Additional notes (chapter 27 – 30)

FOR MCA ORAL EXAMINATIONS

Topics and links :

Table of Contents :

Chapter 29 : | hot work permit |

27.

Foul Anchor.

a. Anchor Fouled By Under Water Obstruction.

· Vessel Is Moved Ahead Under Engines, Veering Cables Until It Grows Well Astern.

· When The Vessel Is Brought Upto With The Cable Growing Astern, And The Cable Is Taut, Then Work The Engines Ahead Slowly And See If The Cable Breaks Out Slowly.

· In Case It Doesnot Break Out Then Steer The Vessel Slowly In An Arc Towards The Anchor And Try To Rotate The Anchor And Break It Out By Constant Movement.

· If Still Unsuccessful Then Try The Above Procedures Using Astern Movements.

· If Still Not Successful Then Rig Up An Anchor Buoy And Slip Cable For Later Recovery.

a. Anchor Fouled With Wire Cable Etc.

· Anchor And Fouling To Be Hove Well Up Into The Hawse Pipe.

· Use A Fiber Rope And Pass It Round The Obstruction And Heave Both Ends Taut And Make Fast On The Forecastle Deck Near Maximum Flare.

· Walk Back Anchor Clears Of Obstruction.

· Heave The Anchor Into The Hawse Pipe.

· The Obstruction Which Is Now Clear Of The Anchor Can Be Released By Slipping The Fiber Rope.

a. Foul Hawse:

· Gear Necessary For This Operation Should Be Made Ready For Slack Water.

· It Will Include At least Three 20 / 25 Mm Wires, Lashing Wires Or Ropes, Boatswains Chair And Equipment Necessary For Breaking A Cable To A New Stream Thus Giving About 6 Hours Of Freedom.

· The Hawse Is Clear By Unshackling The Sleeping Cable And Passing The End Round The Riding Cable.

Procedure:

1. Heave On Both Cables To Bring The Foul Turns Above Water And Lash Both Cables Together Below The Turns With A Natural Fiber Lashing.

2. This Lashing Will Prevent The Turns From Working Themselves Further Down The Cables.

3. Pass A Wire Preventer (25mm Wire) Around The Sleeping Cable Down From The Turns This Will Reduce The Weight On The Turns And Serve To Secure The Sleeping Cable Should The End Be Lost.

4. Walk Back On The Sleeping Cable To Bring The Next Joining Shackle Convienently Forward Of The Windlass.

5. Rig A Temporary Easing Wire (25mm Wire) At A Point Forward Of The Joining Shackle So That It Can Take The Weight Of The Sleeping Cable When The Joining Shackle Is Broken.

6. Run A Wire Rope Messenger (25mm Wire) From The Windlass Drum To Outside. Take Half A Turn About The Riding Cable In The Direction Opposite To The Foul Turns In The Cable With This Messanger.

7. Pass The End Of The Messenger Up Through The Hawse Pipe Of The Sleeping Cable And Secure It To The End Of The Sleeping Cable.

8. Heave Away On The Messenger And Simultaneously Ease Away On The Easing Wire, Heaving The End Of The Sleeping Cable Up Towards The Fairlead Thus Removing A Half Turn From The Fouled Cables.

9. Follow The Same Procedure To Remove The Remaining Turns.

10. When We Get A Clear Hawse, Haul In The End Of The Sleeping Cable And Rejoin It.

11. The Preventer Wire Should Be Slipped And Cleared, Lashing Should Be Cut Or Burnt Away. Heave Away On Both Cables Picking Up On Any Slack.

28.

Global Maritme Distress Safety System.

Sea Areas:
In Gmdss System The World Is Divided Into Four Sea Areas.:
Area A1:
Within The Radio Telephone Coverage Area Of A Vhf Coast Station Which Has Continous Dsc Altering Avaliable.
Area A2:
Excluding Area1 But Within The Mf Radio Telephone Coverage Area Of A Coast Station Which Has Continous Dsc Altering Avaliable.
Area A3:
Excluding Area A1 &A2 &Within The Coverage Of The Inmarsat Geostationary Satellites I.E. 70degrees North To 70 Degrees South.
Area A4 :
Areas Outside A1 ,A2 ,A3.This Is Essentially The Regions North Or South Of The 70 Degrees Lines Of Latitude (Polar Regions).

Gmdss: Classes Of Emission
As Stated Above, These Are Quoted On The License. The More Commonly Used Types Of Emission Are Listed Below.
A1a - A2a – H2a: Morse Code Transmissions.(Not In Use).
F1b -J2b :Radio Telex Transmissions.
H3e :Single Upper Sideband Full Carrier Telephony-
2182 For Distress Only. Single Upper Sideband
Containing The Signal Intelligence Plus
A Carrier Frequency Of Maximum Power
Amplitude. Bandwith 3khz.
R3e :Single Upper Sideband Plus A Carrier Frequency
Of Reduced Amplitude.
J3e :Single Upper Sideband Suppressed Carrier
(Telephony-Mf/Hf Working)Power Will Be
Restricted From The Trasmitter When The
Sideband Is Present.(Bandwidth2.35 Khz)
F3e –G3e :Frequency-Phase Modulation On Vhf R/T
Frequency Of The Carrier In Accordance
With The Characteristics Of The Modulating
Signal.

E.G.C. (Enhanced Group Calling)
Sat C System Has A Capability Known As Enhanced Group Calling Which Enables Information Providers To Send Messages For Selective Reception By Egc Receivers Located In The Four Ocean Regions.
The Information Provider Determines Which Receivers Are To Receive The Message By Including Identifying Information Such As The Nav Area, Met. Area And Geographical Areas For Which The Msi Is Intended Along With The Message Individual Receivers Can Be Programmed To Use This Information To Select Only The Required Messages And To Delete All The Others.
Egc Receiver Operator To Program The Receiver With The Geographical Areas For Which The Msi Shall Be Received.
Authorized Information Providers Include Hydrographers Offices, Met Office, Rcc Etc.
1) Safety Net: For Maritime Safety Information.
2) Fleet Net: For The Transmission Of Commercial Information (Allows Registered Information Providers To Broadcast Messages To Selected Groups Of Ses.)
Egc Messages Can Be Addressed To Ships In A Particular Area Or To A Selected Group Of Ships Eg. Broadcast News Service. It Is Important Therefore That Position Information Is Supplied To Egc. Receiver Either Manually Or Through An Interface,Automatically.
The Manual Position Input Shall Have Five Co-Ordinates Needed To Complete An Enclosed Area. Eg. If A Square Has Four Corners Named A,B,C,&D With Particular Co-Ordinates Then We Need To Come Back To “A” Again To Complete An Enclosed Area For Reception. Egc Is Particularly Useful For The Reception Of Messages When The Vessel Is Out Of Range Of The Navtex Station Or The Region Doesn’t Have Navtex Facilities Eg. Australia.

E P I R B: Emergency Position Indicating Radio Beacon

Basically There Are Three Types Of Epirbs For General Use Commonly Found On Ships:

· Cospas-Sarsat Epirb.

· Inmarsat-E Epirb.

· Vhf Dsc Epirb (Ch 70 Dsc).

I. Cospas-Sarsat Epirb: The System Uses Several Satellites At A Low Earth Orbit Of 850-1000 Kms,Each Of The Satellites Making A Complete Orbit Of The Earth In About 100 Minutes.

The Satellites Are Designed To Receive On 121.5 And 406.025mhz

It Employs Dopler Shift Principles Using The Relative Motion Between The Satellite And An Activated Beacon To Calculate The Location Of The Beacon.Once The Beacon Signal Has Been Received It Is Relayed By The Satelli8te To A Specialised Ground Station Called The Local User Terminal (L U T ), And Thence To M.C.C. And M.R.C.C.

Modes Of Operation: There Are Two Modes Of Detection Of The Beacon By The System.

1. Real Time Mode: In This Type Of Mode A Repeater On Board The Satellite Relays The Epirb Signal Directly To The Ground Where It Is To Be Received And Processed By The L.U.T.

For This Mode The Lut And The Epirb Have To Be In The Footprint Of The Satellite.

2. Global Coverage Mode: The Satellite Stores The Signals Activated From The 406 Mhz Epirb, Sa The Satellites Path/Footprint Brings It In View Of A Lut. Information Including Beacon I.D. Frequency Of Detection And Time Of Detection Is Continuously Relayed Down To The L.U.T. Which After Computing The Position Of The Beacon Shall Relay The Same To The Rcc/Mrcc.

This Mode Is Only For The 406 Mhz Epirb.

Every 406 Mhz Epirb Has A Unique Identity Code Which Is A Part Of The Signal, This Code Could Be A Call-Sign,Serial Number Or A Mmsi Number. This Code Is Programmed By The Supplier Before It Is Installed On The Vessel.
It Is Imperative That The Epirb Is Registered With The Relevant Authorities In The Flag State So That Information Can Be Readily Available To The Authorities During A Cricis.
Specifications:

1. The Epirb Shall Be Placed In An Easily Accessible Position Like The Bridge-Wing Or The Compass Deck.

2. Be Capable Of Manual Release And Also Be Capable Of Being Carried To The Survival Craft By A Single Person.

3. Be Capable Of Being Floating Free From A Sinking Vessel If It Is Fitted With A H.R.U.

4. Be Capable Of Being Activated Manually.

Epirb Operation.
It Is A Small Self Containded Battery Operated Radio Trasmiter (Operation Eye 48 Hrs)Which Is Both Water Fight & Buoyant Operations Differ Between Model . However All Beacons Operate Between The Following:
Off/Safe: The Beacon Is Switched Off & Will Not Transmit.
Armed /Auto: The Beacon Will Automatically Switch On When It Is To Be Released From The Float Free Bracket (Armed Type) Or Will Activate When Itr Gets In Contact With Contact With Water As There Are Two Mettalic Contacts On The Bottom(Auto).
On : The Beacon Will Automatically Switch On And Transmit (Manual Mode.)
Test: Activates A Built In Test Routine.
The Purpose Of Epirb To Determine The Position Or The Survivors/ Distress Vessel During Sar Operationsand As Asecondary Means Of Altering. It Indicates That One Or More Persons Are In Distress May No Longer Be On Board A Ship Or Aircraft And That Receiving Facilities May Not Be Avaiiable.
2)   Inmarst ‘E’epirb Or ‘L’band Epirb:
It Utilises The Geo Stationary Satellite System. The Transmission Is Made Alternately Im Frequency Ranges From 1644.3mhz &1644.5mhz&1645.5 00 -1646.5hz In Order To Be Received From Both The First &The Following Generations Of Inmarsat Satellites.
Upon Activation The Epirb Trasmits A Distress Altert Containing The Ships Station Identity, Position Information Either Gps Or Manual &Additional Information (Nature Of Distress).They Cannot Be Used In Area A4. It Has A Inbuilt Gps.
3)   Vhf Dsc Epirb:
Is Operates On Channel 70 &Can Only Be Used In Area A1
All Vhf Dsc Epirbs Will Have An Inbuilt Sart So That It Can Reveal Its Position To The Vessels In The Area Where The Epirb Is Activated.
# When The Vhf Dsc Epirb Is Activated On The Dsc It Will Only Show Nature Of Distress As Undesignated And Further “Epirb Emission Shall Appear”

G.M.D.S.S. Frequencies.
Distress          Urgency         Safety.
D.S.C.            R.T.                 Telex.
2187.5            2182               2174.5 Khz
4207.5            4125               4177.5 Khz
6312               6215               6268 Khz
8414.5            8291               8376.5 Khz
12577             12290             12520 Khz
16804.5          16420             16695 Khz

VHF - Ch 70 (156.525 Mghz) Ch 16 (156.800)

Ii: N A V T E X.

The NAVTEX system has been allocated three broadcast frequencies;

518 kHz : the main NAVTEX channel.

490 kHz : used for broadcasts in local languages (i.e. non-English)

4209.5 kHz : allocated for NAVTEX broadcasts in tropical areas – not too popular thus far.

Iii: Maritime Safety Information (Telex).

1. 4210 Khz.

2. 6314

3. 8416.5

4. 12579

5. 16806.5

6. 19680.5

7. 22376

8. 26100.5

D.S.C. Routine Calling.

Ship–Shore 2189.5 Khz (Or National)
Ship-Ship 2177 Khz
Shore-Ship 2177 Khz (Or National)

On Scene Communications.
2182 Khz 5680 Khz*
3023 * Vhf Ch 06 *
4125 * Vhf Ch 16

· Stands For Ship Aircraft Operations.

Primary Inter Ship Frequency Is Ch 06

Channel 16 May Be Used By Aircraft Stations For Safety Purposes Only.

Vi: On Board Communications.

Vhf Ch 17 (156.850 Mhz)

Vhf Ch 15 (156.750mhz)

E P I R B S.
121.5 Mhz And 406 Mhz Cospas-Sarsat
L-Band Or 1.6 Ghz Inmarsat-E Epirb.
Vhf Ch 70 Vhf
(243 Mhz) Personal Locator Beacon.

Inter Ship Safety Navigation.
Vhf Ch 13 (156.650 Mhz)

Primary Inter Ship Vhf Frequency.
Vhf Ch 06 (156.300 Mhz)

S A R T S.
9 Ghz Radar , 3 Cm (X-Band)

G.M.D.S.S: N A V T E X.
Navtex Is An Automatic Direct Printing Service For S.A.R., Navigational/Meteorological Warnings And Urgent Information To Ships.
It Is A fine Tuned And Fully Automatic Receiver Incorporating An Audible Alarm For Priority Message Mode.
The Mode Of Transmission Is F1b Or Telex (N.B.D.P.Narrow Band Direct Printing)
The Frequency Used Primarily Is Additionally 4209.5 Khz Is Used In Tropical Regions Where There Is A High Degree Of Interference Due To Static.
The Receiver Can Also Use 490 Khz For The Receipt Of Messages In Local Languages After The Full Implementation Of Gmdss.
The Unit Consists Of A Printer, Display And Microprocessor.
The Processor Unit Allows The Foll:

1. To Receive Information From Selected Stations.

2. To Receive Certain Types Of Information Only.

3. Prevent Printing Of The Message Again.

4. Store Received Messages.

5. To Prevent Printing If Message Is Not Of Sufficient Strength Or Signal Not Good Enough.

All Navtex Messages Are Prefixed By A 4 Character Group.

1. The First Character Denotes The Transmitting Station.

2. Second Denotes Message Category.

3. Third And Fourth Are Serial Numbers For The Message Received In 4 H2ours.

4. The Serial No. 00 Denotes Urgent Traffic And Cannot Be Deleted.

The World Is Divided Into 16 Navareas Each Having Transmiting Stations From Alpha To Zulu, The Geographical Boundary Of Each Navarea And Its Station Is Given In Alrs Vol 3 / 5.
Categories Of Messages.

Message Types “A,B,D,L” Cannot Be Rejected.

A = Nav Warnings.

B = Gale Warnings.

D = Distress Alerting + Sar. Information.

L = Nav. Warnings To Suppliment Message Type “A”.

The Receipt Of Each Message Is Indicated By A Audio And Visual Alarm.
Preamble Of Text:
Eg, Zczc Ga23 Zczc Is The Start Of Message, “G” Is The Identification Of The Transmitter,”A” Is The Type Of Message, “23” Denotes The Number Of Message.

· For A Navtex Reciever If Login Accept Is Carried The Foll. Actions Will Be Carried Out By The Reciever.

1. Prints Header Code Of Messages Already Received,

2. Will Print Header Code Of Rejected Messages,Ie. Transmitter Not Selected Or Message Type Not Selected.

3. Will Print Information Of Corrupted Header.

4. Will Give Information Of Corrupted Message.

5. Will Print Messages Of An Error Rate Of Less Than 33%.

1. Will Print None Of The Above.

2. Will Print Messages Without Any Error.

S.A.R.T.S. Search And Rescue Transponders.
The Purpose Of The Sart Is To Indicate The Position Of Persons Or Vessels In Distress. They Operate On 9 Ghz(3 Cm X-Band Radar)
And Only Transmit When Interrogated By The Sar Vehicles Radar When Within 5 Nautical Miles.
The Transmission Produces A Distinct Line On The Radar Of About 12 Blips Extending Out From The Sarts Position Along Its Line Of Bearing. The Interval Between Each Blip Is 0.6 Miles.
At 1 Nautical Mile The Blips Shall Change To Wide Arcs And Become Complete Circles As The Sart Is Close To The Interrogated Sar’s Radar.The Blip Closest To The Sar’s Radar Is The Actual Location Of The Sart Vehicle.
Sarts Should Respond When Interrogated By A Mobile Units Radar With A Scanner Height Of 15 Mts At A Distance Of Atleast 5 Nautical Miles.
Also By A Compatible X-Band Radar Fitted To An Aircraft Operating At A Height Of 8000 Feet At A Distance Of 30 Miles.
An Audible Alarm Or A Small Light Is Incorporated Into The Device In Order To Draw The Attention Of The Persons In Distress That A Rescue Ship Or Aircraft Is Within Close Range.
The Battery Should Be Able To Operate For 96 Hours On The Stand-By Mode And For A Period Of 8 Hours On The Transmitting Mode.
Sarts Should Be Mounted As High As Possible. Imo. Recommends That The Sart Shoule Be Mounted 1 Mt. Above The Sea Level.
Sart Routine Tests And Mantainence.
Sarts Should Be Tested Once A Month To Obtain Proper Operation:
# Switch Sart To Test Mode.
# Check That The Visual Indicator Light Operates.
# Check That The Audible Beeper Operates.
# Set The Sart To Transmit. Check If Concentric Circles Displayed On The Radar.
# Check The Battery Expiry Date. Source: Gmdss Manual

G M D S S - Survival Craft Portable Vhf ‘S
It Is Used For Comunication Between Survival Craft And Rescue Craft.
The Equipment Typically Consists Of A Small Handheld Transceiver With An Integral Antenna.
The Foll. Are The Specifications Of The Said Equipment.

1. Provide Operation On Channel 16 And One And Any Other Channel.

2. Be Capable Of Operation By Unskilled Persons.

3. Be Capable Of Operation By A Person Wearing Gloves.

4. Single Handed Operation Except For Changing Channel.

5. Withstand A Drop From A Height Of 1 Mt.

6. Mantain Water Tightness To A Depth Of 1 Mt For 5 Mins.

7. Not Affected By Sea Water And Oil.

8. Should Be Light Weight, Small In Size And Not Having Any Sharp Projections.

9. Should Have A Primary Battery Ie. Non Rechargeable

And May In Addition Carry Rechargeables As Spares.

10. Be Of A Highly Visible Colour (International Orange Or Taxi Yellow) Or Have A Strip Of The Same.

11. Have The Capablity Of Being Attached To The Users Clothing.

Carriage Requirements:
# Gmdss Vessels Over 500 Grt 3 Portable Units.
# Gmdss Vessels 300-500 Grt 2 Portable Units.

29.

Hot work permit.

Pf 2

First Copy For Display At Work Area

Second Copy For Ship’s Record

Hot Work Permit
M.T. _______________________ Reference Number : __________
This Permit To Work Relates To Any Work Involving Temperature Conditions Which Are Likely To Be Of Sufficient Intensity To Cause Ignition Of Combustible Gases, Vapour Or Liquids In Or Adjacent To The Area Involved. Before Completing This Form, Refer To The Accompanying Guidance Notes, And To I.S.G.O.T.T.

· General

This Section To Be Completed By The Master

This Permit Is Valid From ....................................Hrs Date ...............................................

To ……………………….Hrs Date ……………………………….

Location Of Hot Work ..............................................................................……......................................

.........................................................................................................................……..............................

Has An Enclosed Space Entry Permit Been Issued ? (Reference Nr. …………..) Yes / No

Reason If ‘No’ .................................................................................................................................

Description Of Hot Work ...................................................................................................................

..........................................................................................................................................................

Responsible Officer …….…….....................................................................................................

Hot Work Team Leader : …..............................................................................................

· Section 1

This Section To Be Completed Jointly By Responsible Officer And By Hot Work Team Leader

1.1 Has The Hot Work Area Been Checked With A Combustible Gas Indicator For Hydrocarbon Vapours ? Yes; No Time .........................

1.2 Has The Surrounding Area Been Made Safe ? Yes; No Time .........................

Date / Time _____________________ Responsible Officer Signature : _________________________
Hot Work Team Leader Signature : _________________________

· Section 2

This Section To Be Completed By The Master

2.1 Has The Work Area Been Checked With Combustible Gas Indicator For Hydrocarbon

Vapours ? Yes; No Time .........................

2. Has The Equipment Or Pipeline Been Gas Freed ? Yes; No Time .........................

3. Has The Equipment Or Pipeline Been Blanked ? Yes; No Time .........................

4. Is The Equipment Or Pipeline Free Of Liquid ? Yes; No Time .........................

5. Is The Equipment Isolated Electrically ? Yes; No Time .........................

6. Is The Surrounding Area Safe ? Yes; No Time .........................

7. Is Additional Fire Protection Available ? Yes; No Time .........................

8. Special Condition / Precaution ……………………………………………………………….…

…………………………………………………………………………………………………..

· Section 3

Authorization
In The Circumstances Noted It Is Considered Safe To Proceed With Hot Work.
Date / Time ________________________ Master Signature : _______________________________

· Section 4

The Work Has Been Completed And All Persons Under My Supervision, Materials And Equipment Have Been Withdrawn.
Date / Time ________________________ Responsible Officer Signature : _____________________

Master’s Signature : ______________________________

Guidance Note For Hot Work Permit
General

a. Starting / Finishing Time Must Not Exceed The Authorized Signatories’ / Responsible Officer’s Working Hours.

b. Specific Location Of Hot Work Should Be Given.

c. Description Of Hot Work To Include Type Of Equipment To Be Used.

Section 1:
Applies To All Hazardous Work Not Involving Naked Flame Or Continuous Spark Production, And Would Include Use Of Electrical Equipment, Use Of Air Driven Rotary Equipment, Sand Or Grit Blasting, Hammering And Mechanical Chipping And Movement Of Equipment Or Materials Over Or Near To Machinery That Is Operating.
Section 2:
Applies To All Hot Work Involving High Temperature, Open Flame, Electric Arc Or Continuous Source Of Sparks Etc. This Type Of Work Includes But Is Not Limited To Welding, Burning And Grinding.
Test For Combustible Gas Should Be Carried Out Immediately Before Commencement Of Hot Work And At Frequent Intervals As Long As The Work Is In Progress.

30.

I.A.M.S.A.R.

I.A.M.S.A.R. :International Aeronautical And Maritime Search And Rescue Manual.
The Primary Purpose Of The Three Volumes Of The Iamsar Manual Is To Assist The States In Meeting Their Own Search And Rescue Needs, And The Obligations They Accepted Under The Convention On International Civil Aviation, The International Convention On Maritime Search And Rescue, And The International Convention For The Safety Of Life At Sea. These Volumes Provide Guidelines For A Common Aviation And Maritime Approach To Organising And Providing Sar Services. States Are Encouraged To Develop And Improvise Their Sar Services, Co-Operate With Neighbouring States, And To Concider Their Sar Services To Be Part Of A Global Sar System.
Each Iamsar Manual Volume Is Written With Specific Sar System Duties In Mind, And Can Be Used As A Stand-Alone Document Or, In Conjunction With The Other Two Volumes As A Means To Attain A Full View Of The Sar System.
Volume 1: The ‘Organisation And Management Volume’, Discusses The Global Sar System Concept, Establishment And Improvement Of National And Regional Sar Systems And Co-Operation With Neighbouring States To Provide Effective And Economical Sar Services.
Volume 2: The ‘Mission Co-Ordination Volume’, Assists Personnel Who Plan And Co-Ordinate Sar Operations And Exercises.
Volume 3: The ‘Mobile Facilities’, Volume Is Intended To Be Carried Aboard Rescue Units, Aircraft, And Vessels To Help In Performance Of Search, Rescue Or On-Scene Co-Ordinator Function And With Aspects Of Sar That Pertain To Their Own Emergencies.
This Manual Is Published Jointly By The International Civil Aviation Organisation And The I.M.O.
Contents Of Volume Iii:

1. Abbreviations And Acronyms.

2. Glossary.

3. Section 1: Overview.

4. Section 2: Rendering Assistance.

5. Section 3: On Scene Co-Ordination.

Types Of Search Patterns:

1. Expanding Square Search (Ss):

· Most Effective When The Location Of The Search Object Is Known Within A Relatively Close Limit.

· The Commence Search Point Is Always The Datum Position.

· Often Appropriate For Vressels Or Small Boats To Use When Searching For Persons In The Water Or Other Search Objects With Little Or No Leeway.

· Due To The Small Area Involved This Procedure Must Not Be Used Simultaneously By Multiple Aircraft At Similar Altitudes Or By Multiple Vessels.

· Accurate Navigation Is Required; The First Leg Is Usually Oriented Directly Into The Wind To Minimise Navigational Errors.

· It Is Difficult For Fixed Wing Aircraft To Fly Legs Close To Datum If Track Spacing Is Less Than 2 Miles.

1. Sector Search (Vs):

· Most Effective When The Position Of The Search Object Is Accurately Known And The Search Area Is Small.

· Used To Search A Circular Area Centered On A Datum Point.

· Due To The Small Area Involved, This Procedure Must Not Be Used Simultaneously By Multiple Aircraft At Similar Altitudes Or By Multiple Vessels.

· An Aircraft And A Vessel May Be Used Together To Perform Independent Sector Searches Of The Same Area.

· A Suitable Marker (For Eg. A Smoke Float Or A Radio Beacon) May Be Dropped At The Datum Position And Uysed As A Reference Or Navigational Aid Marking The Centre Of The Pattern.

· For Aircraft, The Search Pattern Radius Is Usually Between 5 And 20 Miles.

· For Vessels The Search Pattern Radius Is Usually Between 2 And 5 Miles And Each Turn 120 Deg Normally Turn To Stbd.

1. Track Line Search (Ts):

· Normally Used When An Aircraft Or Vessel Has Disappeared Without A Trace Along A Known Route.

· Often Used As Initial Search Effort Due To Ease Of Planning And Implementation.

· Consists Of A Rapid And Resonably Thorough Search Along Intended Route Of The Distressed Craft.

· Search May Be Along The Side Of The Track Line And Return In The Opposite Direction On The Other Side (Tsr).

· Search May Be Along The Intended Track And Once On Each Side, Then Search Facility Continues On Its Way And Doesn’t Return (Isn).

· Aircrafts Are Frequently Used For Ts Due To Their High Speed.

· Aircraft Search Height Usually 300 - 600 Mts During Daylight Or 600 - 900 Mts At Night.

1. Parallel Sweep Search (Ps):

· Used To Search A Large Area When Survivor Location Is Uncertain.

· Most Effective Over Water Or Flat Terrian.

· Usually Used When A Large Search Area Must Be Divided Into Sub Areas For Assignment To Individual Search Facilities On Scene At The Same Time.

· The Commence Search Point Is In One Corner Of The Sub Area, One Half Track Space Inside The Rectangle From Each Of The Two Sides Forming The Corner.

· Search Legs Are Parallel To Each Other And To The Long Sides Of The Sub Area.

· Multiple Vessels May Be Used For:

# Parallel Sweep By 2,3,4 And 5 Or More Ships.

6) Radar Search:

· When Several Assisting Ships Are Available, A Radar Search May Be Effective, Esp When The Position Of The Incident Is Not Known Reliably And The Sar Aircraft May Not Be Available.

· No Prescribed Pattern Has Been Provided For This Contingency.

· The Osc Should Normally Direct The Ships To Proceed In “Loose Line Abreast”, Mantaining A Track Spacing Between Ships Of The Expected Detection Range * 1.5.

Pls Refer To Iamsar For Detection Ranges

Visual Search:

· Individual Search Patterns Have Been Designed So That An Osc. Can Rapidly Initiate A Search By One Or More Crafts.

· There Will Be A Number Of Variables That Cannot Be Foreseen. Search Patterns Based On Visual Search Have Been Established Which Should Meet Many Circumstances. They Have Been Selected For Simplicity And Effectiveness And Are Discussed Later In This Section.

Note:
Track Spacing:

· Most Search Patterns Consist Of Parallel Tracks Or Sweeps Covering A Rectangular Area. The Distance Between Adjacent Tracks Is Called The Track Spacing.

· Correction Factors Based On Weather Conditions And Search Object Are Provided In A Table. Multiplying The Uncorrected Track Spacing (Su) By The Apropriate Weather Correction Factor (Fw) Produces The Recommended Track Spacing. S = Su * Fw .

· Changes In Weather, Number Of Assisting Crafts, Etc., May Occur, Making It Prudent To Alter The Track Spacing.

· The Smc Must Ensure That All Searching Ships And Aircraft Maintain Safe Seperations From One Another And Accurately Follow Their Assigned Search Patterns.

Section 4: On Board Emergencies.
Medico:

· Medico Messages Request Or Transmit Medical Advice From And To A Vessel At Sea.

· Each Medico Message May Be Addressed To Rcc’s Or Communications Facilities From Ships At Sea.

· The Messages Should Be Prefixed “Dhmedico” So That Communications Personnel Know To Handle Them As Medico Messages.

· The Itu List Of Radio Determination And Special Service Stations Lists Commercial And Government Radio Stations Which Provide Free Medical Message Service To Ships.

· These Messages Are Normally Delivered To Hospitals Or Other Facilities With Which Sar Authorities Or The Communications Facilities Has Made Prior Arrangements.

· Sar Services May Provide Medical Advice Either With Their Own Doctors Or Via Arrangements With Doctors Outside The Sar Organisation.

· There Are Several Commercial Enterprises Which Provide International Subscription And Pay Per Use Medical Advice To Vessels At Sea.

· Replies To Messages Should Indicate The Medical Facility Which Provided The Medical Information.

Medevac:

· If Medical Evacuations Are Being Concidered The Benefits Must Be Weighed Against The Inherent Dangers Of Such Operations To Both The Persons Needing Assistance And The Rescue Personnel.

· When Medical Assistance Is Required, Information Is Sent As Per Format Provided In This Section To Be Sent To Rcc. Other Information May Be Necessary In Certain Cases.

· The Final Decision About Whether It Is Safe To Conduct An Evacuation Remains Ultimately With The Person In Command Of The Rescue Facility Tasked With Conducing The Evacuation.

Persons Overboard:
There Are Three Situations, Namely:

· Immediate Action: The Person Overboard Is Noticed From The Bridge And Action Is Taken Imediately.

· Delayed Action: The Person Is Reported To The Bridge By An Eyewitness And Action Is Initiated With Some Delay.

· Person Missing Action: The Person Is Reported To The Bridge As Missing.

When The Possiblity Exists That The Person Has Fallen Overboard The Crew Must Attempt To Recover The Individual As Soon As Possible.The Factors Affecting The Speed Of Recovery Include:
# Ships Manoeuvering Characteristics.
# Wind Direction And Sea State.
# Crews Experience And Level Of Training.
# Capablity Of The Engine Plant.
# Location Of The Incident.
# Visiblity Level.
# Recovery Technique.
# Possiblity Of Having Other Vessels Assist.
Initial Action:

· Throw A Life Ring Over The Side As Close To The Person As Possible.

· Sound Three Prolonged Blests On The Ships Whistle, Hail “Person Overboard”.

· Commence Recovery Manoeuvre.

· Note Position, Wind Speed And Direction And Time.

· Inform Master Of The Vessel And Engine Room.

· Post Lok-Outs To Keep The Person In Sight.

· Set Off Dye Marker Or Smoke Flares.

· Inform Radio Operetor And Keep Updated On The Position.

· Stand By The Engines.

· Prepare Lifeboats For Possible Launching.

· Distribute Portable Vhf Radios For Communication Between Bridge, Deck, And Lifeboat.

· Rig Pilot Ladder To Assist In The Recovery.

Standard Methods Of Recovery:
# Williamson Turn:

· Makes Good Original Track Line.

· Good In Reduced Visiblity.

· Simple.

· Takes The Ship Farther Away From The Scene Of The Incident.

· Slow Procedure.

a. Rudder Hard Over (In An Immediate Action Situation Only) To The Side Of The Casualty.

b. After Deviating From The Original Course By 60 Deg. The Rudder Hard Over To The Opposite Side.

c. When Heading 20 Deg’s Short Of The Opposite Course, Rudder To Midship Position And The Ship To Be Turned To Opposite Course.

# One Turn (Single Turn Or Anderson Turn)

· Fastest Recovery Method.

· Good For Ships With Tight Turning Characteristics.

· Used Most By Ships With Conciderable Power.

· Very Difficult For Single Screw Vessels.

· Very Difficult Because Approach To Person Is Not Straight.

a. Rudder Hard Over (In An Immediate Action Situation Only) To The Side Of The Casualty.

b. After Deviation From The Course By 250 Degs Rudder To Midship Position.

c. Stopping Manoeuvre To Be Initiated.

# Scharnov Turn:

· Will Take Vessel Back To Her Wake.

· Less Distance Is Covered Hence Saving Time.

· Cannot Be Carried Out Effectively Unless The Time Elapsed Between Occurrence Of The Incidentand The Commencement Of The Manoeuvre Is Known.

a. Not To Be Used In An Immediate Action Situation.

b. Rudder Hard Over.

c. After Deviation From The Original Course By 240 Degs Rudder Hard Over To The Oposite Side.

d. When Heading 20 Degs Short Of The Opposite Course, Rudder To Midship Position So That Ship Will Turn To The Opposite Course.

Appendices:
Appendix A: Regulation V/10 Of The International Convention For Safety Of Life At Sea, 1974.
Appendix B: Search Action Message.
Appendix C: Factors Affecting Observer Effectiveness.
Appendix D: Standard Format For Sar. Situation Report (Sitrep).
Appendix E: Sar Briefing And Debriefing Form.

Table of Contents

Chapter 29 : | hot work permit |

MERCHANT NAVY

Friday 25 February 2011

Additional notes (chapter 27 – 30)

Additional notes (chapter 27 – 30)

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