Monday 26 September 2011

Yacht Delivery Made Safer By GPS Technology

By Alexander Hunt


Yacht delivery has been simplified by GPS technology. The Global Positioning System has allowed specialized tracking devices to be developed that allow continuous monitoring of vessel position. These allow shore based personnel to quickly determine the location of the vessel if an emergency or some other need arises.

In one way, marine tracking is easier at sea than it is on land. There are no tall trees, natural (or urban) canyons or gorges to block signals from GPS satellites. On the other hand, systems required to track vessels across oceans cannot rely on the mobile telephone networks since there are no cell-towers out in the ocean.

Some of the tracking devices operate on power from the electrical system of the vessel. Others operate from a battery power supply (4 standard AA size lithium batteries) that will operate for one to two months, based on the device communicating its position 12 times per day. Battery life can be extended by reducing the number of transmissions. For example, battery life can be prolonged to one year if tracking transmissions are reduced to one a day.

Some units allow additional batteries (2 x 2 AA batteries) to be installed in parallel allowing over 3 years of continuous operation. Some also have a smart sensor ability that will cease scheduled transmission to conserve battery power after a set period if the vessel has not moved.

The transceiver is the only physical component that needs to be installed on the vessel. Its dimensions are small, about 3 cms high, 10 cms wide and 15 cms long. The transceiver contains a GPS transmitter and software to allow bi-directional communications with the INMARSAT satellite constellation.

Some systems allow owner-defined security alerts to be set-up and transmitted in real time to the owner via email and mobile phone. For example, the owner can define a geofence around a control area within which the yacht is expected to operate. If the yacht is reported outside that area, an automatic message is sent to the vessel owner.

In summary, the risks arising during yacht delivery can be managed more effectively if the vessel is equipped with a GPS tracking device. These units are a logical and clever extension of well-known GPS technology. Many yacht owners have already installed these systems and, after delivery, use them during coastal and ocean passages.




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