To performed by:Phm Trung KinNguyn Vn TrungTrn T RngTrn Quc TrungNguyn Thanh BnhV c Huy

Introduce about Radio communications at sea Communication between ship to land stationCommunication between ship to another ship.

GPS(Global Positioning System)Morse codeVHF(Very High Frequency)

Dash (n):nt gch ngang, s va chm, s xng ti Represent : miu t,hnh dung,trnh byArrangement (n) :s sp xp,sp tSource (n) : ngun,gc,im bt u.Mechanical (adj) : thuc v my mc,c hcMedical (adj) :thuc v y hcGuidance (n) : s ch o,hng dnUnfamiliar (adj) : xa l, ko bit rWing: mn ,cnh, bin

Privacy (n) ; s kn o,ring bitDistress (n) :tai ha, tnh cnh nguy himPermanent (adj) : thng xuyn, thng trcBriefing (n) :ch th, li ch dnHail (n) :li gi, li ch dn Bulletin (n) : bn tinAdvisory (adj): c vn, t vnCharter (n) : hin chng ,thuObtain (v) : t c ,vn s dng

GMDSS: Global Maritime Distress Safety Systerm. DSC: Digital Selective Calling. UTC: Universal Time Coordinated Announcement: ['naunsmnt]: cao thi; thng cao Annouce(v) ['nauns]: Bo, gii thiu. Casualty(n) ['kjulti]:bi thng do tai nan; thng vong Abandon ['bndn]: ngoai ng t; t bo; bo ri, rung bo.civilian : thng dn

The Global Positioning System (GPS) is a global navigation satellite system (GNSS) developed by the United States Department of Defense and managed by the United States Air Force 50th Space Wing. It is the only fully functional GNSS in the world, can be used freely, and is often used by civilians for navigation purposes. It uses a constellation of between 24 and 32 Medium Earth Orbit satellites that transmit precise microwave signals, which allow GPS receivers to determine their current location, the time, and their velocity. Its official name is NAVSTAR GPS. Although NAVSTAR is not an acronym,[1] a few backronyms have been created for it.[2]

What do all those dots and dashes mean? The invention of the telegraph was followed by the invention of the Morse code. Referred to in the Navy as the dot-dash system, each letter and number is represented by a particular arrangement of dots and dashes. Morse code is usable in sound signaling (radio, sound and whistle) and visual signaling (lights and flags).

LetterCodeLetterCodeNumberCodeA.-N-.0-----B-...O---1.----C-.-.P.--.2..---D-..Q--.-3...--E.R.-.4....-F..-.S...5.....G--.T-6-....H....U..-7--...I..V...-8---..J.---W.--9----.K-.-X-..-L.-..Y-.--M--Z--..

What is the VHF for?:Only vessels over 65-1/2 feet are required by the Coast Guard to carry a VHF, but most sailboats today carry a VHF, and certainly ALL charter boats. The VHF is:A very important information and safety equipment to have aboard. It is essential for communicating with other boats or water facilities. Your best source for weather bulletins and marine advisories. In the Bahamas for example, the useful Cruisers Net has created a very valuable network for cruisers and charterers alike, using only the VHF.

Your best safety line to get help, from the charter base or else, should you have any kind of emergency, whether mechanical or medical. It can also be a way to obtain navigational guidance if you're unfamiliar with a particular area. A tool to make telephone calls to shore. In the Virgin Islands for example, call VI Radio on ch.16 and ask them to place a phone call for you. When they have the party on the phone, they will connect you via the VHF which you will use as a phone. However remember that the conversations from a VHF to a land phone can be heard by anyone listening to the channel you're on. So no privacy here!

A cheap entertainment tool: just listen to it in some Caribbean islands and I guarantee you some hilarious or dramatic moments! However, it is much less laughable when some idiot out there is misusing the VHF when, at same time, an important weather bulletin announcement is missed.

How to Use VHF:Standby:In general, you should stay on standby on Channel 16 at all times. The US Coast Guard monitors 16 for distress calls, and also to broadcast storm warnings and other crucial marine information or warnings. And by the way, when the VHF is turned on, it will tune automatically to Ch.16. Remember: Ch. 16 is the international calling and distress frequency, and it should be used essentially for that purpose. Usually, charter companies have a permanent working channel, which they use to communicate with charterers without having to call on ch. 16. Ask instructions at the skippers briefing before the start of your cruise.

Hailing (or Raising):Other than being in standby, Channel 16 is for hailing and distress purposes only, which in some areas, seems to be a long-forgotten rule! So make your initial hailing call clear and short!The correct hailing procedure is to state one to three times in succession the name of the boat or station you are calling, followed once or twice by the name of your boat, then "Over." Any additional words are unnecessary and incorrect procedure. Once your party replies, you instruct him/her to switch to a working channel and clear out of channel 16.Example: Vessel Moondance: "Windstar, Windstar, Windstar ... this is Moondance"

Sending a Distress Call:You may only have a very short time to send a distress call. Here is the procedure in this order: Tune your VHF to channel 16. Repeat the word "MAYDAY," three times. "This is (name of boat )" Repeat boat name three times.

Describe your boat, such as, size, rig type, color and tell the number of persons aboard.

Indicate the nature of distress (sinking, fire, etc.)

Give position by latitude and longitude or by bearing and distance to a well-known landmark or navigational aid, or in any terms that will assist a responding station in locating the vessel in distress. Include any information, such as, vessel course, speed, and destination.

Indicate the kind of assistance desired.

End with "over."

If you do not receive any answer, repeat your call every 2 minutes.

Hearing a Distress Call:When you hear one, give first the Coast Guard or the local equivalent a chance to respond. If they do not, and if you are in position to help, answer the distress call, get the details of the emergency and figure out what to do. If they do respond or if you're not in position to help, just listen and do NOT press your mike button.

Ships radio-room.

RCC. DISTRESS ALERT: Urgent! There is serious and immediate danger.. URGENCY MESSAGE: Urgent! There is serious danger!. SAFETY MESSAGE: Imminent risk for navigation. . ROUTINE MESSAGE: to ensure safe navigation.

s MAYDAY - 3 X This is Vincente - PWCA Vincente - PWCA Vincente - PWCA:

MAYDAY: This is two three five - seven eight six - zero zero zero Pearl Head - Victor Romeo Sierra Echo. My position: three eight degrees one zero minutes North / zero one eight degrees one zero minutes East.I am on fire: fire is in engine room and number-two hold. Vessel is sinking. Crew must abandon vessel. I require assistance. Number of crew on board: one eight; number of injured persons: eight; number of casualties: two. Over.

s PAN PAN - 3 X All stations - 3 X This is Alcona - BUCE Alcona - BUCE Alcona - BUCE:.

sPAN PAN, PAN PAN, PAN PAN;All stations, all stations, all stations;this is 211 868 000 MV Christina;my posn. 56 degr. 29 min. N / 000 degr. 53 min. E.I am manoeuvring with difficulty;I have problems with main engine;I require tug assistance;advice: all ships keep clear OVER.

s SECURITE - 3 X All stations - 3 X This is Anticosti - V8SH Anticosti - V8SH Anticosti - V8SH:.

sSecurite, securite, securite; all stations, all stations, all stations;this is 426 477 000 - tanker Vermont - CAPK in posn. bearing 259 degr. from Falls Light, distance 1.5 miles; time: August 6 - 1645 UTC. Information: Buoy FL-1 in position 259 degrees from Falls Light, distance 2 miles, missing. OUT

Intership communicationand communication between ship and coastal station is announced on VHF. VTS Halifax RadioM.V. Anticosti - V8SHAnnouncement (by non-GMDSS vessels).

VTSIntership communicationand communication between ship and coastal station is announced through Digital Selective Calling.When the DSC-acknowledgement has been received, communication by VHF will begin.DSC-announcement (GMDSS - vessels).

REMEMBER:

AlwaysADDRESS AND IDENTIFY after you have heard the wordOVER.

Now listen to the conversations between the VTS Station to Vessel on VHF

SOUNDSOUNDAddress & Identify.Address & Identify.PORTISHEAD RADIOM.V. STELLA MARIS - UB6379

SOUNDSOUNDPORTISHEAD RADIOM.V. STELLA MARIS - UB6379Stella Maris is not following traffic regulations; she is not in the correct traffic lane . Stella Maris must alter course to 064 degr.Stella Maris confirms and closes.

Maas ApproachDiamond StarVYNGAddress & Identify

Maas Approach wants to know - Diamond Stars present position, course and speed; - her ETA in position of no. 1 Euro Buoy;- her draft fore and aft;- her freeboard and airdraft. Diamond Star VYNGMaas ApproachHer position is bearing 045 degrees from no. 1 Euro Buoy at a distance of 12 miles,course 052 degrees true at 7 knots;ETA no. 1 Euro Buoy is 1145 hrs. UTC;draft fore: 5m - draft aft: 6 m.freeboard of 5.5 metres;airdraft of 18.5 metres.

Diamond Star confirms.Maas ApproachMaas Approach now indicates thatDiamond Star may enter traffic lane at 1245 hrs. UTC;Maas Approach warns for a heavy swell in the fairway;Diamond Star must maintain present course and reduce her speed to 4 knots.Vessel astern is going toovertake her to the West. Diamond Star VYNG

Maas Approach reports that Diamond Stars berth is ready and that she will berth at 1300 hrs. UTC.Request to remain stand by on channel 13.Maas ApproachDiamond Star confirms. Diamond Star VYNG

Unknown vessel(Great Yarmouth Princess - GBCH) in posn. 052 degr. from Bondpier -0.5 miles Seaborne - IRSLAddress & Identify on VHF: - acknowledges.

Message on ch.6.

Seaborne is going toovertake Great Yarmouth Princess on her port side -course: 250 degr.;speed: 8 knots.Great Yarmouth Princess confirms and closes.Seaborne - IRSL

The End.

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