document None of the is chosen showing that the above radio equipment 122 has been firm or person Within territorial waters the use of transmitters is VHF-equipment MF-equipment HF-equipment All of the above prohibited. In general this does not apply for 123 ______:

Within territorial waters the use of transmitters is Inmarsat-C Relay the HF-equipment All of the above prohibited. In general this does not apply for: equipment message immediately on 124 2182 kHz

You are approaching another vessel and see her Attempt to call Delivers a Stop your vessel Continue on signal flag “F” hoisted. What should you do? the vessel on message as a instantly your vessel VHF telegram course since the 125 radiotelephone vessels is because she is signaling for pilot disabled

You are making ship-to-shore telephone calls on VHF-FM service External Coastal harbor High seas VHF. You should use the: service service

126

You are underway and hear a vessel Is in distress Emergency Desires a pilot Is aground continuously sounding her fog whistle. This broadcast indicates the Other vessel: services 127 You hear on radiotelephone the word A message A VHS-antenna The sender is in You should “SECURITE” spoken three times. This indicated about the safety distress and secure your that of navigation will requests radiotelephone 128 follow immediate assistance

You received a distress alert on HF Radio. What Wait three The telephone No response is Acknowledge should you do? minutes and if can cause necessary receipt no misunderstandin providing the acknowledgeme g through vessel is more 129 nt is heard from language than 24 hours a coast station problems or away you should relay wrong the alert interpretations

You want to send a DSC distress alert via the 8 MHz band 12 MHz band 16 MHz band 18 MHz band 130 HF-band. You prefer the: