Having GPS (global positioning system) on board of cruise ship is a fabulous opportunity to feed curiosity about location, and speed of the ship and track cruise progress without asking crew rhetoric questions. In advance, the charts are also providing additional information about seascape, depth and surrounding landmarks and give you comprehensive clue what the name of the land merely visible at horizon, how far and how big it is. And when else can you have opportunity to see yourself in the middle of ocean with 4-mile abyss below?
I used to have my old small 10″ Toshiba Satellite as dedicated GPS unit before, on land in the car, but this was first time to have it as navigation unit for deep sea voyage. Basically, you would need any laptop with Windows on it, Garmin’s software and corresponding charts (Garmin’s BlueChart family of products, “BlueChart Americas” particularly) installed and GPS unit connected, all other job will be done by software components like MapSource and nRoute.
The GPS 18 USB is a 12 parallel channels , WAAS-enabled sensor (also it has serial configuration for RS-232 port), that includes mapping and real-time tracking software. Itself it also has strong magnet at bottom to flash mount it on any more or less flat metal surface. I also use the USB 6-foot extender cable to connect it without inconvenience of jumping over the cables. The sensor was located outside the suit on the balcony where it cannot be obstructed by walls or roof and only concern was not to brake the cable when you would like to shut sliding door of the balcony.
And this is how it looks when you sail through Bahamas area. The screen-shot was taken at night, therefore it is negative with black background:
The Garmin’s unit is not NMEA unit, it uses proprietary protocol. Also, would be great idea to use their Bluetooth device to avoid cabling, but this will be the subject of the next endeavour.
There are few other software geo-mapping systems that are not so proprietary to the charts, for example Fugawi and MacEnc for Apple systems (iPhone included) and they can use wide selection of external GPS receivers.





