Ocean Navigator runs a nice review of several systems currently available for accessing the internet while at sea. Although they miss important (future) players like Boeing's Connexion and Sea Tel's WaveCall, it's still worth reading. As an 'extra', the article shortly discusses another very interesting development, marina hotspots using Wi-Fi technology.
"Of course, some technically savvy boaters may engage in a new kind of trolling, sailing along close to shore while using their computers to look for existing and unencrypted hotspots through which to connect to the �Net. We hope their navigation skills match their computer skills, however; otherwise, we may see shoals decorated with grounded boats."
Charging these batteries will possibly require a genset. Choosing and installing one for a relatively small ship should be a careful process.
"The time had come to replace the Mase 8.0 genset that had served well for more than 12 years. As in the past when the Mase 8.0 was selected, the priorities were to find a unit that would fit in the available space, ensure that it would be at least as quiet as the Mase had been, and select a unit that would produce an adequate amount of electrical energy. The priority order reflects prior experience. Regardless of what else a genset may be able to do, if it is not quiet, it does not belong on the boat."
Although printing-on-demand is not necessarly a good distribution model (compare printed newspapers), the market for printing electronic charts might be a very interesting one. Especially as long as sailors will want to use (updated) paper charts, something that is still required for professionals.
"Even though electronic charts have become widely used by mariners, it still makes sense to have paper charts aboard, should electronic systems experience problems. And the idea of getting a corrected chart printed for you on the spot is compelling. If the program continues to do well, POD charts may well prove beneficial to recreational mariners by providing them with an up-to-date paper chart with a minimum of fuss."
In order for all gadgets and electrical necessities on board to have access to sufficient power resources, batteries are crucial. Ocean Navigator's January/February 2004 issues has a lengthy article on this topic.
"For the purposes of the average voyager, the quest for reliable, powerful and affordable deep-cycle house and start batteries takes precedence over all other battery interests. Even this considerably narrower category presents a dizzying prospect for the would-be battery purchaser. Available configurations run the gamut from flooded to gel and absorbed glass mat (AGM), from 6-volt traction to dedicated 12-volt marine. How is a cruiser to know what is appropriate for his or her needs?"
When planning to sail around the world, or even just a part of it, it is important to consider different international power requirements, especially since many yachts are fully loaded with all kinds of electronics.
"More of today's cruising boats provide all the comforts of home, and with luxury comes an increased demand for AC power, or alternating current. It seems like every galley now has a microwave oven; television sets with a VCR or DVD player are common. And how about a laptop computer or electric hair dryer? Or a central air-conditioning system? In no small degree, AC power on board has become a way of life for many cruisers."
In case you're chartering a boat in the carribean and have a specific need for certain electronic aids, have a look at a company called Renport which allows you to rent all you need.
"Whether you wish to stay in touch with friends, family or your office by sending and receiving e-mail; check the latest weather reports; plan your itinerary with electronic charts; watch a movie with dinner; play games; listen to your favorite music; have a blended mix drink and enjoy the sunset, we have a package just for you!"
The entrance of Bluetooth in the marine electronics industry has just begun, but here's a nice example of what can be done. It's a bit expensive though..
"Here's a unique high-end marine keyboard, and it uses the Bluetooth wireless protocol mentioned in my column. Its tough composite construction is supposedly good for a million key clicks, and the unit is submersible to 60 feet."
PDA's are becoming a very useful tool for sailors, primarily for navigation purposes. With advancements is battery life, wireless connectivity and software stability, the future for device devices in a yachting context looks very bright.
"Thus the pieces came together for PDA plotting, and in 2001 Maptech introduced Pocket Navigator, the program I've been running on an iPaq equipped with a Navman GPS sleeve. It's a slick package. Before a trip, I boot up the software's PC module and select the raster charts and topos I want, build routes if needed, and download everything to the handheld's memory card. Once I'm outdoors or have the iPaq mounted to my boat or car windshield, the GPS acquires position, and the magic begins. Friends looking over my shoulder, particularly ones familiar with regular plotters and/or PC charting, are invariably astounded at how sharp the charts look, how fast they zoom using the control keys, and how smoothly they pan when dragged with a stylus pen or one's fingertip."
"The MPC-D single-lever unit features a distinctive built-in LCD, which can display engine data like shaft rpm and also controls its own functions like trolling valve, slow-speed and warm-up modes, synchronization, and proportional throttle boost."
"With the NightStar Flashlight, a mere 30 seconds of gentle shaking (internal magnet through coil) pushes enough juice into its capacitor to produce ten to 15 minutes of light that can be seen a mile away and illuminate a five-foot-diameter circle at 50 feet.."
When planning to sail around the world, or even just a part of it, it is important to 
"Here's a unique high-end 
"The MPC-D single-lever unit 
"With the