Summary: Living in Hawaii I was happy to see the Garman 521s had base maps for my Island. I read the book first and was surprised to find that it was mostly about the additional G2 SD card[$275.00]. Well guess what,the so called base map is useless as a chartploter. You need the SD card to make it work as advertised. So add an extra $250. to the total.
Great value and a great safety device on the boat.
5 April 2012
Summary: ALTHOUGH i HAVE YET TO INSTALL MY RECENTLY PURCHASED Garmin 521s, I bought it after watching a mate use his whilst fishing in Robe - SA It is certainly a very useful device and Garmin products are also highly valued by other friends who are professional fishers.
Summary: THE BEST GPS FISH FINDER I EVER HAD.THERE A LOT OF FACILITIES THAT HELP U TO FISH AT THE RIGHT PLACE.EASY TO USE .THE FISH FINDER RESPONSE QUICKLY IF THE BOAT MOVE WITH LOW SPEED.VERY NICE PRODUCT.
Summary: Il Garmin gpsmap 521s è molto semplice ed intuitivo da usare, preciso e utilissimo per la navigazione di qualsiasi tipologia !!! Consigliato a tutti coloro che cercano uno strumento professionale, economico e veloce da installare sulla barca !!! personalmente sono rimasto molto soddisfatto da questo acquisto. Lo scandaglio è molto preciso e funziona veramente bene. Ho aggiunto anche la mappa g2 Vision e con le funzioni 3d è veramente una soddisfazione usarlo.
Summary: I bought the S version of this. I paid a lot of money for this only to find that it has no usable map included. It advertises something called a basemap so you think that you're OK. They don't say that this map is useless. When you buy a car GPS it works without paying extra for software to make it work properly. If they sold cars the cars would come with 5 horsepower engines in them and if you want it to work properly you'd have to shell out more money.