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| Marine Watch Site Map | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| TECHNICAL LIBRARY | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
SAFETY & SURVIVAL
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| Library Catalogue | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| SURVIVAL GEAR | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Knowing
beforehand the contents of the life raft is important when the raft has to be
used in anger. Not only that but knowing how to use equipment can make the difference
between surviving and perishing prematurely. The following advice is not exhaustive
but it will be worth knowing if the time ever comes. Sea Anchors are used to reduce drift and keep the life raft as close as possible to the most likely reported position of the stricken parent vessel. This vastly improves the chances of rescue and thus the sea anchor(s) should be streamed continuously. Frequent inspections of the sea anchor, the line and the attachment point(s) are necessary. Buoyancy tubes of the liferaft will need to be adjusted to allow for the different temperatures between night and day. If the life raft is fitted with relief valves they will allow air to escape during the heat of the day. Consequently at night they need to be re-inflated. Marker Dye should be used according to instructions only when an aircraft is seen or the noise of an aircraft is heard. Grab Bags can be either individual or crew based. Their purpose is to supplement and / or personalise an emergency kit. The contents will probably vary depending on the likely conditions. Care must be taken in deciding the contents and consideration should be made of the bag's weight, size and accessibility in an emergency. Likely items for inclusion are Spectacles, Medication, Water and / or Solar Still, Waterproof Matches, Magnifying Glass, Space Blanket, Fishing Tackle, Plastic Bags and Rope. |
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| Heliograph or signalling mirror is simply a piece of mirrored glass or shiny metal - about 10cm square, preferably with a small 5mm hole etched or cut from the class and cut from the metal in the geometric centre. The only other requirement is a visible sun. To use it hold the heliograph just in front of an eye with the reflective surface available to the sun. With the other arm extended look through the aperture and aim the reflected sunlight at the tip of an extended finger. Keeping the reflected light on the finger tip move the extended hand so the finger tip is towards the aircraft or thing being signalled. Very small movement of the mirror will cause a flashing at the object being signalled. This signal can be seen up to about 30Km in good conditions. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Flares & Rockets need judgement in when to use them. Flares can be seen up to 8Km by day and 16Km by night. Rockets have even greater range much depending on whether the sighting vehicle is airborne or on the sea. Operating instructions should be carefully read and understood before the need to use them arises. Care must be taken to avoid damage to the raft when firing any pyrotechnic device. When flares or rockets are in short supply the decision to set a device off could depend on the aspect of the target. For example if it is a ship and has only the stern showing a flare is not likely to be seen. If ships or aircraft are seen to alter course towards the raft fire a further signal. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| HEAVING TO | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| There
are various ways to cope with extreme weather in a sailing craft at sea with
a variety of opinions on what is best. Two methods stand out for the times when
the extreme conditions cannot be avoided. The first is to be far enough away
from land to be able to stow all sails, secure everything on deck, stream a
sea anchor, make the boat water tight ant go below to wait until conditions
get better. The next method is to heave to which is a method of using a minimum amount of sail to slow and / or maintain a constant side pressure on the boat. Usually the headsail is backed to counteract the pressure of a reefed mainsail, trisail and / or mizzen. If chafing of the headsail against the weather shrouds can't be avoided it will have to be lowered. The only consequence is likely to be that the vessel will sit with the bow a little closer to the wind. The tiller will usually be lashed to leeward. The angle of the boat to the wind will vary but something around 50-60 degrees is about right. The aim is to get the boat to drift slowly downwind. All angles of sailing can be quickly resumed and the crew can rest safely below. The use of a properly streamed drogue or sea anchor can further reduce the downwind drift. Boats using this technique have suffered knockdowns and lost gear from the deck but they have survived. To prepare for such an eventuality the prudent cruisers will have their mainsail strengthened above the highest reefing points. |
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| MEDICAL KIT | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| The
number of items in a first aid medical kit will depend on the type of trip being
done, the area of operation and the proximity of assistance in the event of
a medical problem. Naturally for those venturing further from home the medical
kit should be more extensive. The following list contains items that could be
needed for periods of up to a week. Asprin / Panadol / Panadeine UV Filter Cream Antiseptic Creams / Solutions Crepe Bandages (75-150mm) Cotton Wool Swabs & Dressings Seasickness Tablets Torniquet Bandaids & Sticking Plaster Burns Ointment Scissors Safety Pins Diarrhoea Pills Forceps Sutures / Butterfly Clips Thermometer Eye Pads / Patches First Aid Book There is also a range of prescription medicines that should be carried on extended voyages - and for these there will be regulations for their storage and / or use. The amount and quantities carried for each item depends of the extent of the voyage and the life of the item. All first aid items should be stored in waterproof containers with the contents listed on the outside. |
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| DECK SENSE | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
When working on the deck of a boat particularly
in rough conditions, at night or poor visibility there are a number of precautions
to be taken to reduce the risk of falling overboard and especially to be unnoticed
doing so. The following advice is useful |
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| SURVIVAL TIMES | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| The charts below give a guide to a person's survival time in Australian waters during Summer & Winter. No allowance is made for either physical or mental condition - including possible injuries. Nor can any allowance be made for the type or condition of any flotation device and of the type of clothing worn. The times are a broad guide only given the temperatures shown based on average survivors. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| STAYING WITH THE VESSEL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| There
are several critical decisions to be made when abandoning a vessel. The first
is the time to go. There are many recorded cases of an abandoned vessel being
found with no trace of survivors. A valid piece of old salts' advice is : 'Never
step down into a liferaft'. This means be very
careful of abandoning too early. Having left the mother vessel the survivors should do all in their power to stay with it until it actually sinks. This advice applies to any stricken craft whether a long way from shore or in a situation where help is much closer. Staying with the parent craft makes the task of the rescuers infinitely easier. The bigger the target for rescuers the easier it is to find both visually and electronically. Even a semi-submerged craft provides a more sustainable life support system than a liferaft. In addition the drift of a disabled boat is much easier to predict than that of a liferaft - thus making a search less complicated. This means that once detached from the mother vessel the sea anchor or drogue should always be streamed and a careful check made to ensure there is no resultant chafing. STAY WITH THE VESSEL FOR AS LONG AS POSSIBLE |
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| FOOTWEAR | S&S Topics | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| The
time will come for most crew where maintaining a secure footing is vital for
the safety of both the individual and the boat. Furthermore there are many many
fittings on boats that jump up and / or out and bang crew on the body and especially
the feet. While there are many measures that will keep items from damaging feet
the most effective by far is to wear a suitable pair of shoes or boots. Although cumbersome waterproof boots which give extra ankle support will be best then down the scale are various waterproof shoes and when the boat will be "dry" any other shoes. Naturally any footwear needs to be both anti-slip on a wet deck and non marking. An excellent dry shoe is the Dunlop Volley SS sandshoes - which grip like glue, dry fairly quickly and make excellent reef walkers - good for going to a rocky shore in the dinghy too! They are cheap and the only vice they have is to bring back lots of sand and / or dirt back on board. |
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| RESCUE ? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| EPIRB CARE & USE | S&S Topics | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
# Familiarise all crew with the operation
and procedures relating to the unit(s) on board. When Activating |
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For more information see the longer item on ERIRBs |
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| LOOKOUT | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
A vital part of collision avoidance is in
seeing another vessel first before being able to decide what is to be done.
Road accident records are full of drivers who "did not see" the
other vehicle & on many occasions it will be perfectly true. Seeing another
object is by no means automatic and in some circumstances an object will not
be seen unless natural deficiencies of the brain and eye are actively compensated
for. Factors which stop an observer's brain from registering an object include
For more relevant information see the item on Vision and the Vision item in the Crew Fitness section. |
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| BEING TOWED | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| S&S Topics | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The
time may come when a sailing vessel needs to be towed - when aground or with
a disabled engine when sailing is not safely possible. On such occasions the
rescuing vessel may not have skilled crew on board. The skipper of the vessel
being rescued will need to accept responsibility for the tow and particularly
for any damage caused. Therefore this skipper should be responsible for the
arrangement of the towing rig. Where the rescuing crew are experienced, common
sense dictates that all decisions are made with consultation both ways. The crew to be towed should make as many advance preparations as possible. Decide the best towing points. If the vessel is not fitted with a strong towing point forward a bridle from both main winches should be made ready; it should run forward to the bow to a position where the tow line can be attached. Prepare lines and fenders, determine how the tow line should be passed, get communication devices ready (radios, loud hailer, mobile phone), make a drogue ready, make tools ready (e.g. sharp knife, bolt cutters, pliers). Have writing materials handy - for taking down details of rescue vessel such as mobile phone number. Prepare and don emergency gear (life jackets and harnesses) when the tow is to be in difficult conditions - such as in rough weather, at night or when a bar has to be crossed. When the tow arrives make sure you & your crew understand any requirements of the rescuing vessel. Make sure the rescue crew are aware of your draft - especially when it is more than their own. When the tow line is secured do not allow any crew to stand in a direct line with the tow line under tension. Have one crew designated as the tow watch being prepared to dump / cut the tow if a dangerous situation arises on either vessel. All other crew should be positioned as far aft as safely possible. Agreed communications should be monitored. Be prepared to steer if available to follow the towing vessel. - but usually taking the advice of an experienced towing crew in this regard. Where the tow is to be in conditions of significant swell rig a long tow line so that the two vessels are at least two waves apart - especially when crossing a bar. Do not expect to be towed all the way to your optimum location. When nearing the tow drop site have anchor prepared or lines ready to take a mooring or tie up at a jetty. It will be common courtesy to reimburse the towing vessel for at least the fuel expended. For other information see more about Towing. |
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| SEARCH & RESCUE DETAILS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Every
vessel skipper should ensure that appropriate details of the vessel and the
skipper's intentions should be left with a responsible person on shore who
can raise an alarm if post voyage contact is not made by a reasonable time. The
best method is to notify a land based agency of these details by radio, phone
or any other means of these details. Coastal Patrols and Coastguards
are set up for just this purpose and they can be best contacted by either 27Mhz
or VHF radio as the voyage is begun. The next best method is to leave appropriate
details with either family or friends who would contact the Police if there
is no contact by the nominated time.. Information required is Vessel Description, Intentions, Persons on Board (POB) & Estimated Time of Return (ETR). The pages below show the full range of useful information that should be left behind. Larger scale images of each page can be downloaded to make individual single sheets which can then be laminated back to back and kept on the frig. Details for each trip can then be inserted using a fine whiteboard marker. |
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