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Listing all posts with label GPS chartplotter. Show all posts.
  1. The anniversary of one of the most infamous ocean tragedies of all time has just passed recently, the sinking of the Titanic, just 100 years ago, on April 15, 1912. America's Boat US Foundation asks - what have ocean travelers of today learned from the Titanic tragedy? Well, what have we learned?

    In 1914, two years after Titanic's loss of 1,503 lives, maritime nations gathered in London, adopted the International Convention of the Safety of Life at Sea (SOLAS Convention) and put in place a series of measures learned directly from the tragedy.

    Slow down: The commission that investigated the sinking found that excessive speed combined with the prevalence of ice flows was a major factor in the disaster. Do you slow down when boating at night, in foggy weather or when in unfamiliar waters? Any time you're out on the water and something doesn't 'feel right,' slowing down is your best first move, giving you critical time to react.

    Call for help:  The radio that the Titanic used to send out the SOS had a limited range of only 200 miles and the airwaves were 'crackling,' leading rescuers to misinterpret her position. Also, sadly, the vessel closest to her, the Californian, had shut down her radio for the night. Sailing nations of the world have seriously upgraded their response to distress signals. In the USA, the Coast Guard Rescue 21 system now covers over 40,000 miles of US coastline and some major rivers, taking the 'search' out of search and rescue 24/7 by providing accurate location information with the simple push of one button - but only if your boat has a DSC VHF radio and it is properly connected to your GPS/chartplotter.

    Unfortunately, today coastguards around the world report that most DSC VHF radios are not connected to a marine GPS device or GPS chartplotters. If you travel offshore or boat alone, an EPIRB or personal locator beacon (PLB) can also speed your rescue. On larger bodies of water a cell phone should only be considered a back-up emergency communications device, and always have your VHF on and tuned to channel 16.

    Give a safety briefing to guests before you leave the dock: Regrettably, no lifeboat drills were held aboard the Titanic, the crew lacked training in their operation, and there was no public address system. Today, before they head out, recreational boaters and anglers can simply share with guests the location of the safety equipment and how to use gear such as the VHF radio, distress flares, fire extinguisher, or inflatable life jackets.

    Have a life jacket for everyone aboard - that fits. It is inconceivable to consider, but the Titanic did not have enough critical safety gear, such as lifeboats, for all her passengers. Do you have enough correctly-sized life jackets for everyone aboard, and are they readily accessible? A child in an adult size life jacket could easily slip out simply by raising their hands above their head. Be sure all gear is appropriate to the individual passengers on board at any point in time.

    Planning ahead is crucial to a safe and enjoyable outing, so don't shortcut yourself or your passengers in this area. In order to have fun you should first and foremost be sure to be safe.

  2. It was reported on the 12th of March 2012 that a day's fishing for five Victorians almost ended in tragedy off Port Stephens on the 6th of March when their 8 meter vessel was overturned by a rogue wave as they headed back to port in the afternoon.  The men spent a couple of hours in the water hanging onto the upturned vessel until rescue helicopters arrived and plucked them out of the rough sea.  Search and Rescue Authorities were alerted to the distress after the quick thinking skipper of the vessel activated the EPIRB on board.

    According to the Newcastle Herald the skipper is being praised as a hero after his quick thinking saved the lives of two of his fishing mates and alerted the authorities to the boat’s whereabouts. He told the Newcastle Herald that while treading water in the boat’s hull he grabbed a distress beacon and life jacket then tied a piece of rope to a chair before swimming to the surface.  ‘‘Without the EPIRB (emergency distress beacon) we were gone,’’ he said.  ‘‘I managed to tie a rope to the boat and that way two men could cling to the rope while the rest of us hung onto the boat’s motor.  ‘‘Without that rope those two would have floated away.’’

    The Westpac Helicopter picked up 4 of the men whilst an RAAF search and rescue Helicopter saved the 5th. All men were transported to John Hunter Hospital and discharged at about 7:30pm that evening.

    What a great tale of quick thinking in the moment of crisis and planning ahead before leaving port! I, personally have always thought it was smart to be sure always to have an EPIRB on board any time you set out with your vessel. Of course, it doesn't hurt to be sure to have one of the GPS chartplotters along, too, to keep you on course in the first place. Well, that's just one of my personal soap boxes, but the above story really shows the validity of safety first thinking. What a smart skipper, and one to certainly be commended. Well done.

  3. GPS fishfinder comboTurn by turn directions for marine GPS? That’s a new one on me! I was talking to someone who asked us for exactly that just recently. That sounds pretty slick, but can’t say I have ever seen that before.  After all, on a river or a lake the maps are going to show you where there are obstacles and where it is safe, deep enough for the boat to navigate safely.  Nobody sticks to just one particular route unless they are navigating white water or other treacherous situations, working around shoals or sandbars or whatever.

    Anyway, GPS chartplotters or GPS fishfinder combos are meant to show you the lay of the land, the obstacles and the channels which, if you actually use their aid, will help you to navigate safely and to find where those big fish actually live, but won’t give you a strict street map setup.  After all, in my book that is much of the magic of spending time on the water, the ability to wander freely and enjoy the ride.  Again, turn by turn directions?  Not really, but marine GPS will still certainly help you to find your way and bring you home again.

  4. We got a call recently from someone wondering whether he would be able to use the existing transducer that came with his boat with new GPS fishfinder combination.  That opened a conversation about compatibility.  Not all brands of ducers will be compatible with all brands of GPS fishfinder combination.  You really want to do your homework on that one to be sure that you have the correct match.  Also, his old fishfinder was set into his boat, permanently affixed; and he wanted to be able to drop his new model into the same slot.  We did the homework and found the GPS fishfinders that would meet all his criteria.  That was an interesting exploration, but we found some great options that would fit perfectly.  During that search it brought out the fact that, although some GPS fishfinders will work permanently affixed to the boat, some will actually get much better reception and give you better screen visibility if they are on a swivel mount which gives clearance all around.  These are all important things to consider when shopping for a replacement GPS fishfinder combo for your boat to give you the best fishing possible.  Happy fishing, and I hope you catch the Big One!

  5. Hey boating enthusiasts, now that you are familiar with marine GPS navigation, both GPS chartplotters and fishfinders, the best of both worlds is a GPS fishfinder combination. With a GPS fishfinder combo you are able to not only chart your course to your favorite fishing grounds, but to clearly take your deep sea and fresh water fish finder GPS fishing to new levels. Plus, these waterproof units include a high-sensitivity internal or external GPS receiver, so you will always know your position at sea, then they will help you find those monster fish once you get there. There sure is nothing like a nice relaxing day on the water, a friend by your side and fishing pole in your hand.

  6. Gimbals are used in mounting systems, especially for marine vessels, which consist normally of two concentric rings mounted such that their axes are able to pivot at right angles from each other such that one swings freely within the other.  They work much like a gyroscope and are used as a mount for equipment such as a compass or other nautical equipment (even stoves, lamps, etc).  Gimbals operate in such a manner that objects are permitted to swing freely between them so that the object will remain suspended in a level manner regardless of any motion of their support. Gimbals are commonly used for sea-faring instruments so as to counteract the motion of the vessel.

    There are several parts to a gimbal mount.  Normally it is made of a set of rings, but sometimes is a ball and socket arrangement, attaching ultimately to a bracket which will support the equipment and another part which will attach to the vessel.  In this case, we would use them to attach our GPS fishfinders and/or chartplotters as important and useful marine accessories.

  7. Most marine GPS fish finders and chart plotters either include or need a transducer to work properly.  The question comes to mind “What is a transducer and what does it do?”  According to Wikipedia a transducer is a device, usually electrical, electronic, electromechanical, electromagnetic, photonic or photovoltaic that converts one type of energy or physical attribute to another for various purposes including measurement or information transfer (for example: pressure sensors).

    There are three kinds of transducers. A sensor is used to detect a parameter in one form and report it in another form of energy (usually an electrical or digital signal), such as a tachometer. An actuator is used for the transformation of energy or in other words, it converts electrical signal into generally nonelectrical energy. An example of an actuator is a loudspeaker which converts an electrical signal into a variable magnetic field and, subsequently, into acoustic waves. The third kind of transducer has both functions -- for example, typical ultrasonic transducers switch back and forth many times a second between acting as an actuator to produce ultrasonic waves, and acting as a sensor to detect ultrasonic waves.

    The bottom line here is that a transducer is what helps the fish finder or chart plotter “find” the fish or the contours of the bottom of the lake, river or other body of water.

  8. In helping our new friend search for the best GPS chartplotter navigation for his enclosed wooden boat, we have discovered that the manufacturer’s descriptions do not always educate you on whether your unit will work in an enclosed area or not.  We are finding that it is important to do more research and be sure that the unit can handle an external antenna before purchasing it.   There are often situations where you do not want to navigate your boat from the fly bridge and would appreciate the comfort of navigating from within an enclosed cabin, so be sure your unit has that capability before purchasing the wrong GPS navigation system/chartplotter for you.   It would be convenient if the manufacturers would include that in their descriptions, but that is not always the case.

    Several GPS chartplotters have the capability of being used with or without an external antenna and should be reviewed with this in mind.  Be sure to look for more than an internal antenna.  An internal antenna is convenient as it is more compact and does not need to be set up separately; and although it will work quite well on many boats, it will not serve in all situations.  Another thing to consider is purchasing a 2nd mounting station in order to easily switch back and forth between navigating either from the cabin or the fly bridge.  Happy boating!

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