Once you have the boat you’ve always wanted, the next exciting thing to do is to outfit it with electronics that will keep you boating safely, finding the fish, and navigating to where you want to go.

For the mariner, they can serve as the main navigation computer or be a viable backup to permanently installed onboard gear. Accurate position, speed, and course information supplied by a handheld GPS used in conjunction with a paper chart should be all you need to complete any voyage. When they are so equipped, many of the handheld marine GPS review units we tested are also good at supplying accurate lunar, solar, and tidal data in user-friendly format. Some of this type of information can be critical to a new navigator or novice boater arriving in an unfamiliar port or marina. One thing these units don’t do very well is display easy to read charts like you’d find on a large screen fixed-mount chartplotter. Early handhelds were especially lacking here for two reasons.

First, screen size on a handheld is simply not large enough to display the huge volume of data needed to make a map display useful and accurate. Increasing screen sizes on recently released handhelds have help here.
Second, memory and processor capability was very limited in the earliest mapping handhelds. Newer handhelds have made significant strides in the hardware arena with big increases in computing power and lots more memory.

The units we’ll review here have prices ranging from under $100 up to near the approximate $400 starting price of a fixed mount chartplotter.
Boaters looking to meet basic navigation needs without buying a fixed mount chartplotter should check out a handheld GPS unit. They cost significantly less money.

People can often see the logo which reminds us taking care of the olds, children and disabled in the street. In fact, they really need human being’s special care and love for their weakness.
Then how to protect the security of the olds, children and disabled has been the hot topic today. Now, Sophia, the director of the largest electronic wholesaler ePathChina.com (http://www.epathchina.com/) at a news conference which just concludes claimed that they have released a series of spy devices can make people at ease called GPS Tracker. It can help people put their worry down as long as some one wears it on the body and now it has published serial watch design GPS trackers.
These GPS trackers (http://www.epathchina.com/spy-devices-gps-tracker-c-192_326.html) are especially for children and elders. It includes a lot of great advantages following:
Working based on GSM/GPRS network and GPS satellites product can. You can locate and monitor any remote targets by SMS or GPRS and check position by Google earth. Auto Report position. Send the last location if it enters into the blind area. It will send an alert of Geophone to the user when it breaches the restricted area. It will send an alert of movement to the user when it begins to move. It will send an over speed alert to the user when the target moves exceed of the restricted speed. It will send a low battery alert to the user if the battery is low. Add or change Username and Password. Monitoring and SOS feature. Protect child / the old / the disabled Track criminals …

Many marine electronics feature multifunction systems that already include GPS, such as GPS/fish finder combos and GPS/chart plotter combos.  Getting a handheld GPS for your boat might seem redundant if you already have a GPS/chart plotter combo or a stationary GPS but consider the benefits.
Unlike chartplotters or standard GPS receivers, portable units are a lot less expensive. Handheld GPS units are just as reliable and accurate as your other options so low price becomes a major benefit.
Portability is quite possibly the second most obvious benefit of handheld GPS. If you want to be able to use your GPS both on and off the boat, say in a car or while hiking, then you need a handheld unit.
On the other hand, small size has a major drawback – small screen and small buttons. In rougher weather conditions hitting just the right keys or making out waypoints might become difficult.
Another drawback of portability is that it implies having to rely on batteries to operate your handheld GPS. In addition to monitoring battery charge levels in your handheld and keeping replacement batteries handy, make sure to select a model that can run on external power as well as on batteries.
Even if you already have a GPS system in place, you might find a handheld unit helpful. For example, if you use a computer connected to a GPS receiver, you already know that you won’t be able to see much on your computer screen unless it’s below deck or otherwise shaded. By choosing a handheld GPS with a screen that can be read in …

With so many options for discounted multifunction marine electronics, how do you decide which system is right for you? Here are a few pointers about features to look for in basic models and what additional features you can expect in more expensive marine GPS electronics.
Select the Type of GPS You Want
When it comes to marine GPS, you can choose between a handheld unit, a combo GPS/chart plotter or a standard GPS receiver that will be hooked to your computer. Each has its own advantages and drawbacks.
If you are looking for an accurate, but inexpensive GPS unit that can be used on and off the boat, then consider a handheld GPS with basic features. On-board marine electronics often include GPS receivers as an integrated package. You can find combo GPS fish finders, chart plotters, radars and other marine GPS combos.
Think of the Environment
In this case, the environment you and your GPS will be in. On the open water you are exposed to very bright sun, making it hard to read all but the brightest displays. Even on calm days you may experience choppy waters that will interfere with your balance. At times like this a handheld GPS with a small screen may be hard to read. What’s more, their small controls will be hard to manipulate when you are struggling to maintain your balance. If you do a lot of sailing on rough water, then consider a GPS or GPS combo that has a large display and large control knobs for easy navigation on bobbing waves.
If you have a small boat, …