Snap Track
Posted in Uncategorized on 04/06/2006 04:00 pm by admin
Snap Track
 |
 HTC Amaze 4G Ruby T Mobile Hard Case Snap On Silver Cover Pink Star Track Bling  US $9.95
|
 Atlas HO Snap Track Insulating Plastic Rail Joiners 24 Pack 55 US $4.99
|
How Tracking Ship Movements With Ais Works
Automatic Identification Systems are in use around the world, though unless you're a sailor you'll probably never have heard of them.
Even so, tracking ship movements with AIS has made the seas and oceans a safer place for everyone. The technology has made it possible to save hundreds of lives in maritime disasters, helped to keep busy ship lanes accident free and revolutionised maritime insurance and accident investigation.
Basically, AIS is a short range system where vessels and coastal tracking services can identify and locate nearby ships using data transmitted by a VHF transceiver. Navigational data from GPS systems, gyro-compasses or other such tools is integrated with a unique ship ID, making it possible for ships to see who else is in their vicinity and what direction they're going.
Currently AIS transponders have a horizontal range of about 74 kilometres, though this can differ considerably depending on conditions. This means that generally, tracking is conducted by coastal systems or from fixed platforms at sea. Global tracking systems make the best of this by using the most up-to-date navigation information to estimate a ships heading and ETA, correcting the estimate as a vessel appears on other AIS receivers.
However, this could soon change; AIS transponders have a vertical reach that extends as far as the International Space Station's 400km orbit. In 2009, the space-shuttle Atlantis attached two experimental AIS antenna's to the ISS; starting in May 2010, the European Space Agency will be testing a satellite-based, real-time monitoring service for ship movements.
Thanks to an international convention (specifically, SOLAS: the International Convention for the Safety Of Life At Sea) an AIS system is required on board a lot of the ships that regularly undertake international voyages. Every passenger ship has to have one fitted, as is any cargo ship that has a gross tonnage of 300 or more.
However, AIS is so useful that many ships that are smaller than the requirements also choose to have it fitted.
Tracking ship movements with AIS is most often used in collision avoidance; AIS responders are often placed in navigational buoys or on-shore bases to transmit warnings around navigational hazards. Also larger ships - who must be much more careful when navigating - can clearly broadcast their planned movements and smaller vessels can navigate around them by integrating the data with a electronic map or display. Busy harbours and shipping lanes also use AIS to track the amount of traffic in the area and to co-ordinate it as best they can.
One of the most important applications of AIS technology has been in the field of Search & Rescue operations. As you might imagine, knowing the position of a vessel in distress is fairly useful.
Even if the ship in distress doesn't have its own AIS system, knowing the navigational status and location of any ships in the area can be hugely significant - literally a matter of life and death. Any captain worth his license will offer to help out a ship in distress and identifying whose in the best position to help means rescue services can move quickly and effectively.
Finally, a more prosaic use of the technology can be found in cargo haul logistics and maritime insurance. Firstly, multinational companies can track a cargo vessels progress via AIS systems, ensuring that they know the ETA of goods and make arrangements accordingly. Secondly, if a ship goes down, then AIS data can be invaluable in substantiating or debunking an insurance claim. It can provide a snap-shot of the GPS position, the compass heading, the speed and the rate of turn of any vessel involved in a collision.
Perhaps the only area where AIS hasn't been used to its full extent is in automated collision avoidance. Strangely, people worry about leaving such things to a complicated radio...
About the Author
Lewis Grundon is a freelance writer. He writes articles on various topic. He recommends you to visit http://www.lrfairplay.com/ for tracking ship movements.
|
|
Snap! $14.99 Track Listing: 1. Downsize Blues, 2. Angelo's, 3. Razzle-Dazzle, 4. She's Available, 5. When the Sumac Is on Fire, 6. Cave In, The, 7. What Would Brando Do?, 8. Chicago (Cast Off Alone), 9. Carry Me Away, 10. Cure For Your Blues |
|
|
Neon Snap Track - 352 Pieces $30.95 Create a winding roadway or a figure 8 racetrack with this exciting new flexible track that snaps together in an infinite variety of configurations! Requires 2 AA batteries not included. Ages 4 years and up. |
|
|
Perri's Custom 1 Track Halter with Snap Throat $53.95 The Perri's Custom 1" Track Halter with Snap Throat is typical of the halters that are used at the racetrack. A custom name plate comes with this halter so it will be uniquely yours The Perri's Custom 1" Track Halter with Snap Throat features: 1" leather Snap throat Double buckle crown Fixed Chin Custom matching name plate Amish Made This halter will be made especially for you. Please allow two weeks for delivery. As this is a custom item it can not be returned. |
|
|
Perri's Leather Collection Premium Track Style with Snap Leather Show Halter $68.95 Perri's Leather Collection Premium Track Style with Snap Leather Show Halter - Quality Amish-made 1 in. leather halter. Triple stitched leather with a double buckle crown comes with a fixed nose and snap at throat. Similar to our traditional track style halter but some prefer the snap for easier on/off the horse. |
|
|
Perris Leather Collection Premium Track Style with Snap Leather Show Halter $72.95 Perris Leather Collection Premium Track Style with Snap Leather Show Halter - Quality, Amish-made 1 in. leather halter. Triple stitched leather with a double buckle crown comes with a fixed nose and snap at throat. Similar to our traditional track style halter but some prefer the snap for easier on/off the horse. |
|
|
Perri's Leather Collection Track Style Leather Turnout Halter with Snap at Throat $46.95 Perri's Leather Collection Track Style Leather Turnout Halter with Snap at Throat - 1 in. turnout halter with double buckle crown fixed chin and snap at throat. A great turnout halter. Amish-made. |
|
|
Perris Leather Collection Track Style Leather Turnout Halter with Snap at Throat $52.95 Perris Leather Collection Track Style Leather Turnout Halter with Snap at Throat - 1 in. turnout halter with double buckle crown, fixed chin and snap at throat. A great turnout halter. Amish-made. |
|
|
K-Line Train O Super Snap Curve Track - 120 Inches $5.79 This easy super snap track will allow you to increase the size of your layout. No worries because it can be used with other O Gauge Tubular Track. Type: Trains Gender: Male Age: Child |
|
|
K-Line Train O 1/2 Curve Snap Track - 31 Inches $3.49 This easy Super Snap Track will allow you to increase the size of your layout. No worries because it can be used with other O Gauge Tubular Track. Type: Trains Gender: Male Age: Child |
|
|
Perris Custom 1" Track Show Halter with Snap Throat $73.95 The Perris Custom 1" Premium Track Show Halter with Snap Throat is popular on the racetrack. This halter is similar to the Track Show Halter, but with a snap throat for easy on/off. A custom name plate comes with this halter so it will be uniquely yours |
|
|
Perris Custom 1" Track Halter with Snap Throat $53.95 The Perris Custom 1" Track Halter with Snap Throat is typical of the halters that are used at the racetrack. A custom name plate comes with this halter so it will be uniquely yours |
|
|
Perri's Leather 1 Track w/Snap Chrome Hardware $50.95 Perri's Leather 1" Track w/Snap Chrome Hardware -Quality Amish-made 1" leather halter. Triple stitched leather with a double buckle crown comes with a fixed nose and snap at throat. Similar to our traditional track style halter but some prefer the snap for easier on/off the horse. All hardware is chrome. This is a fashionable and functional halter. |
|
|
Perris Leather 1" Track w/Snap Chrome Hardware $54.95 Perris Leather 1" Track w/Snap Chrome Hardware -Quality, Amish-made 1" leather halter. Triple stitched leather with a double buckle crown comes with a fixed nose and snap at throat. Similar to our traditional track style halter but some prefer the snap for easier on/off the horse. All hardware is chrome. This is a fashionable and functional halter. |
|
|
Snap! - Best of Snap $54.02 Disc 0:No track list available |
|
|
Box Partners KN119 13 pt Steel Track Snap Utility Knife $138.21 Rugged plastic and steel construction. Uses 13 cutting point snap blades. Automatic lock. Includes 3 KN218 snap blades. |
|
|
Box Partners KN121 8 Pt. Steel Track Snap Utility Knife $113.2 Constructed from sturdy plastic and steel. Uses 8 cutting point snap blades. Automatic lock. Includes 3 KN220 snap blades. |
|
|
Perri's Custom 1 Track Show Halter with Snap Throat $73.95 The Perri's Custom 1" Premium Track Show Halter with Snap Throat is popular on the racetrack. This halter is similar to the Track Show Halter but with a snap throat for easy on/off. A custom name plate comes with this halter so it will be uniquely yours The Perri's Custom 1" Premium Track Show Halter with Snap Throat features: 1" leather Double buckle crown Triple stitched Rolled throat with snap Solid brass hardware Fixed Chin Custom matching name plate Amish Made This halter will be made especially for you. Please allow two weeks for delivery. As this is a custom item it can not be returned. |
|
|
Perris Custom 1" Track Halter with Snap Throat-Chrome $53.95 The Perris Custom 1" Track Halter with Snap Throat-Chrome is typical of the halters that are used at the racetrack. A popular item for 4-H and Pony Club, this is a great halter at a reasonable price. A custom name plate comes with this halter so it will be uniquely yours |
|
|
Perri's Custom 1 Track Halter with Snap Throat-Chrome $53.95 The Perri's Custom 1" Track Halter with Snap Throat-Chrome is typical of the halters that are used at the racetrack. A popular item for 4-H and Pony Club this is a great halter at a reasonable price. A custom name plate comes with this halter so it will be uniquely yours The Perri's Custom 1" Track Halter with Snap Throat-Chrome features: 1" leather Snap throat Chrome over brass hardware Double buckle crown Fixed Chin Custom matching name plate Amish Made This halter will be made especially for you. Please allow two weeks for delivery. As this is a custom item it can not be returned. |
|
|
Lionel O Gauge K-Line Train Super Snap Curve Track - 31 Inch $3.49 An easy super snap track that will allow you to increase the size of your layout. It can be used with other O Gauge tubular track. Type: Trains Gender: Male Age: Child |
|
|
Lionel O Gauge K-Line Train Super Snap Curve Track - 96 Inch $4.99 K-Line's easy super snap track will allow you to increase the size of your layout. Type: Trains Gender: Male Age: Child |
|
|
K-Line Train K Shadow Super Snap 1/2 Curved Track $2.99 K-Line's Super K Track features the realistic Shadow Rail complete with multiple plastic ties and a blackened center "shadow rail" to give 3-rail track the appearance of prototypical 2-rail track. With the nearly invisible center rail, you can achieve the railroading realism that you demand for your O Gauge layout. Type: Trains Gender: Male Age: Child |
|
|
Perri's Leather Collection Track Style Leather Turnout Halter with Snap at Throat - Chrome over Brass $50.95 Perri's Leather Collection Track Style Leather Turnout Halter with Snap at Throat - Chrome over Brass - 1 in. turnout halter with double buckle crown fixed chin and snap at throat. A very popular item for 4-H and Pony Club this halter is a great quality at a very reasonable price. Amish-made. |