stupid said...
thanks all for the valuable info
seems i now just need to start hunting for a dinosaur and see if i can drag it back to the cave !
cheers
The idea is to pick up a cheap laptop, friends, thrift shops, eBay etc. $50 should be more than adequate to have a suitable 12 or 13 inch nav station plotter that out performs dedicated plotters. Buying converters may be the most expensive part.
Also consider work stations. Buy a 12v power supply for a second-hand office work station is another alternative. Just remember, the more powerful the unit the higher the consumption.
Join a navigation newsgroup such as the Seaclear one and you will have info on equipment and systems and some out of the box suggestions such as forklift touch screen computers etc.