Em-trak ais review?

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EM-Trak’s AIS is a tool that gives boaters the ability to see and be seen on the water. It is a great way to improve safety and situational awareness.

We haven’t done a comprehensive review of em-trak’s AIS products, so we can’t really speak to their quality. However, we have heard good things about their AIS transponders in particular.

How much is AIS?

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AIS is a type of Automatic Identification System which is used by commercial vessels. This system helps in the identification of the vessel as well as its location. AIS transponder is mandatory on all ships of 300 gross tonnage and upwards engaged on international voyages, cargo ships of 500 gross tonnage and upwards not engaged on international voyages and passenger ships irrespective of size.

What does an AIS transceiver do

AIS is a great way for boaters to stay aware of other vessels in their vicinity, and can be especially useful in crowded areas or when visibility is limited. However, it’s important to remember that AIS is not a substitute for good old-fashioned visual lookout!

Class B AIS Transponders are mainly used by recreational vessels and smaller commercial vessels. Information transmitted by Class B transponders can be “seen” by all AIS receiving equipment. Class B transponders also receive all Class A and Class B AIS transmissions.

Are AIS reliable?

AIS is very reliable as it transmits the GPS location including SOG and COG. AIS also transmits a boats’ specific MMSI number and the vessels name allowing personal contact by Digital Selective Calling (DSC), avoiding vague descriptions (eg “ship off my port bow”).

AIS is more accurate than radar since it is continuously fed with data from reliable sensors. Radar can have very poor accuracy when tracking a target. AIS maintains its accuracy and gives a prompt indication of changes in heading, and will give the rate of turn if it is available from the target.em-trak ais review_1

What are the main limitations of AIS?

The limitations of the Automatic Identification System (AIS) are that the position received on the AIS display might not be referenced to the World Geodetic System 1984 (WGS 84) datum, over-reliance on the AIS can cause complacency on the part of the officer in charge of the watch (OOW), and users must be aware that the AIS might transmit erroneous information from another ship. Not all ships are fitted with AIS.

AIS information is free and no subscription is required! All you need to take full advantage of AIS is a VHF or AIS antenna and AIS receiver (and/or transceiver), plus a compatible chartplotter or smartphone/tablet.

Can ships turn off AIS

If a ship’s crew turns off its AIS broadcast, it may be doing so to conceal illegal activities. This is because the AIS broadcast can be used to track a vessel’s location and identify it. By turning off the AIS broadcast, the vessel can avoid being detected and apprehended.

The Automatic Identification System (AIS) is used by most commercial and military ships to show their locations for safety purposes. However, several warships have had their locations “spoofed” by hackers, causing them to appear in provocative locations, particularly in Russian waters. This could create a serious safety hazard, as well as a potential diplomatic incident. The ship’s owners and operators should be aware of this vulnerability and take steps to protect their vessels.

What are the 2 types of AIS?

AIS Class A:
Type of AIS used on ships that are required, by regulation, to be fitted with AIS.
AIS Class A transponders are quite large devices that are usually integrated with other equipment on the vessel such as the VHF transceiver, GPS, bridge control systems, and ECDIS.

AIS Class B:
Type of AIS used on voluntarily fitted ships.
AIS Class B transponders are smaller than Class A devices and are stand-alone units that are powered by the vessel’s 12 V DC power supply.

AIS Base Stations:
AIS Base Stations are used to collect and store AIS data from ships in a particular area.
The data collected can be used for a variety of purposes such as monitoring vessel traffic, conducting search and rescue operations, and environmental protection.

AIS AtoN:
AIS AtoN are devices that are used to transmit AIS signals from buoys, lighthouses, and other navigational aids.
The purpose of AIS AtoN is to provide vessel traffic information to nearby ships.

AIS-S

All commercial vessels of 65 feet or more in length are required to install and use a Class A AIS transponder, with the exception of those defined below. Towing vessels of 26 feet or more in length and more than 600 horsepower must also install and use a Class A AIS transponder. Vessels certificated to carry more than 150 passengers are also required to install and use a Class A AIS transponder.

Does AIS require a special antenna

You can transmit AIS signals with a VHF antenna, but you will need a dedicated AIS antenna to receive AIS signals. If you only have one antenna on the boat, make sure it’s a VHF antenna to ensure the best possible communication.

The main difference between Class A and Class B units is the power output. Class B transmits at 2W, giving a range of between 8-10 miles, whilst Class A transmits at 125W giving a much larger range. This makes Class A units much more powerful and therefore able to communicate over longer distances. Class B units are often used in low power applications where range is not as important, such as in most homes and small businesses.

What are the 3 classes of AIS units?

Class A equipment
-transmits more information
-transmits information more frequently
-transmits at higher power

Class B equipment
-transmits less information
-transmits information less frequently
-transmits at lower power

Receive only equipment
-cannot transmit information
-can receive information from both Class A and Class B equipment

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Final Words

We really like the EM-Trak AIS products

The quality of the hardware and software is very good

The products are well suited to our needs

We have no hesitation in recommending them

After doing some research online, it seems that the Em-Trak AIS is a good product overall. There are some complaints about the customer service, but mostly people seem happy with the product. It is a little pricey, but it seems like it is worth the investment.

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