Marine Electronics: The use of marine radar
Marine Radar (Radio Detection and Ranging) is used to detect objects and their position relative to its location. It works by sending a radio signal. When the signal reaches an object that is reflected back to the radar unit can then calculate the bearing of the object.
A marine radar device is an essential navigational aid for mariners. It is useful for ship detection, masses of birds, and climate systems, even when visibility conditions are less favorable.
Navy radar: Features to look for
The two features important part of any marine radar device is the transmitter power and beam angle. Power can range from 2 to 4 kW. The higher the power, the better your transmitter can see through fog and rain and further the signal can reach. Power is a factor in how your radar in bad weather. Blinding rain can cause low energy marine radar to be less than effective.
beam angle is determined by the size of the radar antenna of its navy. Ultimately produce an antenna a narrow beam that gives good discrimination between objects close together. A short antenna has a wider beam angle that allows the radar to scan an area while larger. The antennas are usually customizable or configurable and may be purchased separately.
Guard Zone Alarm
Most marine radar allows you to establish a protection zone around the ship. It specifies the safety distance and set an alarm. If your vessel detected a buoy, land mass or other obstacle in the vicinity of guard zone, the alarm sounds.
Split Screen Displays
Split appears screen allow you to control your boat near objects and distant objects at the same time. This function is useful, inter alia, to navigate the buoys leaving coast line while leaving for a more distant.
Better use of marine radar
One of the best features of marine radar is its ability to determine where they are compared to where it was a few minutes ago. This "path echo" feature can be used to determine how well moves through an obstacle, as well as rather than having to maintain established for your boat. The echo path is shown on the radar screen so you can visually check what is happening.
Integrated marine radar and GPS / Chartplotters
marine radars are quite expensive, many units run in the thousands of dollars. It's a good idea to talk to other boaters and see what they are using and what features they like before committing that much money. To get more for your money, look for marine radars have already been incorporated into other marine electronic devices such as GPS units and Plotters. Integration of marine components reduces the complexity of visual displays and reduces total cost of items. Although sometimes you have to compromise with the characteristics of each component are given in the integrated package, consisting of marine radars offer good value for amateur sailors.
Follow other ships marine radar systems
Whether you are at sea on a sailing holiday break, participating in a commercial fishing trip hundreds of miles offshore, or performance of goods from one place to another, do not lose sight of other objects such as other boats and larger vessels in the area is essential if we are to maximize their safety in the water. Using one of the next-generation maritime radar systems, can to take advantage of a number of technologies that track other vessels easier than ever, and even mark their positions and routes on the screen.
The sea can be a cruel mistress, and a change in conditions can appear almost instantly. A minute can be slid along almost over calm waters, the following can lower the fog obscuring the world around you, and you may be fighting hundred-foot waves and strong winds.
This ever-changing nature of the ocean means that as conditions change that may face different challenges that may affect their safety. The key to ensure it remains as safe as possible is to remove as many of the factors that can change the overall picture.
Other vessels are often the greatest threat to any sailor can face. smaller boats in particular are often not collected by the radar systems of large container ships and cruise, which can be very dangerous things. It is for all sailors to keep a check on water conditions around them to keep safe from other vessels.
Fortunately, even the fastest ships usually do not move more than about 25 knots, which means that if you have a radar that covers 50 nautical miles, which have approximately 30 minutes from the time first contact with another vessel until they would meet, which should give you enough time to react navigation and planning accordingly.
If the package together a satellite high speed with a radar screen format large, be able to get a very detailed picture of the events happening around them. An array of modern radar like the Furuno 1932MK2 you can enjoy a 10-inch screen that offers many possibilities to see what is happening. All Furuno range are well known for the high quality of its equipment, and regularly updated range features the latest technology and is always at the forefront of marine radar systems.
One of the best things in modern systems like Furuno marine radar is to plot the position other ships on time. Instead of being just short on the screen points to convey little information, other vessels appear as a track through the area. Their movements are shown in clear detail, allowing you to easily measure other vessels pose a threat to you and take appropriate action.
When you are at sea and out of sight of land, safety should always be your priority, so instead of going out of their own security to the actions of others, can maintain safer yourself for having a marine radar system that works, and make course corrections based on current information it provides.
By learning to read information provided by marine radar system, you can make informed decisions about how to navigate, to avoid more trouble at sea. Know what you are about and what is going beyond its visual range will allow you to be confident they are safe, and also able to react timely to everything that happens in the case time system, a super tank, or even a wave ..
It is important to know what they are doing other vessels, but it is also important to control about what you are doing. By tracking their progress across the ocean, and taking the time to do the same with other vessels using a tracer marine radar as the Furuno 1932MK2, which has a 10-inch screen, you will be able to protect your boat, crew and passengers of the most effective way possible.
Instructions
Things you need:
- Instruction Manual for radar unit
Step 1
Adjust the radar range rings. Usually this is accomplished with a switch or dial on the unit, most units can be adjusted to cover a range of 1 / 4 of mile over 48 miles. The most useful setting for 4 to 6 miles for a small boat in open water and 1 to 2 miles (or less) in lakes or rivers. intervals Shorts provide a more immediate situation around a ship in close quarters.
Step 2
Use the marker variable ring, or VRM, to determine the distance to a particular objective, such as the mouth of a river, a sea buoy marking a channel input or a boat. The VRM is like a standard ring range, but can be adjusted by a control (usually a button) on the radar screen so you can be "transferred" to a target. The indication VRM distance display the exact distance to the goal.
Step 3
Use the Electronic Bearing Line (EBL) to determine the relative direction accurate to a target. The EBL, as well as the VRM, is set by a button on the screen, allowing the EBL to be transferred to a destination and to show the exact path under the direction of motion of your boat.
Step 4
Use the EBL and VRM together to determine if a target is moving toward you in a situation of "crossover" that require action. Put the VRM and EBL in the target, but that cross at the target location. If the range decreases, but the relative address is not the case, the target is a glass and a crossing situation developing. If you decrease the range and relative direction changes, a situation junction is unlikely, but the prudent mariner will maintain attentive to the unexpected.
Step 5
Always trust your eyes before relying on radar. Maritime law, the Rules of the route for inland navigation and the Regulations for Preventing Collisions at Sea, ignoring the radar, except as a navigational aid, and then insist that decisions based on radar observations to be confirmed visually. The ultimate responsibility for safe navigation rests with the teacher, not the radar, and numerous court cases cited in the regulation stating this fact.
The Coast Guard broadcast time on radio for your boat can warn of impending "bad weather", but follow the progress of an approaching storm on the radar of your boat allows you to take significant action early enough to avoid damage to property and loss of life that a storm water can bring. Even after the main port, if it stays on board your boat (assuming the boat has a weather proof cabin), can track the storm with his radar unit, the storm should blow either abandon their activities or enjoy the calm sea below.
Difficulty: Moderate
Instructions
Things You'll Need:
- Chronograph
- Calculator
Step 1
Changing the scope of his radar to 48 nautical miles, when you realize the storm visual or radio. At 48 miles, the radar does not detect anything below 1200 feet, so you can find most of the storm. Once you have determined the size general of the storm, reducing the scope of his radar until the edge of the storm is visible.
Step 2
Turn the "VRM" command on your radar set the variable radar marker ring at the edge of the storm. Opens a single ring can be moved over. Its range will be displayed in a corner of the screen. Please account the range on the edge of the storm.
Step 3
Start the timer to a count of three minutes and takes into account the range of the variable ring mark. If the storm enters the area in less than three minutes, stop the clock and reduce the range of the VRM until the line touches the edge of the storm. Note The brand new range of variable ring.
Step 4
Subtract the new range of original range of the storm, which is how much the storm traveled in the time recorded by the stopwatch. For example, 12.5 miles (original range) – 10.2 miles (new series) = 2.3 miles. If the storm took 2.5 minutes to go 2.3 miles, and distance traveled divided by time and multiply the result by 60. For example, 2.3 (distance traveled) / 2.5 (the time it took to the storm to travel the distance) = 0.92. Multiply the result by 60 to determine the relative speed (the speed of the storm on their boat) of the storm. In this example, 0.92 x 60 = 55.2 miles per hour.
Step 5
Note the apparent direction of storm movement, in relation to the course, on your radar turning the knob marked "EBL" or electronic course line until the EBL parallel to the course of the storm. Consider the delay indicated (also the corner of the screen, similar to the VRM). This is the address on the storm.
Step 6
Subtract the relative direction of the storm (the EBL bearing) of its course with the calculator. If the course is 245 degrees, and electronic guidance line shows the course of the storm and parallel fixed EBL 290 degrees, then 245-290 = -45. Add this to your progress to determine the true course of the storm. In this example, 245 + (-45) = 200 degrees.
Read more: Using Navy radar storm tracking | http://www.ehow.com/how_5872005_use-marine-radar-storm-tracking.html # ixzz0w1bV0k3G eHow.com
About the Author
Want to learn more about top-quality marine electronics? MarineWholesales.com has all the leading brands of discount marine electronics for yachting, boating and fishing.
Sarah B. – Furuno NavNet 3D – Hines Marine Services Ltd.
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