Contents

A look at the various Marine Electronics on the market. What they do and how they work.

Marine Electronics

Marine ElectronicsAutopilots The first self-steering gear was introduced in the 1920's to control model yachts but it was not until 1948 that the principle was applied to full scale yachts. Standing at the helm for lengthy periods, monitoring instruments and keeping a good look out can be very tiring. An autopilot relieves the helmsman from steering the correct course leaving him free to maintain a proper watch. The autopilot can be set to either steer a compass course or a course relative to the wind. A fluxgate compass or electronic wind indicator feeds information to a microprocessor which then makes the necessary rudder movements to return the vessel to it's required course. The mechanical power is applied to the rudder by either electric linear activators, hydraulic pumps or rotary drives. GPS/Chart plotters can be used to input navigational instructions to the autopilot.Battery Chargers will keep batteries fully charged thereby extending their working life.Chart Plotters Typically a chart plotter consists of an antenna, mounted high on the boat, to track GPS signals and a display unit sited either at the at the navigation station or the helm of the vessel. The vessels position is sent from the antenna to the display unit which in turn shows it graphically on the chart. The Chart itself will look similar to it's paper equivalent and show depth, land mass, navigational aids such as bouys and potential dangers in the form of wrecks and obstructions. The user can add way points to the chart and zoom in and out of the display. Chart plotters can be connected to drive an autopilot and/or send GPS data to a fish finder or radar. They can also interface with a laptop enabling complex passage planning to be done away from the boat and then entered into the chart plotter after arriving at the boat.Magnetic Transmitting Compasses work like traditional compasses using magnets to determine the vessels orientation to the earth's magnetic field they then transmit the boats heading to an electronic display. They make steering easier than with conventional compasses because they display steadier headings and do not suffer from the "lag" that occurs when making a turn. They can interface with chart plotters, autopilots and radar. Fluxgate Compasses consist of two pieces of readily saturated magnetic material with coils wound round them in opposing directions. AC current is passed through the coils and the material is saturated in one direction and then the other. The earth's magnetic field affects slightly the time at which saturation occurs, earlier in one coil and later in the other. The difference is then calculated giving an output proportional to the earth's magnetic field. They are accurate to 0.1 of a degree. Their output can be displayed digitally to the helmsman or they can interface with autopilots, chart plotters and radar.Echo Sounders work on the same principle as sonar. A transducer emits a narrow beam of high frequency sound. This is reflected by any solid objects and the time between transmission and receipt of the echo is measured. The speed of sound through water is know and so the range or distance to the sea bed can be calculated. That is then displayed in metres. Forward Looking Sonar (FLS) enables you to see the underwater hazards before you're actually on top of them. A typical range for a FLS is 150 metres.An Emergency Position Indicating Radio Beacon (EPIRB) is a piece of equipment designed to float free of a vessel in distress. It then sends a radio signal that can be detected by Search and Rescue Satellite Aided Tracking (SARSAT) satellites. They relay a message to a ground station that in turn can instigate a search and rescue operation.Fish Finders use the same technology as sonar. A narrow beam of high frequency sound is transmitted by a transducer, this is reflected by solid objects such as the sea bed. By developing this technology fishfinders provide displays that show where the fish are and they can differentiate between bait fish and larger speciesGlobal Positioning System (GPS Receivers) - This system was originally designed for military purposes and is owned and operated by the United States Department of Defence. 24 satellites are arranged in a "birdcage" around the globe, they are positioned in such a way that at any place on the earth's surface a direct line of sight can be established to a minimum of 4 satellites. A fix is obtained by measuring accurately the distance between a satellite and the GPS receiver at a precise time. Because the exact position of the satellite is known, these distances provide position lines which are converted by a microprocessor within the GPS receiver to read outs of latitude and longitude.The log is used to measure the boats speed through the water. A paddle wheel or impeller, mounted below the waterline is turned by the flow of water, this generates electrical impulses that are fed to a microprocessor that displays both speed and distance run.Inverters - On most boats today you will find domestic equipment of one sort or another. For on board entertainment there are televisions and stereo systems. With the popularity of chart plotters comes the PC or laptop. Maintenance often requires the use of power tools. Liveaboards might have a washing machine, dishwasher or microwave. Can take 12v, 24v or 48v supply and convert it to a stable 110 v or 220v AC supply.Navtex can perhaps best be described as a continuously updated telex service providing navigation and weather information within specified areas. An on board receiver, tuned to 518kHz, the worldwide Navtex frequency, if left turned on will either print out or display the latest massages sent from a local station. The service is available up to 400 miles from the coast.Radar enables you to see what otherwise would be invisible. They offer greatest benefit at night and in fog or rain and are of particular value when close to shore or in busy shipping lanes. They consist of an antenna and a display. The antenna sends out a stream of RF energy which is reflected back off hard objects. When this energy is bounced back it is converted to a signal which displayed to the user. The antenna rotates every few seconds, the display continuously calculates the direction of the antenna and so a precise bearing to the target is calculated. The time is measured for the energy to be reflected and so the distance of the target is also displayed.Satellite Phones consist of an antenna, a modem and a normal handset. They are powered by an iridium battery. Their range is anywhere covered by in Inmarsat Mini-M satellite. Voice, fax, email and data can be transmitted.Satellite TV requires an antenna and of course a television. Reception is available within a "footprint" which is based on EIRP (Effective Isotropic Radiated Power) of a transmitting satellite. The EUTELSAT together with the two ASTRA satellites cover Europe. NILESAT and the two ARABSATs cover Africa and the Middle East. Good coverage is also available in North, Central and Southern America.SSB Radio has a range of several thousand miles. You will need an FFC license, or the equivalent in whichever country you plan to operate it. Power consumption is a consideration. Up to 100 Watts may be required for transmission. SSB radio requires several items of equipment. A transceiver capable of SSB operation, An antenna, this must be 8 metres long and in practice most boats use a backstay or shroud for the purpose having fitted the necessary insulators. An antenna tuner matched to the transceiver model. If you want to send email you will also need and radio modem and computer.VHF Radio The power required to transmit is minimal, all sets have the option of transmitting on either 1 Watt or 25 Watts and the lower power should be used whenever possible. Unlike telephones that allow you to both talk and hear at the same time most VHF sets require you to press a transmit button prior to talking. This is known as simplex. Duplex sets are available but are much more expensive. VHF radio waves travel in straight lines so the aerial should be mounted as high as possible, preferably at the masthead.

Finding The Perfect Used Boat

Finding The Perfect Used Boat

Finding the perfect Arizona classified ad with the perfect boat for you, especially if you are a first time boater, may seem like a very difficult task to accomplish. To help you in your quest for the perfect boat, there are a few things you should know.Deciding what is important Choosing the right boat is more than just locating one for sale on one of the many Arizona online classified ad sites, like Qwixo.com. Really, its all about knowing what is truly important to you. You will need to decide whether you will be using the boat for your own private use, fishing, or cruising. You should also consider your families wishes and feelings, since buying a boat for your own personal needs without consulting your family will probably lead to disappointing experiences or less time spent on the water.Typically, boats will fall into five categories which are fishing boats, power boats, sailboats, personal watercraft, and self powered boats. To help you find the perfect boat, well take a look at some of the features that each one offers.The designs for fishing boats will vary quite a bit, as are the places you can use them. The boats that are meant for shallow waters of inland lakes and rivers are not the same boats meant for deep seas and great lakes. There are many different designs, even boats that serve no other purpose besides fishing.These types of boats normally have stowage and holders for bait, fishing poles, tackle, and even special tanks to hold live fish. Other types of fishing only boats feature an open platform where anglers can fight fish from all sides of the boat.Power boats are the most popular boats sold. The designs on and of power boats are as varied as their uses. Boats with seating in the front are called bow riders, which are mainly used for towing skiers or rafts. Most boats can also be used for fishing as well. If you want to do both, there are ski and fish combinations available.When you first learn to pilot a sailboat, it can be very challenging, although very rewarding as well. A sailboat requires more skill and knowledge to operate than some other types of boats, although they are also considered more rewarding once mastered. With all available sailboats, the single masted sloop is the most popular design. For those who only boat on occasion, catboats, daysailers, and dinghies are small and easily trailer able.When you finally decide on the perfect boat for you, look at what each one offers and how you plan to use it. The perfect boat for you is out there, all you have do is find the one that best matches your needs, and an online Arizona classified ad site is the best place to start.

A Guide To The Oxford And Cambridge University Boat Race

A Guide To The Oxford And Cambridge University Boat Race

I have been fascinated with the annual Boat Race between Oxford and Cambridge University for as long as I can remember. I didnt attend any of these top two British Universities, nor do I have an avid enthusiasm for rowing but this traditional race of the two boats over exactly 4 miles and 374 yards still holds a fascination for me. I am not alone as the televised event is broadcast, from the historic River Thames, to hundreds of countries and has an audience of millions. The idea for the boat race between these paragons of academia was dreamt up by two students, both named Charles, funnily enough. Charles Merivale was at Cambridge University and Charles Wordsworth was at Oxford.Cambridge issued their challenge to Oxford on March 12th 1829. Ever since then, it has been a tradition for the loser of a years race to challenge the other boat to a rematch the following year.On 10th June 1829, thousands of enthusiastic people descended on the small town of Henley-on-Thames in Oxfordshire. They were there to witness the first ever staging of the Boat Race between Oxford and Cambridges best rowing teams. In a rather embarrassing turn of events the race had to be stopped shortly after both boats had begun to be rowed. It was restarted and Oxford was the winner of the first boat race against Cambridge.One thing that I didnt realise about the Boat Race until fairly recently was that the members of both crews do not get any special dispensation as far as their studies go. If they cant keep up with their academic commitments then the students must resign from that years boat squad.The Boat Race is on a Sunday in March or April and the main event is preceded by a competition between Isis and Goldie. These are the reserve boats for Oxford and Cambridge in that order. About half an hour later the Blue Boats, as the first teams of each University are known, takes place. Cambridge is light blue and Oxford dark blue.

Boating Holidays

Boating Holidays

Boating holidays are a wonderful way to spend the summer! Just pack your bags and float around on a houseboat or a yacht for a few weeks, enjoying the sunshine, fishing and swimming and visiting towns along the shoreline. It's comparable in cost to staying in a hotel, with so much less hassle. And it's great for the whole family, especially the kids. Children always find entertainment on and around water. They swim and snorkle, while adults relax in a fold-up chair with a cool drink and a book. Boating holidays, as opposed to travel on large cruise ships, offer a more intimate and relaxed voyage without the bustle of thousands of mega-ship passengers all around you. And the venues are more intriguing than the tourist traps visited by the big "cruise ships" . The smaller boats are surprisingly well-serviced, with features such as showers and sometimes bicycles for tours around the countryside during stops. Many online services throughout the world offer trips on local canals and lakes surrounded by historic locations. What about a canal trip throughout Holland? This seafaring nation was built on marshland, and vestiges of the marsh still remain in the form of canals criss-crossing the whole country connecting quaint towns (with architecture carefully preserved, thanks to Dutch laws against the remodeling of historic buildings) to cosmopolitan cities such as Amsterdam. England and Wales also have canals, are a multitude of tours are available, such as Llangollen, Four Counties and Cheshire Rings, Oxford and Avon canals, and the river Thames. Unknown to most tourists, there is a network of waterways that traverse England from Yorkshire to Avon and into Wales. See different historic towns without battling holiday drivers on Europe's crowded roads (and believe me, if you are used to driving only on North America's wide freeways, European traffic will give you a shock). In Scotland, how about a boating holiday on 23-mile long Loch Ness? There's no guarantee Nessie will show up, but you are bound to be impressed by the rugged grandeur of the Great Glen and the battle-scarred castles surrounding it. It is one of Europe's most spellbinding locations, and a pleasant surprise to those under the impression that there is no wilderness left in Europe. Eagles, ospreys and other rare birds and even otters live in this pristine environment. Needless to say, opportunities for fishing abound. Visit the Loch Ness Center at Drumnadrochit to learn the in-depth history of the area. Don't forget to consider a romantic boating holiday on the waterways of France. The canals of Brittany, Burgundy, Alsace, River Charente, River Lot and the South of France offer beauty, culture, and inimitable French food and wine enroute. In North America, the Great Lakes region is so large it is impossible to see it all on one 2-week boating holiday. The St. Lawrence River is one of the most important rivers on the North American continent. It begins in the Great Lakes, leading to as vast estuary before ending in the Atlantic Ocean. It is approximately 500 miles long, and forms the border between Canada and the USA for approximately 100 miles. Sail up the St. Lawrence canal on a tour into French Canada for spectacular northern scenery and wildlife such as Beluga whales.While on the topic of North American boating holiday destinations, let's not forget Lake Tahoe. This is a perenially popular tourist destination, and every American who has the chance should visit this unique lake at least once. There are Emerald Bay sightseeing cruises on the Tahoe Queen, and rides on the M.S. Dixie II paddlewheeler. There is also a 44-foot trimaran and 55-foot catamaran. Small family boats are available for private family rental. Lake Tahoe offers many upscale resorts and restaurants as well as historic tours.

Boat Loans - Enjoy the Privilege of Being a Boat Owner

Owning a boat of your own is a matter of privilege. You can explore the wonders of the sea with your own boat rather than renting a boat, which is available for a limited time span. What is stopping you from buying a boat of your own? Is it lack of sufficient funds in your account? If your answer is yes, then no need to worry any longer, boat loans are here to help you get your dream boat. Boat loans ,facilitate the UK residents with an opportunity to buy a boat of their choice. For some of you a boat may be a passion while for others it could be just a luxurious item. You can choose the boat that suits your personality and need from the variety of boats available in the market ranging from a powered speed boat to a narrow boat and a house boat to a smaller cruiser.If you have decided to take a boat loan you need to keep few points in consideration. First and the foremost thing you need to do is to decide which boat do you wish to buy and find out its price, this will help you in determining how much funds do you need. The next thing is to unearth how much money do you have which you can invest in purchasing the boat. Both these steps will help you in finding how much money do you exactly need to borrow with a boat loan. Lenders in the UK offer boat loans ranging from 10,000 to 10,000,000. Thus, you can design your budget accordingly. The best thing about boat loans is that they get approved easily and quickly. Boat loans are usually offered for a term of 5 to 25 years. The amount you can get with a boat loan depends on your credit history as well as your repayment capability.There are two types of boat loans available in the loan market secured and unsecured boat loan. Secured boat loan requires a borrower to put some kind of collateral to become eligible for the loan. Tenants can apply for an unsecured boat loan, which does not require a borrower to put a security against the loan. In the same way, homeowners who wish to protect their home from the risk of repossession too can apply for an unsecured boat loan. Boat loans are offered at both fixed as well as variable rate. In case of a fixed rate loan, you will have to pay fixed sum of money every month, this loan option will help you in accommodating your budget each month. On the other hand, in variable rate loan or adjustable rate loan the interest rate fluctuates with market interest rate. This interest rate loan option will allow you to take advantage of the falling market interest rate. You can choose the interest rate option as per your Do take into consideration the various fees associated with the boat loan that sometime results in a low cost seeming loan turning out to be costly. A boat loan may accounts for fees such as underwriting fees, processing fees, cost of credit report, and other related costs. Make sure to consider all the cost involved which will help you in deciding which loan option is best suited to your needs.When you reach out in the market to find the best boat loan there will be enormous number of lenders offering you great loan deals. Now, you have to decide whether want to undergo the lengthy stressful loan process or a fast, easy and cheap loan. Majority of you will opt for second option as everyone wish to save his or her valuable time and money. Online lenders aim to provide you with the comfort of getting a cheap and fast boat loan arranged.It is easy to apply for a boat loan; you just need to fill in an online loan application form with some of your personal and financial information. Lenders will get back to you with the loan deals they find appropriate for you. Dont accept the very first loan deal you get. Search around, collect loan quotes from lenders and compare them to find the loan deal that you find to be perfect matching your needs and desires to the best.Exploring the wonders of the sea with a boat of your own, this may be a dream come true for some of you. Dont let this dream fade away. Borrow a boat loan and get the finance you need to finance your dream boat.

Boat Owners Intend To Sail On Despite Gas Prices

Boat owners say high gas prices won't sink their plans this summer. However, according to a new survey, higher prices will have them easing off the throttle more often.Like other motorists, boat enthusiasts are caught in the wake of high fuel prices-especially those who pay a premium to gas up at marinas. But many boat owners indicate they are willing to "pay to play," saying gas prices would have to nearly double before they change their lifestyle.The survey, conducted by The Brandware Group, Inc. for Nationwide Mutual Insurance, indicated that two-thirds of boat owners reported high fuel prices would not cause them to use their boats less often. In fact, boat owners are willing to pay about $2.70 more per gallon for fuel before they will consider docking their boats."When talking with our customers about boating we learned that while they're concerned about rising fuel prices, the passion they have for their boats overrides those concerns," said Greg Blanchard, Nationwide's vice president of Specialty Products.The survey also showed boat owners intended to be on the water just as often as last summer-about 20 times-but expect to run their engines about 25 minutes less per trip. The sailors surveyed said they spend 28 percent of their total leisure time on the water. Experts say that with high fuel costs putting a strain on boat owners' wallets, boat owners should make sure they have the right protection against the unexpected so they don't get hit with burdensome repair or replacement costs. "Protecting your investments by making sure they are insured to value is an important step in protecting your lifestyle," said Blanchard. "The money crunch really hits home if something happens and you don't have adequate insurance to repair or replace your baby." According to the survey, one in five power boat owners and one in three bass boat owners do not have insurance on their boat. Of those with insurance, about 35 percent don't have liability coverage. About 40 percent of power boat owners and 53 percent of bass boat owners don't have collision coverage. About one in five power boat owners and a quarter of all bass boat owners would rather take their chances than pay to fully insure their boats.

Summary

A look at the various Marine Electronics on the market. What they do and how they work.