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Turn Off Your Radar

April 15, 2022 By InTheBite Digital Editor

boat radar

By Captain Scott “Fraz” Murie

I’ve been approached several times recently about frustrated captains who say, “I’ve got something for you to write about in your next two-minute warning column.” Their frustration is real. Their complaint is a valid one.

And it concerns radars. It seems that everyone who owns a boat these days has a radar. From the cruisers and bay boats, monkey boats to the motor yachts and mega sportfish boats. A lot of the bigger boats have two radars. It’s a valuable tool for safety and fishing but it seems that everyone with a radar turns it on as soon as they’re leaving the dock, then they leave it on 24/7.

[Read more…]

Filed Under: Featured Stories, Fishing Tagged With: boat radar, Offshore Fishing, oil rig, Radar, sportfishing

New Garmin Open-Array Marine Radars Offer 250W of Pulse Compression Power

September 8, 2020 By InTheBite Editor

[Read more…]

Filed Under: News, Press Releases Tagged With: Garmin, gmr fantom radar, marine radar, Radar

Furuno Presenting Live Demonstration of Three All-New MFDs

May 26, 2020 By InTheBite Editor

Furuno — We’re excited to invite you to join us for our very first LIVE Webinar, specifically designed for boaters looking to add the most powerful MFD series to their helm. In this webinar, we’ll highlight the key features and extensive capabilities of the all-new NavNet TZtouch3 series.

The webinar platform provides the perfect setting to showcase our latest products in an environment that is engaging and informative, while following social distancing guidelines. This webinar will be held on Friday, May 29th at 9:00AM PDT.

We’ll not only provide you with a comprehensive overview of the TZtouch3 MFDs and new sensors, like high-power NXT Radars, “Deep Impact” CHIRP Amplifier, and the amazing SCX Satellite Compasses, but you’ll also experience a LIVE demonstration of the tremendously simplified and lightning-fast user interface that makes TZtouch3 the easi est to use MFD on the market! Furuno’s Senior Product Manager,

Eric Kunz, will be your Power Trip Tour Guide, answering any questions you may have along the way. Register today to reserve your spot and we’ll look forward to seeing you on the 29th!

Furuno USA, Inc.

Filed Under: Electronics, Equipment, Featured Stories, General News, News, Press Releases Tagged With: furuno, mfds, navnet, Radar, satellie compasses, webinar

FLIR Introduces Next Generation Raymarine VHF Radios

November 28, 2018 By InTheBite Editor

The latest in trouble-free radio solutions for any vessel

WILSONVILLE, ORE. (November 27, 2018) – FLIR is excited to announce the launch of its next-generation. The compact Ray53, full-sized Ray63 and the multifunction Ray73 with AIS are all full-function VHF marine radios with Class D Digital Selective Calling (DSC).

Each new VHF model is equipped with a built-in GPS receiver and connection point for an optional GPS/GNSS antenna, which improves the GPS reception when the radio is mounted below deck or in an enclosed pilothouse. Designed to complement the modern style of Raymarine Axiom multifunction displays, these new VHF radios look great trunnion or surface mounted on any helm.

Additionally, Ray63 and Ray73 can connect to Raymarine’s new wireless VHF hub and can support up to two wireless handset stations for wireless communication anywhere onboard.

Ray53 Compact VHF Radio with GPS

Raymarine’s Ray53 radio is small in size but big on features and performance. Ray53 is a full-function VHF marine radio with Class D Digital Selective Calling (DSC) and a built-in GPS receiver. Simply program your boat’s MMSI number into the Ray53 and immediately benefit from the enhanced calling and safety features of DSC. The Ray53 supports both NMEA2000 and legacy NMEA0183 networking, which enables it to connect with other onboard electronics. Ray53 also supports the connection of an optional remote speaker to provide audio at a second location.

MSRP: $499.99 (US)

Ray63 Multi-Station VHF Radio with GPS

Raymarine’s Ray63 is a full-function VHF marine radio with Class D Digital Selective Calling (DSC) and a built-in GPS receiver. Built on a full-sized radio chassis, the Ray63 features oversized controls and a larger LCD for easy operation offshore. The Ray63 also supports multi-station expansion and intercom capability via a single wired RayMiccontroller or two wireless RayMic controllers.

The wired RayMic 2nd station kit allows full operation of the Ray63 from another location onboard. Ray63 also works with Raymarine’s new wireless RayMic wireless hub and handset system, which adds control at up to two additional locations onboard the boat with wireless convenience.

MSRP: $599.99 (US)

Ray73 Multifunction VHF Radio with GPS, AIS and Loudhailer Output

Raymarine’s new Ray73 multifunction VHF is communications central for your boat. In addition to the features of the Ray63, Ray73 adds a built-in Automatic Identification System (AIS) receiver and a powerful loudhailer output. Ray73’s AIS provides collision avoidance and identification details for nearby AIS-equipped vessels to a networked multifunction display, chartplotter, radar and instruments. When combined with an optional hailing horn, the Ray73’s loudhailer output allows communication with crewmembers on deck, those on other vessels, or people on the dock. In addition to Ray73’s powerful public-address capability, it can also generate manual or automatic fog signals when moored or underway.

MSRP: $899.99 (US)

The new Raymarine VHF line is available now through FLIR’s network of Raymarine dealers. and retailers.

Filed Under: Featured Stories, General News, News Tagged With: boat electronics, boating, charplotter, FLIR, gps, helm, InTheBite, magazine, offshore, Radar, radio, ray53, ray63, ray73, Raymarine, Raymarine VHF radios, sportfishing, VHF line, yachts

Finding Birds: Is The Latest Radar Technology Right For You?

June 7, 2017 By InTheBite Contributor

High resolution March issue article here

By Steve Katz

Recently I visited a 68’ sportfish. The vessel had received many helm upgrades. The control station was a beautiful helm with four large flush-mounted glass style monitors. Upon powering on the system, I witnessed a modern GPS chart plotter in high definition. In contrast, I also found a blurry radar image from a system introduced over 10-years ago that had been adapted (not well) to work with the new screens.

Since it appeared that cost was not an issue, I asked how this happened. The captain explained that the previous captain was familiar with the old radar and knew how to use it. He therefore demanded it remain during the electronics upgrade. It seems the prior captain didn’t want to learn a new radar system! There are many captains and owners who prefer to keep using the hardware they know. That said, the advantages to using modern electronics are worth the effort to take the time to learn!

Radar Basics: Applications

Let’s review why we use marine radar:

  • Collision avoidance is the number one feature of marine radar. An educated radar user can use the displayed radar image to avoid a collision with land, other fixed objects and other vessels at sea. This use of radar is not just for nighttime use, it can be used anytime and can help locate and identify targets.
  • Regulatory compliance. The international COLREGS and the USCG Navigation rules (small white book) both require the use of “all available means” –including radar if equipped– to determine if a risk of collision exists.  
  • Radar can be used for passenger safety to help identify threats or uninvited vessels approaching or traveling nearby.
  • Radar can be used to locate distant storms and help provide the captain with information necessary to safely navigate through or around a storm.
  • Radar can help measure distances to other objects such as land masses, aids to navigation, other ships, and storms. Radar can also confirm the ship’s location against a chart plotter display.
  • Ship’s radar can signal a radar beacon (racon). When triggered, a racon transmits information back to the ship’s radar display about the racon feature. Often this information can be used as a navigation aid to identify a landmark or buoy.
  • Radar can activate SART (Search And Rescue Transponder). SART devices are used to locate a survival craft or distressed vessel by displaying a series of dots on a rescuing ship’s radar display.
  • Most importantly for ITB readers, RADAR CAN FIND BIRDS!! (We are looking for birds since birds may congregate near the same baitfish that are part of the gamefish diet.)

A Radar Overview

Before we get into the fun stuff on finding birds with radar, let’s review ARPA and MARPA, echo trails, VRM and EBL, magnetrons and solid state radar.

 

ARPA–automatic radar plotting aid– is a feature of commercial radar systems where the radar system automatically acquires and tracks targets (other boats) near the vessel to aid in collision avoidance. The ARPA system reports the other vessel’s range, bearing, target speed, target direction (course), CPA (closest point of approach), and TCPA (time of closest point of approach), safe or dangerous indication, and often includes a proximity alarm. Larger boats and commercial ships are required by IMO (International Maritime Organization) and other standards to have and use the ARPA feature on their radar. While the ARPA feature is found on commercial radars, Furuno offers it on many of its recreational radar packages as well.

 

MARPA— Mini Automatic Radar Plotting Aid—is very similar to ARPA but includes fewer features. MARPA is currently found on most of the recreational radars. The major difference is that with MARPA, targets need to be manually selected and often a smaller number of targets can be tracked simultaneously. Note, for MARPA (or ARPA) to function accurately, a heading sensor is required. On a pleasure boat, often the heading sensor from an existing autopilot may be integrated. If not, a stand-alone heading sensor may be required.

 

The ARPA/MARPA feature is often underused by pleasure boaters. It is a great feature to use to enhance your situational awareness, especially when traveling or operating in any kind of restricted visibility. If not familiar with this feature, try it out on a clear day when you have time to experiment at the helm. Learn how to set your system up to acquire targets and see how the system alarms you when a target gets too close.

 

Echo trails

Echo trails are a safety feature which provide colored historical “trails” behind a target vessel. These trails are shown on the screen in a different color to help you quickly and easily identify moving targets and potential collision threats. The trails provide a visual depiction of the vessel’s course.

 

VRM and EBL

Variable range markers (VRM) and electronic bearing lines (EBL) allow you to move the radar display cursor over a vessel or point of interest to view the instantaneous measurement of distance and bearing to vessels or land.

 

Magnetrons

We all hear about the magnetron inside the traditional marine radar but what does it do and why worry about transmits hours? A magnetron generates the radio pulses (radar energy) that are sent out from the marine radar antenna. After thousands of hours, the magnetron’s performance can be diminished. It is usually a slow degradation, starting with symptoms of reduced ability to acquire distant targets.  If this happens, the radar’s magnetron can be replaced to restore the radar’s original performance. The design and technology behind the magnetron radar dates back to the 1940s military use. It wasn’t until the 1980s that radar became affordable for pleasure boats.

 

The Latest in Radar Technology

Recently, a new radar design has been made available to pleasure boats. Known as Solid State, Doppler, CHIRP or FMCW radar these new radars do not operate with magnetrons.  Each of the major manufactures has their own name for the solid state technology radar—names include the Furuno NXT, Garmin Fathom, Navico Halo and Navico broadband 3G/4G and Raymarine Quantum. Most manufacturers offer this technology in both open array and dome styles.

The new solid state radar systems offer some advantages. These include:

  • From a maintenance and service issue – there is no magnetron to replace and no performance decrease as the radar operational hour’s increase.
  • Great short range performance – some of these systems can show fine details such as finger piers inside a busy marina while 20 feet away.
  • The radar is instant on, no warm up time before transmission.
  • Low RF (radio frequency) emissions, safer for humans in the transmission beam.
  • Solid state radar systems can indicate whether a target is moving toward or away your vessel using Doppler with programs such as Furuno’s “Target Analyzer” and Garmin’s “MotionScope.”

There are also a number of drawbacks to the new system. These include:

  • Long range performance may not be as good as with a magnetron.
  • Solid State systems are not as good at finding and tracking birds as magnetron style radar.

The continuous development of solid state hardware and software should eventually allow these modern radars to exceed all performance aspects of magnetron radars for pleasure boat use.

Finally… How to Find the Birds

Using your radar to find birds is very useful when fishing. Long time captains can tell you they can easily manually tune their radars to find birds. Some newer radar users rely on the automated settings, often called “bird mode” by the manufacturers.  Whichever method you choose, finding birds requires the ability to increase the gain and reduce the clutter of the controls.

For manual users, set your range to medium or long. Next, increase the gain until you flood the screen with blanket of small specs, then back off the gain just a bit. Leave the AC rain and AC sea clutter off. Flocks of birds will look like dense reoccurring noise and not a solid target.  It is best to practice this when you can visually see the birds and compare what you see to what the radar shows. It can take some practice adjusting your range, gain and clutters to get a picture that defines the birds. Your radar power, antenna style, mounting location, screen resolution and other factors can influence the settings and ability of a specific set-up to effectively see birds at a useful range.

If your radar has an automatic “bird mode” setting, it’s worth a try. This option is an easy way to get the settings quickly adjusted. According to the manufacturers, there is more to this feature than just a gain pre-set. There is also a software algorithm that works in the background to adjust the radar settings to best identify birds.

The best type of radar to find distant birds is a large high power open array– a 25kW with a 6’ array is the most typical radar found on tournament sportfish boats. Certainly less power and size will work, just not as good or as far. The narrow beam width of the open array and high transmission power is what allows the radar to pick up small fast-moving, distant targets such as birds.

Some captains have been able to easily tune and use modern solid state radar to target birds, even using the new dome style radar on smaller boats. The radar height off of the water and the bird’s height off the water are limiting factors to the distance birds (or any object) can be marked.

Conclusion

Whether using your radar in the darkness of night to find your way or to locate birds on the horizon during a tournament, your boat’s radar is one of the most important pieces of equipment on the bridge. Everyone uses marine radar in different ways. Just as there are a variety of uses for radar, there are many different skill levels of radar users. What is universal, however, is that there are some important safety and fishing features of radar that all captains should know about. Take the time to learn your system and keep it in operating performance.

 

 

Filed Under: Featured Stories, General News, News Tagged With: Finding Birds, Fishing Technology, InTheBite, Radar, sportfishing, Using Radar

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