Why the AIT2000 is your best choice for an AIS Class B Transponder

We would all like to claim we make the best products with the best performance and features (and of course we do!) but with a highly regulated product like a Class B AIS transponder, all manufacturer’s have to meet a strict specification and performance curve laid down in international standards. However, it’s the little extras and features that we’ve considered and designed into our value priced AIT2000 that make it your best choice. Here are just some reasons why…


All Class B AS transponders require their own internal GPS and associated antenna. We supply the AIT2000 with a compact antenna with an industry standard 1″ threaded base for mounting onto standard pole, deck or rail mounts. What’s more we’ve designed the cable to either exit from the side of the antenna or through the base and it can even be “puck” mounted if required. The 10m cable is terminated with a FME style connector which means you don’t need to drill large holes through the boat to run the cable to the transponder and of course, we supply an adaptor to fit the transponder’s TNC GPS input. Easy!


We designed our AIT2000 to be compatible with any AIS ready device so we’ve included multiple NMEA0183 interfaces, NMEA2000 and USB connections as standard. In addition, all three sets of cables are supplied with the device ready to plug ‘n play into any installation. We’ve also added a 2nd NMEA 0183 output with GPS data at 4800 baud which can be used to feed a DSC VHF. There’s also a NMEA input and built in multiplexer so instrument and AIS data can be aggregated into one output


You may want to silence your transponder but still receive AIS information and we’ve made that easy with two extra cables in the harness which can be connected to either a simple push button or toggle switch. Nice! The four status LEDs on the AIT2000 can show the status of the unit and full internal diagnostics mean that if you’re GREEN, you’re good to go and the whole system has self checked and even verified the VHF transmission.


Our proAIS2 programming and diagnostics software works with PC and MAC and allows the transponder to be programmed at home* without connection to a DC power supply utilizing just the USB connection. What’s more, we include our SmarterTrack Lite AIS viewing software for a PC (Windows XP, 7, Vista and 8 compatible) so you can use your PC for AIS monitoring – or upgrade to SmarterTrack for full charting and routing capability at the chart table without the need for a 2nd expensive plotter display or expensive australian cialis. For a permanent PC connection, we’d recommend utilizing our USB-NMEA adaptor for compatibility across a wide range of charting and navigation programs.

GV30 Combo GPS-VHF Antenna – The Perfect Class B AIS Transponder Antenna Solution

Many users are put off installing a Class B AIS transponder because of the requirement for additional antennas on their space strapped pushpit rail or radar arch.

A Class B AIS transponder must have its own internal (built in) dedicated GPS receiver so this requires a dedicated antenna. It also needs a dedicated VHF antenna (ideally tuned to 162MHz) or connection to a specialist VHF-AIS antenna splitter if you want to share the main VHF antenna with the AIS and VHF. Our SPL2000 splitter is a great choice here but this technology is relatively expensive.

Digital Yacht now have a great new solution – the compact GV30 combination GPS and VHF antenna, tuned specifically for 162MHz AIS frequencies. Physically its around 75mm in diameter and has a compact helical stub antenna fitted to the top. Two (10m) cables exit the unit (for GPS and AIS) with low profile connectors to make running the cable through the boat easy. Adaptors are supplied for connection direct to our AIT2000 transponder. Despite the compact stub antenna, performance is actually very good and it makes for a rapid installation. Of course, range is slightly limited (typically 5-8 NM) but range isn’t everything – actually too much range can cause too many targets to be received and overcrowd the plotter display!

Note that the GV30 is shown here fitted to a 1″ standard deck base (stainless steel) which isn’t supplied. The GV30 has the industry standard 1″ female thread to fit a wide variety of 3rd party rail, deck and pole adaptors.

It will of course work with other AIS transponders but there’s some good reasons here to choose our brilliant AIT2000 Class B transponder

Attention Simrad and Simrad Pro Customer

Attention Simrad and Simrad Pro Customer,

To access our latest Sales and Technical Bulletins announcing the Simrad Optimization SW Suite Release, Simrad NSS evo2 RTM 3.5, Simrad NSO evo2 RTM 4.5, Simrad GO7 RTM 2.0, Simrad HALO R12 UPD 5.2.18 and Simrad BSM-2 BSM-3 UPD 3.6.0 click the links below:

SB-219 Simrad Optimization SW Suite Release_December_2015.pdf
TB-149 Simrad NSS_evo2_RTM_3.5.pdf
TB-150 Simrad NSO_evo2_RTM_4.5.pdf
TB-151 Simrad GO7_RTM_2.0.pdf
TB-152 Simrad HALO_R12_UPD_5.2.18.pdf
TB-153 Simrad BSM-2_BSM-3_UPD_3.6.0.pdf

For more information, please call or email using the information below!
• U.S. Based Resellers Technical and Order Support: (800) 324-4737
• Canada Based Resellers Technical Support: (855) 361-1564
• OEM/Boatbuilder – oem-bb@navico.com
• International/Latin America – international@navico.com
• National Retail – retail@navico.com
• Dealers/Distributors – orders@navico.com

*Please use the email address that reflects your sales-group classification.


Lowrance®, a world-leading brand in fishing electronics since 1957, announced today the release of a game-changing, sonar-imaging system – Lowrance StructureScan® 3D.

Lowrance StructureScan 3D allows anglers to easily see fish, underwater structure and bottom contours in a stunning three-dimensional display on their HDS Gen3 fishfinder/chartplotter. StructureScan 3D imaging quickly scans underwater terrain and fish-holding structure to create high-resolution, 180-degree super-wide, three-dimensional views – in depths to 300 feet and as far as 600 feet port and starboard. Yielding captivating images with unprecedented detail, StructureScan 3D gives anglers a better understanding of where fish and structure are located in relation to their boat. The true-to-life 3D scans are viewed on the Lowrance HDS Gen3 display, when used in combination with the SideScan 3D Skimmer® transducer and StructureScan 3D module – making HDS Gen3 the ultimate fishfinder.

StructureScan 3D sonar provides multiple viewing options including boosted DownScan Imaging™, even more detailed StructureScan HD and the new revolutionary three-dimensional views. Using virtual point-of-view angles or ScanTrack™ pan-tilt-rotate control, anglers can combine custom HD and 3D views to increase situational awareness and search fishing areas as never before.

In addition to outstanding crystal-clear imaging, StructureScan 3D has exclusive features that make finding fish even easier including:

Leading Edge™ scanning reference provides a clear graphical illustration of the sonar beams as they intersect with the bottom contours and gives the angler a better sense of target depth.

SelectScan™ water column target coloring automatically shades fish-holding cover and suspended targets in a color that contrasts the selected color palette, making target identification quicker and easier than ever before.

Vertical Depth Enhancement provides emphasis to vertical drops and crucial depth contour changes making them easier to identify relative to the surrounding underwater terrain.

3D Waypoint Overlay makes it easy to revisit fishing areas, structure and other underwater sweet spots. Use the waypoint keypad to save a waypoint at the boat location or switch to cursor mode and save a waypoint over specific targets, baitfish schools or cover.

“With StructureScan 3D, anglers can search for fish and underwater structure like never before,” said Leif Ottosson, CEO and president, Navico. “With the addition of StructureScan 3D to our HDS Gen3 range, we will change the way people fish. Giving anglers a unique three-dimensional view of fish, structure and contours maximizes anglers time on the water and keeps them in the strike zone.”

Scheduled for availability on or before December 2015, Lowrance StructureScan 3D can be purchased from authorized Lowrance dealers and distributors throughout the United States and Canada and is priced at $999 for the module and Skimmer transducer kit. For more information about StructureScan 3D, the HDS Gen3 or the entire line of Lowrance marine electronics, or to locate an authorized Lowrance dealer, please visit www.lowrance.com.

Lowrance® Announces Software Update Bringing New Functionality to HDS Gen2 Touch And HDS Gen3 Multifunction Displays

Lowrance®, a world-leading brand in fishing electronics since 1957, announced today the release of new software updates for the award-winning Lowrance High Definition System (HDS) Gen2 Touch and HDS Gen3 multifunction displays. The newest releases are version 4.5 for HDS Gen2 Touch and version 2.0 for the HDS Gen3. They provide users with greatly anticipated features including Outboard Pilot control, C-MAP MAX-N+ 2015 compatibility and Power-Pole® integration.

Bringing new functionality to HDS Gen3 users, the updated software leverages the power of built-in Bluetooth® wireless technology to allow for control of Power-Pole shallow-water anchors, as well as the all-electric MICRO Anchor products. These devices quickly and quietly anchor fishing boats and kayaks with an easy to use touchscreen control on the Lowrance HDS display – wirelessly engaging the anchor and saving precious minutes.

For both HDS Gen2 Touch and HDS Gen3 displays, the updates also enable control of the Lowrance Outboard Pilot via the Lowrance SmartSteer™ interface; support for Jeppesen® C-MAP MAX-N+ 2015 cartography with the most current detailed marina charts; and custom contour shading, composition and vegetation layer shading for Insight Genesis™ Premium account users. Mercury VesselView® and Mercury SmartCraft® integration improvements for Smart Tow® are also included in the updates.

The Lowrance Outboard Pilot is an HDS autopilot add-on system designed for boats up to 30 feet and contains everything needed to fit an autopilot to a hydraulic- or cable-steer single outboard motor. The SmartSteer interface provides intuitive control and can steer on a set heading, to a waypoint or along a route.

C-MAP MAX-N+ 2015 cartography can now be used on HDS Gen2 Touch and Gen3 displays, offering enhanced situational awareness, with a variety of presentation options, for a custom look and feel. Charts can be displayed in different imagery styles, including:

Shaded Relief – a three-dimensional view that brings seabed terrain to life
No Contours – removes contour lines from the chart to minimize clutter
Raster – gives the chart the look of a traditional paper chart
High Resolution Bathymetric – provides a higher concentration of contour lines for greater depth detail

A new Photo Overlay feature allows users to view satellite photo images of selected areas as an overlay on the chart. Users can view the overlays in either 2D or 3D modes. These photos provide a “bird’s eye” view of marinas, harbors and channel entrances, giving boaters valuable detail, as well as important information for tournament fisherman and other traveling anglers. Additional sport fishing overlays include: color fish ID photos, localized sport fishing rules/regulations, and state angling records – all putting important regional knowledge at every angler’s fingertips.

“We are constantly looking for ways our customers can get more out of our already feature-packed systems,” said Leif Ottosson, CEO and president, Navico. “With this new update and the addition of features like Outboard Pilot and C-MAP MAX-N+ 2015 cartography, the already robust capabilities of the HDS Gen2 Touch and HDS Gen3 are enhanced to make it even easier for anglers to get out on the water.”

Lowrance Anglers Dominate 2015 Bassmaster Classic

Lowrance — a world-leading brand in fishing electronics since 1957 — once again confirmed its No.1 position among America’s fishing-tournament professionals, following Lowrance Pro Casey Ashley’s 2015 Bassmaster® Classic Championship performance. In the three-day event held on Lake Hartwell, South Carolina last weekend, Ashley boated a five-fish limit each day for a total weight of 50.1 pounds to win the $300,000 top prize – nearly 4 pounds ahead of the second-place finisher.

In addition to Ashley’s championship, six other top 10 finishers were Lowrance Pro Team Anglers, and 16 of the top 25 also used Lowrance fishfinder/chartplotters. In the 56-competitor field, nearly 65 percent used Lowrance electronics, and this was the fourth consecutive year in which a Lowrance angler won the Bassmaster Classic.

Casey used a set of HDS-12 Gen2 Touch fishfinder/chartplotters, supported with mapping solutions provided by Insight Genesis™ to identify underwater ditches that held the majority of bass he located to win the Classic. Ashley said the key to finding active fish that would bite in the frigid waters of Lake Hartwell was watching them closely on his Lowrance HDS Gen2 Touch fishfinder display.

“I caught them all deep,” Ashley said, “and I completely relied on my Lowrance electronics to make it happen. I could literally watch the fish come out of the ditches and onto the flat areas. The fish were holding right on the bottom, but as soon as I started to see fish move off the bottom, I would start getting bites. The key was marking fish that were slowly moving off the bottom as I passed over, then making a cast right back into those areas.”

Garmin GHP Reactor Service Alert

Garmin has recently discovered a software issue on GHP Reactor autopilots. This issue may cause the autopilot to perform poorly, up to and including making the unit inoperative. In rare circumstances, the autopilot may behave unexpectedly, possibly performing abrupt maneuvers, although no such behavior related to this issue has been reported from installed systems.

Affected Products
GHP Reactor Autopilot units (SKUs listed):

010-00705-15 GHP Reactor Hydraulic Autopilot Corepack
010-00705-45 GHP Reactor Mechanical Autopilot Retrofit Corepack
010-00705-65 GHP Reactor Hydraulic with SmartPump Corepack
010-00705-71 GHP Reactor Hydraulic Autopilot Corepack for SmartPump
010-00705-80 GHP Reactor Steer-by-wire Standard Corepack
010-00705-81 GHP Reactor Steer-by-wire Corepack for Yamaha® Helm Master™
010-00705-82 GHP Reactor Steer-by-wire Corepack for Viking® VIPER®
010-00705-85 GHP Reactor Steer-by-wire Corepack for Volvo-Penta®
010-11052-60 Course Computer Unit, GHP Reactor Steer-by-wire
010-11052-61 Course Computer Unit, GHP Reactor Steer-by-wire for VIPER
010-11052-62 Course Computer Unit, GHP Reactor
010-11052-63 Course Computer Unit, GHP Reactor for Volvo-Penta
Note: The GHP Reactor model is shown on the NMEA 2000® devices settings menu on a connected GHC™ or GPSMAP® chartplotter.

A mandatory software update (v3.20) is currently available at no charge. This software update will correct possible performance issues and prevent the unit from becoming inoperative. Please update your GHP Reactor software as soon as possible, or bring your vessel to the dealer where you purchased your autopilot system for assistance with the software update. Your dealer was made aware of this update in Service Alert No. 1562.

As is best practice with any autopilot system, if any unexpected behavior occurs, disengage the GHP Reactor autopilot immediately. For installations in which a GPS device is used as the speed source, avoid using the autopilot in situations where there is a weak GPS signal.

To update the software, the GHP Reactor autopilot must be on a NMEA 2000 network connected to a Garmin GPSMAP with a card reader or to a NMEA 2000 Network Updater (010-11480-00).

Download the latest Marine Software Update Bundle for the GPSMAP Series with SD Card available on the Garmin website at www.garmin.com/support/software/marine.html. This update bundle contains the GHP Reactor v3.20 software update.

Download the software update to an SD card following the instructions on the download page.

Update the autopilot software following the directions in the GPSMAP chartplotter manual or the NMEA 2000 Network Updater manual. If needed, you can download the latest manual for your device at http://garmin.com/manuals.

After the update is complete, go to the NMEA 2000 Devices settings menu and verify that the GHP Reactor software is at v3.20.

Choosing the Right Engine Propeller

By Neil Mullen

Recent advantages in outboard technology have made choosing the correct propeller for your boat both easier and more difficult–easier because the number of choices has doubled, and harder, for the same reason. Propeller manufacturers have been busy developing new 3-blade and 4-blade products and size ranges of stainless steel propellers to meet a growing number of hull types and horsepower ranges, especially for 4-stroke engines.

Four-stroke engines are designed to run at very specific RPMs, so pitch sizes have become available in 1 inch increments and new designs have appeared, each more tailored to a specific hull type and application. Propellers with higher rake angles and some with more surface area have been developed to maximize the power delivery of the 4-stroke torque curve.


The two most important things to remember in choosing a propeller are that it meet your individual needs for your individual application and that it allow the engine(s) to run within the specified RPM range at full throttle. Each boater and fisherman is trying to meet his requirements, but they can vary a lot.

What’s important to you and the way you fish: Top Speed, Cruising Speed, Hole Shot, Load Carrying, Slow-Speed Handling, Slow Trolling, Fast Trolling? Two identical boats with identical engines could be propped quite differently, depending on the usage, water conditions, and load. There is no such thing as the best or ideal prop for all applications of a similar nature. Acceleration may be compromised for top speed and fuel economy, and visa versa. Often times, there may be 6 or 8 different props that seem to run about the same, with differences so subtle that any of them could be considered satisfactory by most standards. This just makes it that much harder to make a decision and choose the right prop.

The purpose of this article is not to explain propeller theory or hydrodynamics, but rather to point out the various options in the market place and set some common rules of thumb. It will confine itself to the discussion of 3 and 4 blade stainless steels props as these are the most common in the real world.

Three Blades or Four?

In general, 3- blade props are the most common. They are available in wide size ranges and cost less than 4-blades. They typically yield a slightly higher top end speed than 4-blades. They are available in a wider variety of designs and offer more left hand rotation pitch options for twin counter-rotating engine applications.

Four-blades have some features of their own, though. They often provide more lift at the stern which will help accelerate the hull, especially if it is stern heavy. They come out of the hole strong and work well for pulling skiers and water toys. In fishing and offshore boats, they are oftentimes slightly faster than 3-blades at mid-range rpm’s, where coastal anglers most often run their engines. They also deliver slightly better fuel economy at mid-range rpm. Oftentimes, a poor-handling boat will improve by switching to a 4-blade propeller, and more often than not, a 4-blade will run smoother with better balance than the 3-blade equivalent.

A 4-blade propeller will usually have a smaller diameter for the same pitch size of the 3-blade equivalent. This is one reason they spin up quickly and yield good acceleration. The blades are often a bit smaller but offer more total blade area because of the additional blade, so they have more grip on the water. When switching from a 3-blade prop to a 4-blade, you’ll usually need to decrease the pitch by 1 or 2 inches to keep the engine RPM in the same range.

Propeller Size

Propellers are sized and described by their diameter and pitch. A propeller listed as a 15 ? x 17 x 3 would indicate a 17 inch pitch, 3 blade propeller having a diameter of 15 ? inches. Pitch is the theoretical distance that the boat will move forward with each revolution of the prop shaft, minus the slippage. The pitch ultimately is responsible for the top speed of the boat, much like the main jet in a carburetor is responsible for the ultimate power and speed of an engine.

The pitch must be matched to the engine’s recommended rpm range for full throttle. For most engines, this top range is about 500 to1000 rpm (typically 5,000-5,500 for 2-strokes, 5,000-6,000 for 4-strokes). A light boat and load will pull a high numerical pitch prop, whereas a heavy boat and load would have to run a smaller numerical pitch to load the engine less and allow the engine to reach recommended full throttle rpm. Keep in mind that most propeller manufacturers design their pitch in a progressive manner, to the point that the actual pitch will vary across the blade surface. Also, keep in mind that different propeller manufacturers each measure their pitch in slightly different ways with different tolerances. This means that two propellers of the same diameter and pitch from two different companies can yield different performance data.

For anglers slow-trolling for species like rockfish and flounder, a propeller with lower pitch (less distance per turn) that still allows the engine to rev to the top of its range will offer lower trolling speeds. It will also push loads easier and make maneuvering around a dock easier. On the other hand, a prop with more pitch that lets the engine turn to the lower end of its range may yield higher top speed.

Hooking-Up with the Water

There are other dynamics that come into play as the boat accelerates to its top speed. When it’s sitting still in the water and the skipper advances the throttle(s), the diameter and surface area of the prop develop the initial static thrust and launch the boat. As the hull gains momentum and speed, the dynamic thrust now is largely influenced by the prop’s ability to connect itself to the water and hook-up without cavitating or ventilating.

Cavitation is loss of hook-up due to the water literally boiling, caused by extreme low pressure near or at the blade surface or blade edge. Ventilation is a loss of hook-up due to the introduction of air or exhaust gases around the propeller. Basic blade design and diameter can affect these problems. If the diameter is too small for instance, it can cause cavitation. If the engine is mounted too high, it can cause ventilation. Both of these phenomena can be minimized by installing the correct prop. Going to a larger diameter or switching to a 4-blade can sometimes accomplish better hook-up. Larger diameter propellers usually yield better maneuverability as they push a larger volume of water on initial rotation, especially at slow speed. They also grab more water for better control when reversing. Matching the diameter and pitch for a given load and application gives the best performance for a specific boat.

Another design concept, called cupping, can also come into play here. Cupping means curling the trailing edge of the blade slightly to better grab water as it comes off of the blade face. This facilitates hook-up, but it can also load the engine more, much as adding pitch does. Different series of props have different amounts of cup in them. It is not uncommon today to have props with cupping added to the tip area of the blade to minimize tip losses and maximize efficiency.

Vented props are available with an exhaust relief hole at the base of each blade. These holes can range from ? inch to approximately 3/8 inches in diameter. They allow exhaust gases to escape around the propeller as it begins to spin up on acceleration. The engine gains rpm more quickly and reaches its ideal power curve sooner to improve overall acceleration. These props, however, do not work well for fishermen who do a lot of slow trolling, as the boat never gains enough speed to leave the ventilated water, causing the prop to catch-and-release, making the boat surge. Vented props also do not work well with cat hulls.

Matching style, blade design, pitch, and diameter is just as important for boat handling and safety as for maximizing cruising speed and fuel efficiencies. Large diameter props with lots of surface area help a boat climb a big wave and allow the operator to maintain good control in offshore conditions with rough water. Again, good-hook up is essential without overloading the engine and prop to the point of causing cavitation.


If you can find a prop that seems to feel good and run with confidence, don’t be discouraged if it’s off by a little bit in ideal engine rpm. Any competent prop shop can fine-tune and tweak a good prop to make it perfect for your application. Adding or removing pitch up to 1 inch is not uncommon. Adding or removing cupping is also a standard adjustment. It is nearly impossible to find the right prop without going through a dedicated session of trial and error. With so many styles, designs and options in the market today, there is much to be gained by simply trying as many props as you can. It is important to do any comparative analysis between props in the exact same water conditions as each other, so that you can actually come away with usable data.

Each of us has unique desires and requirements for our propeller choices. They should always be matched to a particular hull, load and usage. My personal desire is to find a prop that I consider to be well balanced. By that, I mean one that handles well, yields average mid-range and top speeds, with no quirkiness or negative traits. I am always willing to sacrifice top speed to achieve good all-round performance, as I run wide open no more than 10% of the time, due to water conditions, comfort level and passenger security.

Technical Bulletin: Lowrance and Simrad BSM-1 with B744V Transducer

Attention Navico Customer,

Attached, please find our latest Technical Bulletin with details on the Lowrance and Simrad BSM-1 and Airmar B744 Transducer.

For more information, please call or email using the information below!

Technical Bulletin: Lowrance Elite-7 HDI Version 2 Software Update

Support for Simrad IS40 and B&G Triton HV Displays

Navico is pleased to announce the latest version of software for Navico SWUP Software Upgrade utility. This new version now incorporates support for the latest Simrad IS40 updates, B&G Triton displays and other products that will be released in coming months.

Click Here  for the software update…

For more information, please call or email using the information below!

*Please use the email address that reflects your sales-group classification.