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Radio Watchkeeping Regulations

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Regulations Requiring Monitoring and Listening to VHF Marine Radios. A charter boat whose radio was not tuned to the proper channel missed a severe storm warning. By the time the captain learned of the storm, it was too late to return to shore. The ship sank....

VHF MARINE RADIO-INTL CH. PART 2

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VHF MARINE RADIO-INTERNATIONAL CHANNELS PART 2

VHF MARINE RADIO-INTL CHANNELS

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International VHF Marine Radio Channels and Frequencies

MARINE VHF RADIO-U.S. CHANNELS

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Chart on Marine Radio VHF Channels for the US and a description of it usage.

Material Application Considerations

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The balance between material from which a part is made and the process by which it is manufactured will determine its performance characteristics. Some materials are more corrosion resistant than others depending on the environment in which they are used. The process by which a part is manufactured may determine strength and load bearing characteristics, which may be critical if safety is a primary requirement.

Fixed Mounted Marine Radio Systems

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All sea going boats of any size require some kind of device for communicating with other nearby boats and the harbor authorities in order to be safe on the water, as well as to fulfill your responsibilities to other boats in the event that they get into trouble in an emergency...

Handheld Marine VHF Radio Systems

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If you only have a small boat without a dedicated cabin that is suitable for mounting a full suite of navigation and communication equipment, or alternatively, you want a second radio for your boat, which you can always have with you in case of an emergency, then the chances are, you have thought carefully about buying a hand held marine radio. There are a huge number of different models around on the market, and all of them serve the same basic function of allowing you to communicate with people over VHF frequencies while you are at sea.

Using Furuno fish-finders to improve your catch

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Target Individual Fish with Furuno Fish Finders: The recent buzz in fish finder technology is the ability to see individual fish targets directly on screen. Statements that you can only see individual targets using new digital or high definition technology are simply incorrect. Furuno fish finders have been able to target individual fish for years!

Marine Radio Systems

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Marine radio transmits in the VHF band between 156 and 174 MHz, and broadcasts on a simplex system this means that only one path of communication is open at a time, unlike a cell phone, where you can talk with a person as you would in person. This means that whenever you communicate using a marine radio, you will need to send and receive the signal, letting the person you are speaking to know when you have finished talking by saying over and closing the channel...

Marine Radar Systems

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One of the most important pieces of kit on any sea going vessel in terms of how much safer it makes you is the marine radar system that has been installed. For any large boat, which will be sailing in areas where there are likely to be other vessels, having a radar system is pretty much essential if you want to avoid any accidents, and have a comprehensive picture of the environment around you.

Getting the most out of your Garmin GPS system

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A Garmin Global Positioning System or GPS is a fantastic device that you can use in a number of ways, and the latest models offer all the tools that you need to find out where you are anywhere in the world. From simple tracking of position through to accurately measuring your speed at sea, a GPS is a very handy tool to have with you whatever activity you are engaged in at the time...

Comparing Garmin GPS Handheld Systems

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Garmin makes a wide range of GPS systems to suit all needs, and these come in all different shapes and sizes to perform a wide range of different tasks. Although the core function of all Garmin GPS is the same, to pinpoint your location on the earth s surface by triangulating the signal from a network of satellites high in the sky above you, the actual way in which you read the data from them, and plan your journey using them varies considerably.....

Garmin GPS Maps on Micro SD Cards

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One of the best things about Garmin GPS is their absolute flexibility when it comes to navigating anywhere in the world. Thanks to an ingenious international mapping system that allows you do store the map data for whatever area you are traveling in on a standard MicroSD card, you can essentially carry charts and road maps for pretty much the entire world in your pocket with you wherever you go.

Using a Garmin GPS Handheld System

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Garmin are known for making some of the most user friendly GPS systems on the market, you still need to know a little about map reading and navigation to get the most out of your Garmin GPS. Whether you have chosen a basic system that simply gives you your geographic coordinates, or a top of the range version which actually plots your position on a digital map, it is still useful to know a little bit about how to find your way around the system in order to use it to navigate efficiently, and get to your destination as safely as possible.

Garmin GPS Systems

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One of the hardest things about navigation in open water is that there is very little in the way of land marks to tell you where you are and where you are heading. Traditional navigation requires you to take regular measurements of the angle of the sun, the time, your speed and heading, and many more factors in order to accurately gauge where you are. While this kind of navigation can be a deeply satisfying process, and provide many rewards in terms as you learn it effectively, many times when you are at sea, you simply want to get somewhere, and enjoy the ocean rather than being tied down to a map table, and this is where Garmin GPSMAP Systems come in.

A sample electrical system for sailing vessels

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With Xantrex power products, you can check your emails, listen to music, watch a DVD, and microwave food anywhere you need to be. And if you've run out of power, you don't have to start up a noisy generator that'll wake up the neighbors.

Proper Sizing of Trim Tabs

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Many factors affect the choice of properly sized trim tabs, and the ultimate responsibility for selection is up to the boat owner. These sizing recommendations are based on average performance. Your choice may vary based on power, engine configuration, weight distribution, type of boat, and use. When making a choice between trim tab sizes, remember that the largest trim tabs that will comfortably fit on the transom will be the most efficient.

How do Trim Tabs Work?

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The working of the Trim Tabs is often compared with the control surfaces present in an airplane. The movement of the boat while in the water is influenced by three axes. They are pitch, yaw and roll. The rudder or the wheel controls the yaw axis. The outdrive moves from side to side and this also plays a major role in controlling the yaw axis. Therefore trim tabs have minor effect on yaw axis. The listing and heeling condition in the boat must be eradicated. Trim tabs are effective with their presence in roll axis. The bow can be made flexible with the pitch axis.

Trim Tabs For Boats

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Trim Tabs usually consist of two independently adjustable stainless steel trim planes mounted on the transom of the boat. They provide lift in order to compensate for changes in speed, weight distribution, and water conditions. When deflected downward, the water force on the trim tab creates upward pressure, raising the stern and reducing hull resistance. The surface area of the tab, the angle of deflection and the speed of the boat all contribute to greater lift.

Why Should I Use Trim Tabs?

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The design of boats may vary from one boat to the other, but each boat has its own speed and weight distribution. It is well known that weight and speed are inversely proportional to each other. Under any circumstances the speed of the boat decreases with increase in weight. A "hill of water" is formed when a boat moves forward. Visibility decreases in this position and fuel economy goes down. In order to overcome the "hill", trim tabs are used.

More on Sinewave Power Inverters

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The use of sine wave power inverters has increased significantly in the last years. The basic principle employed in sine wave power inverters lies in the conversion of AC (alternate current) power to DC (direct current) power. This is helpful in situations where there is a need to run electrical devices boats and RVs.

What are Sinewave Power Inverters?

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Guidelines to use the appropriate inverters * When using a device that senses either peak voltage or zero crossing, it is advised to True sine wave inverters as running them on modified sine wave inverter could result in various problems. * When using sophisticated audio systems, remote measurement equipment, surveillance or telemetry equipment it is good to use True sine wave inverter. * or transformer less chargers, garage door opener, laser printers it is better to use True sine wave inverter. When, modified sine wave is used with transformer less chargers they are likely to damage it. * Modified sine wave inverter works fine with a product that operating through an AC adapter. For example, laptops, video games, cell phone and digital camera chargers.

Garmin Cartography

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Cartography is the science of map-making. At Garmin, they have one of the world's leading teams of engineers and cartographers who research and develop geographic data, and then apply it to Garmin products including GPS units and Chartplotters. They are in constant effort to provide the world with accurate maps on the road, on the trail, in the air, and in the water.

Intrinsically Safe VHF Radios

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Intrinsically safe handheld VHF radios are the new kid in town when it comes to meeting the communication needs of workers in differing hazardous conditions. Some examples are oil rig workers, first responders, and anybody else performing duties in environments with volatile gases that may produce an explosion when the gas comes in contact with a spark produced by a conventional VHF radio. The danger of using cellular phones on offshore drilling rigs led the US Mineral Management Service (MMS) to release a National Safety alert recommending the use of intrinsically safe radios.

Handheld Marine VHF Radios

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Handheld Marine VHF Radios; Your Electronic Saviors If you are a boater of any type, you need to own a VHF handheld radio. Life on the water, although mostly blissful and risk-free, can turn deadly in a flash. Weather systems originate from the water and cannot always be predicted. Meteorological history speaks clearly on this topic and continues to each passing day. It is absolutely no joke that you have to take every measure to ensure your safety in the event of inclement weather uprisings. Along with EPIRBs, GPS units, marine compasses and every other safety/survival item on your vessel, a VHF handheld radio is indispensable.

Ritchie Marine Compasses

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Ritchie Marine Compasses; Know Your Headings You should never be on the water without a Richie marine compass. Life on water takes on a whole new meaning. You don't simply need to stay afloat; you need to know where you are. There are no street signs out here. There are no lights in the darkness. With nearly every vessel having some type of global positioning system (GPS) onboard, the waters have become safer to navigate. However, when those devices fail or lose power, you need the old standby, a good compass. A Ritchie marine compass is an integral component for every water-faring vessel. Let's examine the fine features of some of the different models available.

Garmin Accessories - Mounting Brackets

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Garmin Accessories - Mounting Hardware Garmin GPS units are world renowned for quality, durability, performance, and versatility. These qualities are married within each model to produce some of the finest, if not the finest, GPS devices on the planet. Every GPS device needs a home, a way to present itself with safety, security, and convenience. Enter the world of Garmin mounting hardware. These accessories enable Garmin owners to provide stable sanctuary for their GPS models.

Garmin Accessories - Power cords

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Garmin-Accessories - GPS power cords There are vast arrays of Garmin handheld GPS units that are selling like crazy on the international market. Many are used by fishermen and others out there in the boating world. The last thing that you want to happen is for you batteries to die on you when you need them most. You're going to need a power cord to ensure the constant capacity for you Garmin GPS to guide you home or to your favorite spots. Here, we will examine the prices and availability of power cords for your favorite Garmin units.

Garmin GPS Cradles

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Garmin Handheld GPS cradles and mounting brackets Garmin is a name that you can trust. They are a consistent and enduring world leader in marine and and land GPS equipment, as well as many other product lines designed to assist the outdoor enthusiast in many versatile endeavors. They are an international company geared towards serving the aviation, marine, and consumer markets. As such, they offer a vast array of products and accessories to accommodate them. Here we will take a look at the cradles and mounting brackets designed for the Garmin line of handheld GPS units.

EPIRB: Emergency Position Indicating Radio Beacon

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EPIRB: Emergency Position Indicating Radio Beacon - The Forgotten Lifesavers When you are on the water, you come to realize your own significance. With no land in sight, no street lights to guide you, frigid temperatures all around, and nobody to help you, you realize the importance of having an EPIRB: Emergency Position Indicating Radio Beacon. It is the one thing that cares. It is the only thing that can save you if the water swells to gigantic proportions and capsizes your vessel like a small child's toy. Oceans are vast, incredibly so. When you choose to brave this vastness, you had better be prepared. That means being prepared mentally, and having the proper safety equipment, especially a working EPIRB.

EPIRB Categories

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EPIRB units are made to comply to different categories depending on wether the unit deploys automatically or manually. Read about the different categories and you will be able to distinguish them.

EPIRBS Best Practices

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Best practices and considerations for marine safety using EPRIBs

EPIRB Terminology

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Learn all the terminology related to EPIRBs.

Understanding EPIRBS

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For those that are fanatic's in marine safety the EPIRB represents the ultimate in personal safety devices. When activated, the EPIRB signal is received by a worldwide system of satellites and your distress call is relayed to the nearest rescue coordination center. With EPIRB prices starting at under $500 and the boating safety benefits so apparent, you would have to be foolish not to have an EPIRB onboard. The only remaining issue is how to select the right EPIRB for you PLB's

How to install a Battery Charger to your Boat

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When adding additional gear to your boat's DC system you may need to upgrade to a more powerful 30 amp marine battery charger. A permanently mounted marine battery charger will ensure that your battery banks are properly charged at all times. One versatile marine battery charger is the Xantrex XC3012 with multiple battery-bank charging capability. It is designed to provide longer battery life by independently controlling the charge profile for each battery bank. The Xantrex XC is the first smart charger that can charge up to 3 different battery chemistries simultaneously. This unique multiplex design means that boaters can choose the optimal battery type for each application on their boat without concern about battery damage from either under- or overcharging.

Fishfinder Technology

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GPS fishfinders combine cartography and navigational power with sonar rendering and high definition capabilities. With features including 3D map display, integrated mapping, tide data, auto picture rescaling, dual beam sonar, and much, much more, our fishfinder GPS chartplotter combos can deliver images with unprecedented clarity, notify you of your precise location over structure, and put you right on top of the fish with amazing accuracy. Choose from top manufacturers of gps fishfinders like Humminbird, Lowrance, and Garmin, all available here at JMSOnline.net. You will soon discover that our diverse selection is competitively priced to both meet the needs of your budget and your next outing on the water

GPS Navigation System

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The device you install in your craft actually communicates with a satellite network launched by the US Defense Department in 1978 called the Global Positioning System, or GPS for short. Marine GPS navigation systems, also called chartplotters, translate signals from the GPS network into visual readings on your device, allowing you to see where you are anywhere on the globe and to plot a course to any destination.

PIC_Technology

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THE BEST ANGLER HAS THREE THINGS: skill, dedication and the right tools for the job. While we can't manufacture skill or dedication, we can enable the most passionate fishermen with the right equipment to locate, entice and catch fish. All Cannon downriggers are made to withstand saltwater corrosion and backed with limited lifetime warranties. Cannon has equipped many of them with innovations that take your fish-catching potential to the next level. POSITIVE ION CONTROL: Counteract fish-repelling negative energy fields with Cannon's Positive Ion Control technology. Emits a field of positive ions to draw fish to the cannonball right where you want'em.

Cannon Downriggers

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Today's Cannon downriggers come straight from the factory built with a rugged combination of advanced electronics and durable mechanical engineering. JMS Online offers the full spectrum of cannon downrigger technology for both the freshwater and saltwater angler. Whether you are spending a quiet Georgia afternoon on the bass lake trolling with a Cannon mini-troll manual downrigger, fishing the Great Lakes for salmon and pike with a Magnum 10, or heading out from Oxnard to hunt for Halibut with a Cannon Digi-Troll IV, Mag 20 DT, or Unitroll 5, Canon has the downrigger to put your lure right where the fish are and maximum your chances of putting the fish in the boat where you are

How do Downriggers work?

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Let's face it. Fish do not go looking for fishermen trying to catch them. To be a successful angler who always brings home a catch, you sometimes have to adopt the tactics of a hunter. When fish go deep, or school around structure too far below the surface for normal rod and reel action to place a lure, a downrigger can get you where you need to go every time, at just the right depth, water temperature, and visibility level.