Please select your home edition
Edition
Pantaenius EU 728x90

Electromagnetic Fields

by Jeff Cote on 14 Mar
Ferrite Jeff Cote
Electromagnetic Forces ( EMF ) are one of the four fundamental forces in nature, and although they exist naturally, they can also be created. Any wire carrying any amount of electrical current will generate a magnetic field, and any charged conductor will create an electrical field; these two phenomena were once viewed as separate forces, but are now understood to be parts of the larger force described as electromagnetic force. The strength of the magnetic field is proportional to the current passing through the conductor, and the strength of the electrical field is proportional to the voltage potential.

Some devices will have coils of wire, and many will have a permanent magnet or an intentional or situational electromagnet built into their design. In either instance a strong electromagnetic field will be generated. This magnetic field will affect other electrical devices within the sphere of influence of the EMF, and depending on the strength and frequency of the EMF the consequences can be adverse to the point of interference.

Most sensitive electronic devices will provide the appropriate guidelines for installation of the device to be free from the effects of EMF interference from other equipment, but these guidelines maybe difficult to maintain in the confined spaces that are found on many mid-sized boats. In some cases a degree of separation maybe required to avoid interference, and in other cases it may require the installation of a ferrite block to absorb EMF on a line to mitigate adverse effects.

In all cases the degree of interference will only become apparent after the devices are placed and become operational. So, whenever possible, pay strict attention to installation guidelines concerning electrical equipment, maintaining wide separation between components, especially those pieces of equipment that are known to be affected by EMF.

This article has been provided courtesy of the Bluewater Cruising Association.
Barz Optics - Kids rangeZhik Dinghy 660x82Naiad/Oracle Supplier

Related Articles

Operation V-Berth
Last year, our winter project was to upgrade our electrical system. This year we decided to insulate the V-berth The last festive season we were so lucky to have an opportunity to house sit: central heating, washer and dryer, and a full kitchen. As a live aboard, these are huge luxuries in life! Of course, when we’re not living on the boat is the perfect time to do work on the boat. Last year, our winter project was to upgrade our electrical system. This year we decided to insulate the V-berth.
Posted on 25 Mar
Crew released from Merchant Vessel hijacked off Somali since 2012
On March 16 2017 the crew of the MT ARIS 13, a tanker vessel, was released from Somali pirate hands On March 16 2017 the crew of the MT ARIS 13, a tanker vessel, was released from Somali pirate hands due to the efforts of the Puntland Maritime Police Force (PMPF). The entire crew is reported unharmed. Under the care of the PMPF, the MT ARIS 13 is now proceeding to the Somali port city of Bosasso. On 13 March, pirates hijacked the vessel en route to Mogadishu from Djibouti.
Posted on 25 Mar
Port Townsend to New Zealand - Small boat big seas
Did you ever wonder what it might be like to sail across the Pacific (North and South) in a 24 foot sailboat? Did you ever wonder what it might be like to sail across the Pacific (North and South) in a 24 foot sailboat? Well, if you had attended the BCA Calgary Chapter February Club Night last week, you would have found out. Karen Sullivan and Jim Heumann provided us with an evening of insight and humour with the presentation of their voyage from Port Townsend, Washington to New Zealand and back again.
Posted on 25 Mar
Coast Guard joins Arctic stakeholders in historic forum
U.S. Coast Guard Commandant Adm. Paul Zukunft joined leaders representing eight coast guards of Arctic nations U.S. Coast Guard Commandant Adm. Paul Zukunft joined leaders representing eight coast guards of Arctic nations in signing a joint statement Friday. The statement adopts doctrine, tactics, procedures and information-sharing protocols for emergency maritime response and combined operations in the Arctic. The Arctic Coast Guard Forum is an operationally-focused, consensus-based organisation...
Posted on 24 Mar
Docking strategies – How to build your docking skills with Rick Ellis
You will grow new skills and turn your boat handling and communication from stress to success. Do you find some docking conditions challenging? Whether you are a single-handed sailor, an inexperienced crew or a confident helmsman, you will grow new skills and turn your boat handling and communication from stress to success. Instructor Rick Ellis, who also delivers BCA’s very popular Psychology of Voyaging workshops, lends his years of boating experience...
Posted on 24 Mar
X-Yachts advisory board announces ambitious strategy plan
X-Yachts now has three unique and different ranges. All three lines will be further developed and refined. Catering for a complete cross section of sailors prioritising Superb Sailing Pleasure, X-Yachts now has three unique and different ranges. All three lines will be further developed and refined.
Posted on 24 Mar
Three days of festivities in Lorient for the Race for Water Odyssey
Three days of festivities are planned in La Base, Lorient, to celebrate the start of the five-year expedition. To mark the occasion, Race for Water will welcome the general public on board on Saturday April 8, with 45-minute guided tours.
Posted on 23 Mar
Choosing for offshore cruising at the Bluewater Weekend
The ARC Bluewater Weekend is a truly unique combination of all three and more still. More than just a boat show, more than a seminar, and more than simply a cruiser rendezvous; the ARC Bluewater Weekend is a truly unique combination of all three and more still. Designed to encourage visitors think about all aspects of living their bluewater dream, the Bluewater Weekend is a chance to view a wide range of offshore cruising boats to suit all budgets, and meet experts...
Posted on 23 Mar
Dig under way for Matthew Flinders in old London cemetery
London has a long history of digging up burial grounds to lay rail lines. Sometimes it has done so with respect London has a long history of digging up burial grounds to lay rail lines. Sometimes it has done so with respect, but other times it has left behind – in the gruesome words of famous English author Thomas Hardy - 'human jam'. One body that may be disturbed in the name of progress is recognisable to every Australian – explorer Matthew Flinders, the first person to circumnavigate, Great Southern Land
Posted on 23 Mar
Coast Guard to host leaders from eight Arctic nations in Boston
The Arctic Coast Guard Forum is a consensus based organization with the purpose of leveraging collective resources The U.S. Coast Guard will host an eight-nation Arctic Coast Guard Forum Principals Meeting March 22-24 at the U.S. Coast Guard Base Boston in Boston. The Arctic Coast Guard Forum is an operationally-focused, consensus based organization with the purpose of leveraging collective resources to progressively foster safe, secure and environmentally-responsible maritime activity in the Arctic.
Posted on 22 Mar