One of the drawbacks of forward-looking sonar has always been that sound travels much more slowly through water than radar waves travel through air. At a sluggish 5,000 feet per second, it takes half a second for a sonar “ping” to travel out and back to an object a quarter of a mile away. So for a scanning sonar to build up even a crude picture of what's ahead can easily take several seconds.
Jotron's Automatic Identification System (AIS) SART is a search-and-rescue beacon based on AIS technology; it transmits a dedicated identity code and GPS position to produce a distinctive red cross icon on the bridge display of every AIS-equipped ship within range, marking the position of a liferaft or a vessel in distress.
Jotron was instrumental in carrying
What's the secret to piscatorial success?
Simple. Just follow the birds!
Terns and pelicans don't go fishing for fun. They do it because of their need to survive. And because they do it almost all day, every day, it stands to reason that they get pretty darn good at it.
Okay, I've never heard of a bird tackling a marlin or tuna—they're
Twin Disc challenges pod drives with a smooth, quick joystick system for shaft-drive boats.
Most likely, it was the eyebrow that got me. I was winding up a pleasant dinner with a boatbuilding friend at the recent Fort Lauderdale International Boat Show and gabbing about one of my favorite topics—the super-sophistication of
Sea-Me, the popular RTE (Radar Target Enhancer) or “active radar reflector” has been dramatically improved. The new Sea-Me Dual Band does exactly what its name suggests: it responds to both of the frequencies that are used by ships’ radars.
Until now, commercially available RTEs responded only to X-band radar transmissions. This meant
ACR Electronics has introduced what it describes as the newest generation of Personal Locator Beacons (PLBs) in the shape of the AquaLink PLB. Although less than six inches long and thus truly pocket-size, the newly approved AquaLink features an integral 66-channel GPS. Once the unit is triggered, the lat and lon provided by its GPS should guide rescuers to
Most of the time fishfinders work great on auto mode. But not always.
Fishfinders don’t just find fish; they also find the places fish are likely to be, like reefs, wrecks, and drop-offs where baitfish and predators gather. But sometimes they need a little help to do their job.
Fishfinders produce short pulses of high-frequency sound that
Onboard satcom is now cheaper than cellphone service.
Did you know that it is now cheaper to phone home from the Bahamas or the Virgin Islands through a shipboard satellite terminal than it is through a cellphone?
Verizon, for instance, charges $1.99 per minute for calls from the Caribbean to the United
Eat all the carrots you want. Your eyes still can’t match the power of thermal imaging.
We’ve all brought a flashlight up on
One foggy May morning, a few years ago, a 900-foot container ship heading westwards at 25 knots collided with a 40-foot yacht called Wahkuna, which until a few minutes before the collision,
DeLorme launched its first handheld unit less than two years ago, but has already followed up with two more.The most recent is the midrange Earthmate PN-30.
Like last year's range-topping PN40, the new model has a 32-channel GPS chipset for quick and reliable lock-on,and a dual-core processor to minimize the time it takes to redraw charts or aerial
Ever get the offshore heebie-jeebieies? I used to, back when I was running oceangoing tugs. The malady typically started with an imaginary change in engine pitch while we were underway after dark. Then a series of equally imaginary doomsday scenarios would ensue, usually featuring collisions (resulting from burnt-out running lights), oil spills (caused by pump problems), and sinkings (due to
KVH has joined the growing list of suppliers that are offering phone and Internet services through Inmarsat's new Fleet Broadband 150. With a dome that is just 13.5" in diameter and that weighs a little over 11 pounds, the Tracphone FB150 is the smallest and lightest of KVH's family of Inmarsat satellite broadband systems.
Described by the company as
Whenever and wherever we go offshore, it's a fair bet that the closest
It’s always nice to buy presents for the one you love—even if it is difficult, sometimes, to persuade your wife that the boat needs a new plotter more than she needs that designer purse.
But maybe you figure that now isn’t the best time to be spending big money on electronics upgrades. Well, the good news is that you can often significantly improve your
Apollo II HD
OceanView Technologies has added a new dual-sensor camera to its line-up of night-vision systems.
As the name suggests, the Apollo II HD is a high-definition version of the company’s popular Apollo II. Like the Apollo II, the HD combines a thermal-imaging camera with a highly sensitive low-light camera that is capable of
After conducting extensive beta-testing that included sending five terminals around the world in boats competing in the Vendee Globe single-handed sailboat race, Iridium has launched the world’s only global broadband service.
Called OpenPort, the new service provides three independent phone lines and an Internet connection at anything up to 128 kilobytes
There is growing concern that GPS performance may soon start to degrade, as the Air Force struggles to keep its constellation of aging satellites in operation.
It’s been more than 30 years since
EPIRB manufacturers around the world are urging owners to make sure their distress beacons are properly registered. The warning follows the loss of the scallop dredger
In this enviro-conscious age, everybody’s aware that the sun is a great source of free, clean energy. Which is why there are scads of handy chargers out there, from small multi-purpose versions to laptop-friendly models, that let you power your personal electronics using only solar rays. Rather not fire up the genset? Then why not embrace the end of outlet dependency?
The latest addition to Icom’s lineup of handheld VHFs is the IC-M36, a waterproof, floating radio with a couple of extra features specifically intended to minimize the effect of background noise. One is a noise-cancellation system similar to those found on headphones from Sony and Bose. A second microphone on the back of the radio picks up background noise, which
The microwaves that reheat your coffee are very much the same as those transmitted by marine radars, so it isn’t too far-fetched to believe that they could “cook” anyone who gets in their way. And we all know that some types of radiation can produce deformities in unborn children or trigger the
Ask anyone who’s ever dropped their cellphone in the drink: Water and electronics do not mix. But before you’re forced to replace yet another waterlogged gizmo, take a gander at these splash-proof personal electronics. From a wireless MP3 player that works when totally submerged to a protective pack that’ll help keep your iPhone safe, we’ve got the goods on the newest waterproof technology. Why
Long known for its navigational electronics, Garmin is now about to enter the VHF market with two fixed-mount radios. Pre-release information describes the VHF100 as an entry-level radio, but at $250, it’s definitely full-featured. It’s waterproof, has a large 3.2-inch screen and straightforward controls, and can handle NOAA weather alerts as well as the usual
Sometime in the last few years of the 20th century, a new term was added to the everyday vocabulary of ordinary Americans: GPS moved from James Bond movies to the dashboards of cars and trucks, the handlebars of motorcycles, and the backpacks of
In January, thieves ran PWCs up to a 35-foot Fountain that was docked in Fort Lauderdale, cut her lines, and quickly towed her away. Within seconds, the boat’s owner received a text message on his cellphone alerting him to the fact that the vessel was on the move and providing her exact positioning, speed, and heading. Armed with this information, he contacted
The excitement surrounding this year’s Yachts Miami Beach and Miami International Boat Show was palpable to all who walked the docks. In case you missed them, you can soak in the sights of the shows here. ▶
Thinking of a unique name for your new boat can be tough, that's why we created a Boat Name Generator.
Try it here. ▶