Anyone who owns a Nuvi GPS or Zumo (the motorcycle GPS model) should aim to check for free Garmin GPS maps.Having the latest mapping and routing is essential because each and every day there are new roads being built, new junctions appearing, business are changing addresses, and many other changes on the nation’s roads; all of which necessitate you having the latest routes and directions available.Due to the Garmin maps being physically stored on the memory of the Nuvi GPS it is possible that as soon as you buy your Nuvi and put it in your vehicle for the maps to already be out of date.
If you've purchased one of Garmin's many GPS units that offer free map updates, you will choose this map updates page, which will prompt you to download and install the Garmin Express map updater utility, if you don't already have it installed.
There’s even more need to update electronic charts than paper charts, especially as chart plotters display your position to a few metres on the chart and people sneak ever closer to obstructions, believing their charts and position to be accurate to the nearest centimetre.
But unlike paper charts, you can’t simply draw on the electronic versions. Digital charts are available in a variety of formats and with hugely varying levels of complexity and price. You can just buy a new chart each time, but this can work out to be extremely expensive, so it’s worth putting in some time to research the options which are open to you.
Updating paper charts is a simple matter of consulting the updates given in a relevant Notice to Mariners and transferring these via a trusty purple pen to the chart: David Rainsbury wrote about how to update your paper charts in PBO September 2014.
That’s all very well, but few people go to sea these days without electronic charts on board.